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Difference From:

[9718f3b0] Version 2.6 (user: drh tags: trunk, release, version-2.6, date: 2018-05-04 12:56:42)

To:

[961787df] Fix 2 (harmless) compiler warnings about unused variables (user: jan.nijtmans tags: trunk, date: 2018-05-19 06:47:45)

Changes to src/db.c.

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** connection.  An error results in process abort.
*/
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;
  sqlite3 *db;

  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);




  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    db_err("[%s]: %s", zDbName, sqlite3_errmsg(db));







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** connection.  An error results in process abort.
*/
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;
  sqlite3 *db;

  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);
  if( strcmp(zDbName, g.nameOfExe)==0 ){
    sqlite3_appendvfs_init(0,0,0);
    g.zVfsName = "apndvfs";
  }
  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    db_err("[%s]: %s", zDbName, sqlite3_errmsg(db));

Changes to src/etag.c.

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** page generators that know a valid last-modified time.  This routine
** might generate a 304 Not Modified reply and exit(), never returning.
** Or, if not, it will cause a Last-Modified: header to be included in the
** reply.
*/
void etag_last_modified(sqlite3_int64 mtime){
  const char *zIfModifiedSince;
  sqlite3_int64 x, exeMtime;
  assert( iEtagMtime==0 );   /* Only call this routine once */
  assert( mtime>0 );         /* Only call with a valid mtime */
  iEtagMtime = mtime;

  /* Check to see the If-Modified-Since constraint is satisfied */
  zIfModifiedSince = P("HTTP_IF_MODIFIED_SINCE");
  if( zIfModifiedSince==0 ) return;
  x = cgi_rfc822_parsedate(zIfModifiedSince);
  if( x<=0 || x>mtime ) return;


  /* If the Fossil executable is more recent than If-Modified-Since,
  ** go ahead and regenerate the resource. */
  exeMtime = file_mtime(g.nameOfExe, ExtFILE);
  if( exeMtime>x ) return;


  /* If we reach this point, it means that the resource has not changed
  ** and that we should generate a 304 Not Modified reply */
  cgi_reset_content();
  cgi_set_status(304, "Not Modified");
  cgi_reply();
  fossil_exit(0);







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** page generators that know a valid last-modified time.  This routine
** might generate a 304 Not Modified reply and exit(), never returning.
** Or, if not, it will cause a Last-Modified: header to be included in the
** reply.
*/
void etag_last_modified(sqlite3_int64 mtime){
  const char *zIfModifiedSince;
  sqlite3_int64 x;
  assert( iEtagMtime==0 );   /* Only call this routine once */
  assert( mtime>0 );         /* Only call with a valid mtime */
  iEtagMtime = mtime;

  /* Check to see the If-Modified-Since constraint is satisfied */
  zIfModifiedSince = P("HTTP_IF_MODIFIED_SINCE");
  if( zIfModifiedSince==0 ) return;
  x = cgi_rfc822_parsedate(zIfModifiedSince);
  if( x<=0 || x>mtime ) return;

#if 0  
  /* If the Fossil executable is more recent than If-Modified-Since,
  ** go ahead and regenerate the resource. */
  if( file_mtime(g.nameOfExe, ExtFILE)>x ) return;

#endif

  /* If we reach this point, it means that the resource has not changed
  ** and that we should generate a 304 Not Modified reply */
  cgi_reset_content();
  cgi_set_status(304, "Not Modified");
  cgi_reply();
  fossil_exit(0);

Changes to src/export.c.

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  }
  db_finalize(&q);
  db_finalize(&q2);
  db_finalize(&q3);

  /* Output the commit records.
  */

  db_prepare(&q,
    "SELECT strftime('%%s',mtime), objid, coalesce(ecomment,comment),"
    "       coalesce(euser,user),"
    "       (SELECT value FROM tagxref WHERE rid=objid AND tagid=%d)"
    "  FROM event"


    " WHERE type='ci' AND NOT EXISTS (SELECT 1 FROM oldcommit WHERE objid=rid)"
    " ORDER BY mtime ASC",
    TAG_BRANCH
  );
  db_prepare(&q2, "INSERT INTO oldcommit VALUES (:rid)");
  while( db_step(&q)==SQLITE_ROW ){
    Stmt q4;
    const char *zSecondsSince1970 = db_column_text(&q, 0);
    int ckinId = db_column_int(&q, 1);
................................................................................
    const char *zBranch = db_column_text(&q, 4);
    char *zMark;

    bag_insert(&vers, ckinId);
    db_bind_int(&q2, ":rid", ckinId);
    db_step(&q2);
    db_reset(&q2);
    if( zBranch==0 || fossil_strcmp(zBranch, "trunk")==0 ) zBranch = gexport.zTrunkName;


    zMark = mark_name_from_rid(ckinId, &unused_mark);
    printf("commit refs/heads/");
    print_ref(zBranch);
    printf("\nmark %s\n", zMark);
    free(zMark);
    printf("committer");
    print_person(zUser);
................................................................................
    if( ferror(f)!=0 || fclose(f)!=0 ){
      fossil_fatal("error while writing %s", markfile_out);
    }
  }
  bag_clear(&blobs);
  bag_clear(&vers);
}




































































































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  }
  db_finalize(&q);
  db_finalize(&q2);
  db_finalize(&q3);

  /* Output the commit records.
  */
  topological_sort_checkins(0);
  db_prepare(&q,
    "SELECT strftime('%%s',mtime), objid, coalesce(ecomment,comment),"
    "       coalesce(euser,user),"
    "       (SELECT value FROM tagxref WHERE rid=objid AND tagid=%d)"
    "  FROM toponode, event"
    " WHERE toponode.tid=event.objid"
    "   AND event.type='ci'"
    "   AND NOT EXISTS (SELECT 1 FROM oldcommit WHERE toponode.tid=rid)"
    " ORDER BY toponode.tseq ASC",
    TAG_BRANCH
  );
  db_prepare(&q2, "INSERT INTO oldcommit VALUES (:rid)");
  while( db_step(&q)==SQLITE_ROW ){
    Stmt q4;
    const char *zSecondsSince1970 = db_column_text(&q, 0);
    int ckinId = db_column_int(&q, 1);
................................................................................
    const char *zBranch = db_column_text(&q, 4);
    char *zMark;

    bag_insert(&vers, ckinId);
    db_bind_int(&q2, ":rid", ckinId);
    db_step(&q2);
    db_reset(&q2);
    if( zBranch==0 || fossil_strcmp(zBranch, "trunk")==0 ){
      zBranch = gexport.zTrunkName;
    }
    zMark = mark_name_from_rid(ckinId, &unused_mark);
    printf("commit refs/heads/");
    print_ref(zBranch);
    printf("\nmark %s\n", zMark);
    free(zMark);
    printf("committer");
    print_person(zUser);
................................................................................
    if( ferror(f)!=0 || fclose(f)!=0 ){
      fossil_fatal("error while writing %s", markfile_out);
    }
  }
  bag_clear(&blobs);
  bag_clear(&vers);
}

/*
** Construct the temporary table toposort as follows:
**
**     CREATE TEMP TABLE toponode(
**        tid INTEGER PRIMARY KEY,   -- Check-in id
**        tseq INT                   -- integer total order on check-ins.
**     );
**
** This table contains all check-ins of the repository in topological
** order.  "Topological order" means that every parent check-in comes
** before all of its children.  Topological order is *almost* the same
** thing as "ORDER BY event.mtime".  Differences only arrise when there
** are timewarps.  In as much as Git hates timewarps, we have to compute
** a correct topological order when doing an export.
**
** Since mtime is a usually already nearly in topological order, the
** algorithm is to start with mtime, then make adjustments as necessary
** for timewarps.  This is not a great algorithm for the general case,
** but it is very fast for the overwhelmingly common case where there
** are few timewarps.
*/
int topological_sort_checkins(int bVerbose){
  int nChange = 0;
  Stmt q1;
  Stmt chng;
  db_multi_exec(
    "CREATE TEMP TABLE toponode(\n"
    "  tid INTEGER PRIMARY KEY,\n"
    "  tseq INT\n"
    ");\n"
    "INSERT INTO toponode(tid,tseq) "
    " SELECT objid, CAST(mtime*8640000 AS int) FROM event WHERE type='ci';\n"
    "CREATE TEMP TABLE topolink(\n"
    "  tparent INT,\n"
    "  tchild INT,\n"
    "  PRIMARY KEY(tparent,tchild)\n"
    ") WITHOUT ROWID;"
    "INSERT INTO topolink(tparent,tchild)"
    "  SELECT pid, cid FROM plink;\n"
    "CREATE INDEX topolink_child ON topolink(tchild);\n"
  );

  /* Find a timewarp instance */
  db_prepare(&q1,
    "SELECT P.tseq, C.tid, C.tseq\n"
    "  FROM toponode P, toponode C, topolink X\n"
    " WHERE X.tparent=P.tid\n"
    "   AND X.tchild=C.tid\n"
    "   AND P.tseq>=C.tseq;"
  );

  /* Update the timestamp on :tid to have value :tseq */
  db_prepare(&chng,
    "UPDATE toponode SET tseq=:tseq WHERE tid=:tid"
  );

  while( db_step(&q1)==SQLITE_ROW ){
    i64 iParentTime = db_column_int64(&q1, 0);
    int iChild = db_column_int(&q1, 1);
    i64 iChildTime = db_column_int64(&q1, 2);
    nChange++;
    if( nChange>10000 ){
      fossil_fatal("failed to fix all timewarps after 100000 attempts");
    }
    db_reset(&q1);
    db_bind_int64(&chng, ":tid", iChild);
    db_bind_int64(&chng, ":tseq", iParentTime+1);
    db_step(&chng);
    db_reset(&chng);
    if( bVerbose ){
      fossil_print("moving %d from %lld to %lld\n",
                   iChild, iChildTime, iParentTime+1);
    }
  }

  db_finalize(&q1);
  db_finalize(&chng);
  return nChange;
}

/*
** COMMAND: test-topological-sort
**
** Invoke the topological_sort_checkins() interface for testing
** purposes.
*/
void test_topological_sort(void){
  int n;
  db_find_and_open_repository(0, 0);
  n = topological_sort_checkins(1);
  fossil_print("%d reorderings required\n", n);
}

Changes to src/main.c.

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  const char *zValue = find_option("comfmtflags", 0, 1);
  if( zValue ){
    g.comFmtFlags = atoi(zValue);
  }else{
    g.comFmtFlags = COMMENT_PRINT_DEFAULT;
  }
}




















/*
** This procedure runs first.
*/
#if defined(_WIN32) && !defined(BROKEN_MINGW_CMDLINE)
int _dowildcard = -1; /* This turns on command-line globbing in MinGW-w64 */
int wmain(int argc, wchar_t **argv)
................................................................................
    }else{
      fossil_fatal("no such VFS: \"%s\"", g.zVfsName);
    }
  }
  if( fossil_getenv("GATEWAY_INTERFACE")!=0 && !find_option("nocgi", 0, 0)){
    zCmdName = "cgi";
    g.isHTTP = 1;
  }else if( g.argc<2 ){
    fossil_print(
       "Usage: %s COMMAND ...\n"
       "   or: %s help           -- for a list of common commands\n"
       "   or: %s help COMMAND   -- for help with the named command\n",
       g.argv[0], g.argv[0], g.argv[0]);
    fossil_print(
      "\nCommands and filenames may be passed on to fossil from a file\n"







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  const char *zValue = find_option("comfmtflags", 0, 1);
  if( zValue ){
    g.comFmtFlags = atoi(zValue);
  }else{
    g.comFmtFlags = COMMENT_PRINT_DEFAULT;
  }
}

/*
** Check to see if the Fossil binary contains an appended repository
** file using the appendvfs extension.  If so, change command-line arguments
** to cause Fossil to launch with "fossil ui" on that repo.
*/
static int fossilExeHasAppendedRepo(void){
  extern int deduceDatabaseType(const char*,int);
  if( 2==deduceDatabaseType(g.nameOfExe,0) ){
    static char *azAltArgv[] = { 0, "ui", 0, 0 };
    azAltArgv[0] = g.nameOfExe;
    azAltArgv[2] = g.nameOfExe;
    g.argv = azAltArgv;
    g.argc = 3;
    return 1;
  }else{
    return 0;
  }
}

/*
** This procedure runs first.
*/
#if defined(_WIN32) && !defined(BROKEN_MINGW_CMDLINE)
int _dowildcard = -1; /* This turns on command-line globbing in MinGW-w64 */
int wmain(int argc, wchar_t **argv)
................................................................................
    }else{
      fossil_fatal("no such VFS: \"%s\"", g.zVfsName);
    }
  }
  if( fossil_getenv("GATEWAY_INTERFACE")!=0 && !find_option("nocgi", 0, 0)){
    zCmdName = "cgi";
    g.isHTTP = 1;
  }else if( g.argc<2 && !fossilExeHasAppendedRepo() ){
    fossil_print(
       "Usage: %s COMMAND ...\n"
       "   or: %s help           -- for a list of common commands\n"
       "   or: %s help COMMAND   -- for help with the named command\n",
       g.argv[0], g.argv[0], g.argv[0]);
    fossil_print(
      "\nCommands and filenames may be passed on to fossil from a file\n"

Changes to src/path.c.

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    g.argv += 2;
    g.argc -= 2;
  }
}

/* Query to extract all rename operations */
static const char zRenameQuery[] =

@ SELECT
@     datetime(event.mtime),
@     F.name AS old_name,
@     T.name AS new_name,
@     blob.uuid

















@   FROM mlink, filename F, filename T, event, blob
@  WHERE coalesce(mlink.pfnid,0)!=0 AND mlink.pfnid!=mlink.fnid
@    AND F.fnid=mlink.pfnid
@    AND T.fnid=mlink.fnid
@    AND event.objid=mlink.mid
@    AND event.type='ci'
@    AND blob.rid=mlink.mid
@  ORDER BY 1 DESC, 2;
;

/*
** WEBPAGE: test-rename-list
**
** Print a list of all file rename operations throughout history.
** This page is intended for for testing purposes only and may change
** or be discontinued without notice.
*/
void test_rename_list_page(void){
  Stmt q;



  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }

  style_header("List Of File Name Changes");
  @ <h3>NB: Experimental Page</h3>
  @ <table border="1" width="100%%">













  @ <tr><th>Date &amp; Time</th>
  @ <th>Old Name</th>
  @ <th>New Name</th>
  @ <th>Check-in</th></tr>
  db_prepare(&q, "%s", zRenameQuery/*safe-for-%s*/);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zOld = db_column_text(&q, 1);
    const char *zNew = db_column_text(&q, 2);
    const char *zUuid = db_column_text(&q, 3);
    @ <tr>
    @ <td>%z(href("%R/timeline?c=%t",zDate))%s(zDate)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zOld))%h(zOld)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zNew))%h(zNew)</a></td>
    @ <td>%z(href("%R/info/%!S",zUuid))%S(zUuid)</a></td></tr>
  }
  @ </table>
  db_finalize(&q);

  style_footer();
}







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    g.argv += 2;
    g.argc -= 2;
  }
}

/* Query to extract all rename operations */
static const char zRenameQuery[] =
@ CREATE TEMP TABLE renames AS
@ SELECT
@     datetime(event.mtime) AS date,
@     F.name AS old_name,
@     T.name AS new_name,
@     blob.uuid AS checkin
@   FROM mlink, filename F, filename T, event, blob
@  WHERE coalesce(mlink.pfnid,0)!=0 AND mlink.pfnid!=mlink.fnid
@    AND F.fnid=mlink.pfnid
@    AND T.fnid=mlink.fnid
@    AND event.objid=mlink.mid
@    AND event.type='ci'
@    AND blob.rid=mlink.mid;
;

/* Query to extract distinct rename operations */
static const char zDistinctRenameQuery[] =
@ CREATE TEMP TABLE renames AS
@ SELECT
@     min(datetime(event.mtime)) AS date,
@     F.name AS old_name,
@     T.name AS new_name,
@     blob.uuid AS checkin
@   FROM mlink, filename F, filename T, event, blob
@  WHERE coalesce(mlink.pfnid,0)!=0 AND mlink.pfnid!=mlink.fnid
@    AND F.fnid=mlink.pfnid
@    AND T.fnid=mlink.fnid
@    AND event.objid=mlink.mid
@    AND event.type='ci'
@    AND blob.rid=mlink.mid
@  GROUP BY 2, 3;
;

/*
** WEBPAGE: test-rename-list
**
** Print a list of all file rename operations throughout history.
** This page is intended for for testing purposes only and may change
** or be discontinued without notice.
*/
void test_rename_list_page(void){
  Stmt q;
  int nRename;
  int nCheckin;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( P("all")!=0 ){
    style_header("List Of All Filename Changes");

    db_multi_exec("%s", zRenameQuery/*safe-for-%s*/);
    style_submenu_element("Distinct", "%R/test-rename-list");
  }else{
    style_header("List Of Distinct Filename Changes");
    db_multi_exec("%s", zDistinctRenameQuery/*safe-for-%s*/);
    style_submenu_element("All", "%R/test-rename-list?all");
  }
  nRename = db_int(0, "SELECT count(*) FROM renames;");
  nCheckin = db_int(0, "SELECT count(DISTINCT checkin) FROM renames;");
  db_prepare(&q, "SELECT date, old_name, new_name, checkin FROM renames"
                 " ORDER BY date DESC, old_name ASC");
  @ <h1>%d(nRename) filename changes in %d(nCheckin) check-ins</h1>
  @ <table class='sortable' data-column-types='tttt' data-init-sort='1'\
  @  border="1" cellpadding="2" cellspacing="0">
  @ <thead><tr><th>Date &amp; Time</th>
  @ <th>Old Name</th>
  @ <th>New Name</th>
  @ <th>Check-in</th></tr></thead><tbody>

  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zOld = db_column_text(&q, 1);
    const char *zNew = db_column_text(&q, 2);
    const char *zUuid = db_column_text(&q, 3);
    @ <tr>
    @ <td>%z(href("%R/timeline?c=%t",zDate))%s(zDate)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zOld))%h(zOld)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zNew))%h(zNew)</a></td>
    @ <td>%z(href("%R/info/%!S",zUuid))%S(zUuid)</a></td></tr>
  }
  @ </tbody></table>
  db_finalize(&q);
  style_table_sorter();
  style_footer();
}

Changes to src/shell.c.

7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
....
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....
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8487
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....
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8508
8509
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....
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....
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9178
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....
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....
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9614
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9623
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.....
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10456
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10460
10461

10462
10463
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10465
10466
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10468
10469
10470
.....
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10836
10837

10838
10839
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10842
10843
10844

10845
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10851
.....
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.....
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11088

11089
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.....
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11196
.....
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13154

13155
13156
13157
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13161
.....
13280
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13285
13286




























13287
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13291
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13293
13294
.....
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13388
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13394
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13400
.....
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.....
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.....
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.....
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.....
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15495
15496
15497
15498
15499
15500
15501
15502
    IdxHashEntry *pEntry;
    sqlite3_stmt *pExplain = 0;
    idxHashClear(&hIdx);
    rc = idxPrintfPrepareStmt(dbm, &pExplain, pzErr,
        "EXPLAIN QUERY PLAN %s", pStmt->zSql
    );
    while( rc==SQLITE_OK && sqlite3_step(pExplain)==SQLITE_ROW ){
      int iSelectid = sqlite3_column_int(pExplain, 0);
      int iOrder = sqlite3_column_int(pExplain, 1);
      int iFrom = sqlite3_column_int(pExplain, 2);
      const char *zDetail = (const char*)sqlite3_column_text(pExplain, 3);
      int nDetail = STRLEN(zDetail);
      int i;

      for(i=0; i<nDetail; i++){
        const char *zIdx = 0;
        if( memcmp(&zDetail[i], " USING INDEX ", 13)==0 ){
................................................................................
            idxHashAdd(&rc, &hIdx, zSql, 0);
            if( rc ) goto find_indexes_out;
          }
          break;
        }
      }

      pStmt->zEQP = idxAppendText(&rc, pStmt->zEQP, "%d|%d|%d|%s\n", 
          iSelectid, iOrder, iFrom, zDetail
      );
    }

    for(pEntry=hIdx.pFirst; pEntry; pEntry=pEntry->pNext){
      pStmt->zIdx = idxAppendText(&rc, pStmt->zIdx, "%s;\n", pEntry->zKey);
    }

    idxFinalize(&rc, pExplain);
................................................................................
  sqlite3expert *pExpert;
  int bVerbose;
};

/* A single line in the EQP output */
typedef struct EQPGraphRow EQPGraphRow;
struct EQPGraphRow {
  int iSelectId;        /* The SelectID for this row */

  EQPGraphRow *pNext;   /* Next row in sequence */
  char zText[1];        /* Text to display for this row */
};

/* All EQP output is collected into an instance of the following */
typedef struct EQPGraph EQPGraph;
struct EQPGraph {
................................................................................
** instance of the following structure.
*/
typedef struct ShellState ShellState;
struct ShellState {
  sqlite3 *db;           /* The database */
  u8 autoExplain;        /* Automatically turn on .explain mode */
  u8 autoEQP;            /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */

  u8 statsOn;            /* True to display memory stats before each finalize */
  u8 scanstatsOn;        /* True to display scan stats before each finalize */
  u8 openMode;           /* SHELL_OPEN_NORMAL, _APPENDVFS, or _ZIPFILE */
  u8 doXdgOpen;          /* Invoke start/open/xdg-open in output_reset() */
  u8 nEqpLevel;          /* Depth of the EQP output graph */
  unsigned mEqpLines;    /* Mask of veritical lines in the EQP output graph */
  int outCount;          /* Revert to stdout when reaching zero */
................................................................................
#endif
  ExpertInfo expert;        /* Valid if previous command was ".expert OPT..." */
};


/* Allowed values for ShellState.autoEQP
*/
#define AUTOEQP_off      0
#define AUTOEQP_on       1
#define AUTOEQP_trigger  2
#define AUTOEQP_full     3

/* Allowed values for ShellState.openMode
*/
#define SHELL_OPEN_UNSPEC     0      /* No open-mode specified */
#define SHELL_OPEN_NORMAL     1      /* Normal database file */
#define SHELL_OPEN_APPENDVFS  2      /* Use appendvfs */
#define SHELL_OPEN_ZIPFILE    3      /* Use the zipfile virtual table */
................................................................................
  }
  return 1;
}

/*
** Add a new entry to the EXPLAIN QUERY PLAN data
*/
static void eqp_append(ShellState *p, int iSelectId, const char *zText){
  EQPGraphRow *pNew;
  int nText = strlen30(zText);



  pNew = sqlite3_malloc64( sizeof(*pNew) + nText );
  if( pNew==0 ) shell_out_of_memory();
  pNew->iSelectId = iSelectId;


  memcpy(pNew->zText, zText, nText+1);
  pNew->pNext = 0;
  if( p->sGraph.pLast ){
    p->sGraph.pLast->pNext = pNew;
  }else{
    p->sGraph.pRow = pNew;
  }
................................................................................
  for(pRow = p->sGraph.pRow; pRow; pRow = pNext){
    pNext = pRow->pNext;
    sqlite3_free(pRow);
  }
  memset(&p->sGraph, 0, sizeof(p->sGraph));
}

/* Return the next EXPLAIN QUERY PLAN line with iSelectId that occurs after
** pOld, or return the first such line if pOld is NULL
*/
static EQPGraphRow *eqp_next_row(ShellState *p, int iSelectId, EQPGraphRow *pOld){
  EQPGraphRow *pRow = pOld ? pOld->pNext : p->sGraph.pRow;
  while( pRow && pRow->iSelectId!=iSelectId ) pRow = pRow->pNext;
  return pRow;
}

/* Render a single level of the graph shell having iSelectId.  Called
** recursively to render sublevels.
*/
static void eqp_render_level(ShellState *p, int iSelectId){
  EQPGraphRow *pRow, *pNext;
  int i;
  int n = strlen30(p->sGraph.zPrefix);
  char *z;
  for(pRow = eqp_next_row(p, iSelectId, 0); pRow; pRow = pNext){
    pNext = eqp_next_row(p, iSelectId, pRow);
    z = pRow->zText;
    utf8_printf(p->out, "%s%s%s\n", p->sGraph.zPrefix, pNext ? "|--" : "`--", z);
    if( n<sizeof(p->sGraph.zPrefix)-7 && (z = strstr(z, " SUBQUER"))!=0 ){
      memcpy(&p->sGraph.zPrefix[n], pNext ? "|  " : "   ", 4);
      if( strncmp(z, " SUBQUERY ", 9)==0 && (i = atoi(z+10))>iSelectId ){
        eqp_render_level(p, i);
      }else if( strncmp(z, " SUBQUERIES ", 12)==0 ){
        i = atoi(z+12);
        if( i>iSelectId ){
          utf8_printf(p->out, "%s|--SUBQUERY %d\n", p->sGraph.zPrefix, i);
          memcpy(&p->sGraph.zPrefix[n+3],"|  ",4);
          eqp_render_level(p, i);
        }
        z = strstr(z, " AND ");
        if( z && (i = atoi(z+5))>iSelectId ){
          p->sGraph.zPrefix[n+3] = 0;
          utf8_printf(p->out, "%s`--SUBQUERY %d\n", p->sGraph.zPrefix, i);
          memcpy(&p->sGraph.zPrefix[n+3],"   ",4);
          eqp_render_level(p, i);
        }
      }
      p->sGraph.zPrefix[n] = 0;
    }
  }
}

/*
** Display and reset the EXPLAIN QUERY PLAN data
................................................................................
        if( i>0 ) utf8_printf(p->out, "%s", p->colSeparator);
        utf8_printf(p->out,"%s",azArg[i] ? azArg[i] : p->nullValue);
      }
      utf8_printf(p->out, "%s", p->rowSeparator);
      break;
    }
    case MODE_EQP: {
      eqp_append(p, atoi(azArg[0]), azArg[3]);
      break;
    }
  }
  return 0;
}

/*
................................................................................
          sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, 1, 0);
        }
        zEQP = sqlite3_mprintf("EXPLAIN QUERY PLAN %s", zStmtSql);
        rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0);
        if( rc==SQLITE_OK ){
          while( sqlite3_step(pExplain)==SQLITE_ROW ){
            const char *zEQPLine = (const char*)sqlite3_column_text(pExplain,3);
            int iSelectId = sqlite3_column_int(pExplain, 0);

            if( zEQPLine[0]=='-' ) eqp_render(pArg);
            eqp_append(pArg, iSelectId, zEQPLine);
          }
          eqp_render(pArg);
        }
        sqlite3_finalize(pExplain);
        sqlite3_free(zEQP);
        if( pArg->autoEQP>=AUTOEQP_full ){
          /* Also do an EXPLAIN for ".eqp full" mode */
................................................................................
#if defined(SQLITE_HAVE_ZLIB) && !defined(SQLITE_OMIT_VIRTUALTABLE)
  ".archive ...           Manage SQL archives: \".archive --help\" for details\n"
#endif
#ifndef SQLITE_OMIT_AUTHORIZATION
  ".auth ON|OFF           Show authorizer callbacks\n"
#endif
  ".backup ?DB? FILE      Backup DB (default \"main\") to FILE\n"

  ".bail on|off           Stop after hitting an error.  Default OFF\n"
  ".binary on|off         Turn binary output on or off.  Default OFF\n"
  ".cd DIRECTORY          Change the working directory to DIRECTORY\n"
  ".changes on|off        Show number of rows changed by SQL\n"
  ".check GLOB            Fail if output since .testcase does not match\n"
  ".clone NEWDB           Clone data into NEWDB from the existing database\n"
  ".databases             List names and files of attached databases\n"

  ".dbinfo ?DB?           Show status information about the database\n"
  ".dump ?TABLE? ...      Dump the database in an SQL text format\n"
  "                         If TABLE specified, only dump tables matching\n"
  "                         LIKE pattern TABLE.\n"
  ".echo on|off           Turn command echo on or off\n"
  ".eqp on|off|full       Enable or disable automatic EXPLAIN QUERY PLAN\n"
  ".excel                 Display the output of next command in a spreadsheet\n"
................................................................................
** one of the SHELL_OPEN_* constants.
**
** If the file does not exist or is empty but its name looks like a ZIP
** archive and the dfltZip flag is true, then assume it is a ZIP archive.
** Otherwise, assume an ordinary database regardless of the filename if
** the type cannot be determined from content.
*/
static int deduceDatabaseType(const char *zName, int dfltZip){
  FILE *f = fopen(zName, "rb");
  size_t n;
  int rc = SHELL_OPEN_UNSPEC;
  char zBuf[100];
  if( f==0 ){
    if( dfltZip && sqlite3_strlike("%.zip",zName,0)==0 ) return SHELL_OPEN_ZIPFILE;
    return SHELL_OPEN_NORMAL;
................................................................................

/*
** Make sure the database is open.  If it is not, then open it.  If
** the database fails to open, print an error message and exit.
*/
static void open_db(ShellState *p, int keepAlive){
  if( p->db==0 ){
    if( p->openMode==SHELL_OPEN_UNSPEC && access(p->zDbFilename,0)==0 ){



      p->openMode = (u8)deduceDatabaseType(p->zDbFilename, 0);

    }
    switch( p->openMode ){
      case SHELL_OPEN_APPENDVFS: {
        sqlite3_open_v2(p->zDbFilename, &p->db, 
           SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, "apndvfs");
        break;
      }
................................................................................
  int nLine = strlen30(zLine);
  int i, iStart;
  sqlite3_stmt *pStmt = 0;
  char *zSql;
  char zBuf[1000];

  if( nLine>sizeof(zBuf)-30 ) return;
  if( zLine[0]=='.' ) return;
  for(i=nLine-1; i>=0 && (isalnum(zLine[i]) || zLine[i]=='_'); i--){}
  if( i==nLine-1 ) return;
  iStart = i+1;
  memcpy(zBuf, zLine, iStart);
  zSql = sqlite3_mprintf("SELECT DISTINCT candidate COLLATE nocase"
                         "  FROM completion(%Q,%Q) ORDER BY 1",
                         &zLine[iStart], zLine);
................................................................................
   || (c=='s' && n>=3 && strncmp(azArg[0], "save", n)==0)
  ){
    const char *zDestFile = 0;
    const char *zDb = 0;
    sqlite3 *pDest;
    sqlite3_backup *pBackup;
    int j;

    for(j=1; j<nArg; j++){
      const char *z = azArg[j];
      if( z[0]=='-' ){
        while( z[0]=='-' ) z++;
        /* No options to process at this time */


        {
          utf8_printf(stderr, "unknown option: %s\n", azArg[j]);
          return 1;
        }
      }else if( zDestFile==0 ){
        zDestFile = azArg[j];
      }else if( zDb==0 ){
        zDb = zDestFile;
        zDestFile = azArg[j];
      }else{
        raw_printf(stderr, "too many arguments to .backup\n");
        return 1;
      }
    }
    if( zDestFile==0 ){
      raw_printf(stderr, "missing FILENAME argument on .backup\n");
      return 1;
    }
    if( zDb==0 ) zDb = "main";
    rc = sqlite3_open(zDestFile, &pDest);

    if( rc!=SQLITE_OK ){
      utf8_printf(stderr, "Error: cannot open \"%s\"\n", zDestFile);
      sqlite3_close(pDest);
      return 1;
    }
    open_db(p, 0);
    pBackup = sqlite3_backup_init(pDest, "main", p->db, zDb);
................................................................................
    if( zErrMsg ){
      utf8_printf(stderr,"Error: %s\n", zErrMsg);
      sqlite3_free(zErrMsg);
      rc = 1;
    }
  }else





























  if( c=='d' && strncmp(azArg[0], "dbinfo", n)==0 ){
    rc = shell_dbinfo_command(p, nArg, azArg);
  }else

  if( c=='d' && strncmp(azArg[0], "dump", n)==0 ){
    const char *zLike = 0;
    int i;
    int savedShowHeader = p->showHeader;
................................................................................
      raw_printf(stderr, "Usage: .echo on|off\n");
      rc = 1;
    }
  }else

  if( c=='e' && strncmp(azArg[0], "eqp", n)==0 ){
    if( nArg==2 ){

      if( strcmp(azArg[1],"full")==0 ){
        p->autoEQP = AUTOEQP_full;
      }else if( strcmp(azArg[1],"trigger")==0 ){
        p->autoEQP = AUTOEQP_trigger;



      }else{
        p->autoEQP = (u8)booleanValue(azArg[1]);
      }
    }else{
      raw_printf(stderr, "Usage: .eqp off|on|trigger|full\n");
      rc = 1;
    }
................................................................................
      raw_printf(p->out, "/* No STAT tables available */\n");
    }else{
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
      sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_master'",
                   callback, &data, &zErrMsg);
      data.cMode = data.mode = MODE_Insert;
      data.zDestTable = "sqlite_stat1";
      shell_exec(p, "SELECT * FROM sqlite_stat1", &zErrMsg);
      data.zDestTable = "sqlite_stat3";
      shell_exec(p, "SELECT * FROM sqlite_stat3", &zErrMsg);
      data.zDestTable = "sqlite_stat4";
      shell_exec(p, "SELECT * FROM sqlite_stat4", &zErrMsg);
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
    }
  }else

  if( c=='h' && strncmp(azArg[0], "headers", n)==0 ){
    if( nArg==2 ){
      p->showHeader = booleanValue(azArg[1]);
................................................................................
        if( strcmp(z,"debug")==0 ){
          bDebug = 1;
        }else
        {
          utf8_printf(stderr, "Unknown option \"%s\" on \"%s\"\n",
                      azArg[i], azArg[0]);
          raw_printf(stderr, "Should be one of: --schema"
                             " --sha3-224 --sha3-255 --sha3-384 --sha3-512\n");
          rc = 1;
          goto meta_command_exit;
        }
      }else if( zLike ){
        raw_printf(stderr, "Usage: .sha3sum ?OPTIONS? ?LIKE-PATTERN?\n");
        rc = 1;
        goto meta_command_exit;
................................................................................
  zSql[nSql+1] = 0;
  rc = sqlite3_complete(zSql);
  zSql[nSql] = 0;
  return rc;
}

/*
** Run a single line of SQL
*/
static int runOneSqlLine(ShellState *p, char *zSql, FILE *in, int startline){
  int rc;
  char *zErrMsg = 0;

  open_db(p, 0);
  if( ShellHasFlag(p,SHFLG_Backslash) ) resolve_backslashes(zSql);
................................................................................
      seenInterrupt = 0;
    }
    lineno++;
    if( nSql==0 && _all_whitespace(zLine) ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine);
      continue;
    }
    if( zLine && zLine[0]=='.' && nSql==0 ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine);

      rc = do_meta_command(zLine, p);
      if( rc==2 ){ /* exit requested */
        break;
      }else if( rc ){
        errCnt++;

      }
      continue;
    }
    if( line_is_command_terminator(zLine) && line_is_complete(zSql, nSql) ){
      memcpy(zLine,";",2);
    }
    nLine = strlen30(zLine);
................................................................................
      }
    }else if( nSql && _all_whitespace(zSql) ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zSql);
      nSql = 0;
    }
  }
  if( nSql && !_all_whitespace(zSql) ){
    runOneSqlLine(p, zSql, in, startline);
  }
  free(zSql);
  free(zLine);
  return errCnt>0;
}

/*







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.....
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.....
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.....
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.....
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15534
    IdxHashEntry *pEntry;
    sqlite3_stmt *pExplain = 0;
    idxHashClear(&hIdx);
    rc = idxPrintfPrepareStmt(dbm, &pExplain, pzErr,
        "EXPLAIN QUERY PLAN %s", pStmt->zSql
    );
    while( rc==SQLITE_OK && sqlite3_step(pExplain)==SQLITE_ROW ){
      /* int iId = sqlite3_column_int(pExplain, 0); */
      /* int iParent = sqlite3_column_int(pExplain, 1); */
      /* int iNotUsed = sqlite3_column_int(pExplain, 2); */
      const char *zDetail = (const char*)sqlite3_column_text(pExplain, 3);
      int nDetail = STRLEN(zDetail);
      int i;

      for(i=0; i<nDetail; i++){
        const char *zIdx = 0;
        if( memcmp(&zDetail[i], " USING INDEX ", 13)==0 ){
................................................................................
            idxHashAdd(&rc, &hIdx, zSql, 0);
            if( rc ) goto find_indexes_out;
          }
          break;
        }
      }

      pStmt->zEQP = idxAppendText(&rc, pStmt->zEQP, "%s\n", zDetail);


    }

    for(pEntry=hIdx.pFirst; pEntry; pEntry=pEntry->pNext){
      pStmt->zIdx = idxAppendText(&rc, pStmt->zIdx, "%s;\n", pEntry->zKey);
    }

    idxFinalize(&rc, pExplain);
................................................................................
  sqlite3expert *pExpert;
  int bVerbose;
};

/* A single line in the EQP output */
typedef struct EQPGraphRow EQPGraphRow;
struct EQPGraphRow {
  int iEqpId;           /* ID for this row */
  int iParentId;        /* ID of the parent row */
  EQPGraphRow *pNext;   /* Next row in sequence */
  char zText[1];        /* Text to display for this row */
};

/* All EQP output is collected into an instance of the following */
typedef struct EQPGraph EQPGraph;
struct EQPGraph {
................................................................................
** instance of the following structure.
*/
typedef struct ShellState ShellState;
struct ShellState {
  sqlite3 *db;           /* The database */
  u8 autoExplain;        /* Automatically turn on .explain mode */
  u8 autoEQP;            /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */
  u8 autoEQPtest;        /* autoEQP is in test mode */
  u8 statsOn;            /* True to display memory stats before each finalize */
  u8 scanstatsOn;        /* True to display scan stats before each finalize */
  u8 openMode;           /* SHELL_OPEN_NORMAL, _APPENDVFS, or _ZIPFILE */
  u8 doXdgOpen;          /* Invoke start/open/xdg-open in output_reset() */
  u8 nEqpLevel;          /* Depth of the EQP output graph */
  unsigned mEqpLines;    /* Mask of veritical lines in the EQP output graph */
  int outCount;          /* Revert to stdout when reaching zero */
................................................................................
#endif
  ExpertInfo expert;        /* Valid if previous command was ".expert OPT..." */
};


/* Allowed values for ShellState.autoEQP
*/
#define AUTOEQP_off      0           /* Automatic EXPLAIN QUERY PLAN is off */
#define AUTOEQP_on       1           /* Automatic EQP is on */
#define AUTOEQP_trigger  2           /* On and also show plans for triggers */
#define AUTOEQP_full     3           /* Show full EXPLAIN */

/* Allowed values for ShellState.openMode
*/
#define SHELL_OPEN_UNSPEC     0      /* No open-mode specified */
#define SHELL_OPEN_NORMAL     1      /* Normal database file */
#define SHELL_OPEN_APPENDVFS  2      /* Use appendvfs */
#define SHELL_OPEN_ZIPFILE    3      /* Use the zipfile virtual table */
................................................................................
  }
  return 1;
}

/*
** Add a new entry to the EXPLAIN QUERY PLAN data
*/
static void eqp_append(ShellState *p, int iEqpId, int p2, const char *zText){
  EQPGraphRow *pNew;
  int nText = strlen30(zText);
  if( p->autoEQPtest ){
    utf8_printf(p->out, "%d,%d,%s\n", iEqpId, p2, zText);
  }
  pNew = sqlite3_malloc64( sizeof(*pNew) + nText );
  if( pNew==0 ) shell_out_of_memory();

  pNew->iEqpId = iEqpId;
  pNew->iParentId = p2;
  memcpy(pNew->zText, zText, nText+1);
  pNew->pNext = 0;
  if( p->sGraph.pLast ){
    p->sGraph.pLast->pNext = pNew;
  }else{
    p->sGraph.pRow = pNew;
  }
................................................................................
  for(pRow = p->sGraph.pRow; pRow; pRow = pNext){
    pNext = pRow->pNext;
    sqlite3_free(pRow);
  }
  memset(&p->sGraph, 0, sizeof(p->sGraph));
}

/* Return the next EXPLAIN QUERY PLAN line with iEqpId that occurs after
** pOld, or return the first such line if pOld is NULL
*/
static EQPGraphRow *eqp_next_row(ShellState *p, int iEqpId, EQPGraphRow *pOld){
  EQPGraphRow *pRow = pOld ? pOld->pNext : p->sGraph.pRow;
  while( pRow && pRow->iParentId!=iEqpId ) pRow = pRow->pNext;
  return pRow;
}

/* Render a single level of the graph that has iEqpId as its parent.  Called
** recursively to render sublevels.
*/
static void eqp_render_level(ShellState *p, int iEqpId){
  EQPGraphRow *pRow, *pNext;

  int n = strlen30(p->sGraph.zPrefix);
  char *z;
  for(pRow = eqp_next_row(p, iEqpId, 0); pRow; pRow = pNext){
    pNext = eqp_next_row(p, iEqpId, pRow);
    z = pRow->zText;
    utf8_printf(p->out, "%s%s%s\n", p->sGraph.zPrefix, pNext ? "|--" : "`--", z);
    if( n<(int)sizeof(p->sGraph.zPrefix)-7 ){
      memcpy(&p->sGraph.zPrefix[n], pNext ? "|  " : "   ", 4);

      eqp_render_level(p, pRow->iEqpId);















      p->sGraph.zPrefix[n] = 0;
    }
  }
}

/*
** Display and reset the EXPLAIN QUERY PLAN data
................................................................................
        if( i>0 ) utf8_printf(p->out, "%s", p->colSeparator);
        utf8_printf(p->out,"%s",azArg[i] ? azArg[i] : p->nullValue);
      }
      utf8_printf(p->out, "%s", p->rowSeparator);
      break;
    }
    case MODE_EQP: {
      eqp_append(p, atoi(azArg[0]), atoi(azArg[1]), azArg[3]);
      break;
    }
  }
  return 0;
}

/*
................................................................................
          sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, 1, 0);
        }
        zEQP = sqlite3_mprintf("EXPLAIN QUERY PLAN %s", zStmtSql);
        rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0);
        if( rc==SQLITE_OK ){
          while( sqlite3_step(pExplain)==SQLITE_ROW ){
            const char *zEQPLine = (const char*)sqlite3_column_text(pExplain,3);
            int iEqpId = sqlite3_column_int(pExplain, 0);
            int iParentId = sqlite3_column_int(pExplain, 1);
            if( zEQPLine[0]=='-' ) eqp_render(pArg);
            eqp_append(pArg, iEqpId, iParentId, zEQPLine);
          }
          eqp_render(pArg);
        }
        sqlite3_finalize(pExplain);
        sqlite3_free(zEQP);
        if( pArg->autoEQP>=AUTOEQP_full ){
          /* Also do an EXPLAIN for ".eqp full" mode */
................................................................................
#if defined(SQLITE_HAVE_ZLIB) && !defined(SQLITE_OMIT_VIRTUALTABLE)
  ".archive ...           Manage SQL archives: \".archive --help\" for details\n"
#endif
#ifndef SQLITE_OMIT_AUTHORIZATION
  ".auth ON|OFF           Show authorizer callbacks\n"
#endif
  ".backup ?DB? FILE      Backup DB (default \"main\") to FILE\n"
  "                         Add \"--append\" to open using appendvfs.\n"
  ".bail on|off           Stop after hitting an error.  Default OFF\n"
  ".binary on|off         Turn binary output on or off.  Default OFF\n"
  ".cd DIRECTORY          Change the working directory to DIRECTORY\n"
  ".changes on|off        Show number of rows changed by SQL\n"
  ".check GLOB            Fail if output since .testcase does not match\n"
  ".clone NEWDB           Clone data into NEWDB from the existing database\n"
  ".databases             List names and files of attached databases\n"
  ".dbconfig ?op? ?val?   List or change sqlite3_db_config() options\n"
  ".dbinfo ?DB?           Show status information about the database\n"
  ".dump ?TABLE? ...      Dump the database in an SQL text format\n"
  "                         If TABLE specified, only dump tables matching\n"
  "                         LIKE pattern TABLE.\n"
  ".echo on|off           Turn command echo on or off\n"
  ".eqp on|off|full       Enable or disable automatic EXPLAIN QUERY PLAN\n"
  ".excel                 Display the output of next command in a spreadsheet\n"
................................................................................
** one of the SHELL_OPEN_* constants.
**
** If the file does not exist or is empty but its name looks like a ZIP
** archive and the dfltZip flag is true, then assume it is a ZIP archive.
** Otherwise, assume an ordinary database regardless of the filename if
** the type cannot be determined from content.
*/
int deduceDatabaseType(const char *zName, int dfltZip){
  FILE *f = fopen(zName, "rb");
  size_t n;
  int rc = SHELL_OPEN_UNSPEC;
  char zBuf[100];
  if( f==0 ){
    if( dfltZip && sqlite3_strlike("%.zip",zName,0)==0 ) return SHELL_OPEN_ZIPFILE;
    return SHELL_OPEN_NORMAL;
................................................................................

/*
** Make sure the database is open.  If it is not, then open it.  If
** the database fails to open, print an error message and exit.
*/
static void open_db(ShellState *p, int keepAlive){
  if( p->db==0 ){
    if( p->openMode==SHELL_OPEN_UNSPEC ){
      if( p->zDbFilename==0 || p->zDbFilename[0]==0 ){
        p->openMode = SHELL_OPEN_NORMAL;
      }else if( access(p->zDbFilename,0)==0 ){
        p->openMode = (u8)deduceDatabaseType(p->zDbFilename, 0);
      }
    }
    switch( p->openMode ){
      case SHELL_OPEN_APPENDVFS: {
        sqlite3_open_v2(p->zDbFilename, &p->db, 
           SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, "apndvfs");
        break;
      }
................................................................................
  int nLine = strlen30(zLine);
  int i, iStart;
  sqlite3_stmt *pStmt = 0;
  char *zSql;
  char zBuf[1000];

  if( nLine>sizeof(zBuf)-30 ) return;
  if( zLine[0]=='.' || zLine[0]=='#') return;
  for(i=nLine-1; i>=0 && (isalnum(zLine[i]) || zLine[i]=='_'); i--){}
  if( i==nLine-1 ) return;
  iStart = i+1;
  memcpy(zBuf, zLine, iStart);
  zSql = sqlite3_mprintf("SELECT DISTINCT candidate COLLATE nocase"
                         "  FROM completion(%Q,%Q) ORDER BY 1",
                         &zLine[iStart], zLine);
................................................................................
   || (c=='s' && n>=3 && strncmp(azArg[0], "save", n)==0)
  ){
    const char *zDestFile = 0;
    const char *zDb = 0;
    sqlite3 *pDest;
    sqlite3_backup *pBackup;
    int j;
    const char *zVfs = 0;
    for(j=1; j<nArg; j++){
      const char *z = azArg[j];
      if( z[0]=='-' ){
        if( z[1]=='-' ) z++;
        if( strcmp(z, "-append")==0 ){
          zVfs = "apndvfs";
        }else
        {
          utf8_printf(stderr, "unknown option: %s\n", azArg[j]);
          return 1;
        }
      }else if( zDestFile==0 ){
        zDestFile = azArg[j];
      }else if( zDb==0 ){
        zDb = zDestFile;
        zDestFile = azArg[j];
      }else{
        raw_printf(stderr, "Usage: .backup ?DB? ?--append? FILENAME\n");
        return 1;
      }
    }
    if( zDestFile==0 ){
      raw_printf(stderr, "missing FILENAME argument on .backup\n");
      return 1;
    }
    if( zDb==0 ) zDb = "main";
    rc = sqlite3_open_v2(zDestFile, &pDest, 
                  SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, zVfs);
    if( rc!=SQLITE_OK ){
      utf8_printf(stderr, "Error: cannot open \"%s\"\n", zDestFile);
      sqlite3_close(pDest);
      return 1;
    }
    open_db(p, 0);
    pBackup = sqlite3_backup_init(pDest, "main", p->db, zDb);
................................................................................
    if( zErrMsg ){
      utf8_printf(stderr,"Error: %s\n", zErrMsg);
      sqlite3_free(zErrMsg);
      rc = 1;
    }
  }else

  if( c=='d' && n>=3 && strncmp(azArg[0], "dbconfig", n)==0 ){
    static const struct DbConfigChoices {const char *zName; int op;} aDbConfig[] = {
        { "enable_fkey",      SQLITE_DBCONFIG_ENABLE_FKEY            },
        { "enable_trigger",   SQLITE_DBCONFIG_ENABLE_TRIGGER         },
        { "fts3_tokenizer",   SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER  },
        { "load_extension",   SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION  },
        { "no_ckpt_on_close", SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE       },
        { "enable_qpsg",      SQLITE_DBCONFIG_ENABLE_QPSG            },
        { "trigger_eqp",      SQLITE_DBCONFIG_TRIGGER_EQP            },
        { "reset_database",   SQLITE_DBCONFIG_RESET_DATABASE         },
    };
    int ii, v;
    open_db(p, 0);
    for(ii=0; ii<ArraySize(aDbConfig); ii++){
      if( nArg>1 && strcmp(azArg[1], aDbConfig[ii].zName)!=0 ) continue;
      if( nArg>=3 ){
        sqlite3_db_config(p->db, aDbConfig[ii].op, booleanValue(azArg[2]), 0);
      }
      sqlite3_db_config(p->db, aDbConfig[ii].op, -1, &v);
      utf8_printf(p->out, "%18s %s\n", aDbConfig[ii].zName, v ? "on" : "off");
      if( nArg>1 ) break;
    }
    if( nArg>1 && ii==ArraySize(aDbConfig) ){
      utf8_printf(stderr, "Error: unknown dbconfig \"%s\"\n", azArg[1]);
      utf8_printf(stderr, "Enter \".dbconfig\" with no arguments for a list\n");
    }   
  }else

  if( c=='d' && n>=3 && strncmp(azArg[0], "dbinfo", n)==0 ){
    rc = shell_dbinfo_command(p, nArg, azArg);
  }else

  if( c=='d' && strncmp(azArg[0], "dump", n)==0 ){
    const char *zLike = 0;
    int i;
    int savedShowHeader = p->showHeader;
................................................................................
      raw_printf(stderr, "Usage: .echo on|off\n");
      rc = 1;
    }
  }else

  if( c=='e' && strncmp(azArg[0], "eqp", n)==0 ){
    if( nArg==2 ){
      p->autoEQPtest = 0;
      if( strcmp(azArg[1],"full")==0 ){
        p->autoEQP = AUTOEQP_full;
      }else if( strcmp(azArg[1],"trigger")==0 ){
        p->autoEQP = AUTOEQP_trigger;
      }else if( strcmp(azArg[1],"test")==0 ){
        p->autoEQP = AUTOEQP_on;
        p->autoEQPtest = 1;
      }else{
        p->autoEQP = (u8)booleanValue(azArg[1]);
      }
    }else{
      raw_printf(stderr, "Usage: .eqp off|on|trigger|full\n");
      rc = 1;
    }
................................................................................
      raw_printf(p->out, "/* No STAT tables available */\n");
    }else{
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
      sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_master'",
                   callback, &data, &zErrMsg);
      data.cMode = data.mode = MODE_Insert;
      data.zDestTable = "sqlite_stat1";
      shell_exec(&data, "SELECT * FROM sqlite_stat1", &zErrMsg);
      data.zDestTable = "sqlite_stat3";
      shell_exec(&data, "SELECT * FROM sqlite_stat3", &zErrMsg);
      data.zDestTable = "sqlite_stat4";
      shell_exec(&data, "SELECT * FROM sqlite_stat4", &zErrMsg);
      raw_printf(p->out, "ANALYZE sqlite_master;\n");
    }
  }else

  if( c=='h' && strncmp(azArg[0], "headers", n)==0 ){
    if( nArg==2 ){
      p->showHeader = booleanValue(azArg[1]);
................................................................................
        if( strcmp(z,"debug")==0 ){
          bDebug = 1;
        }else
        {
          utf8_printf(stderr, "Unknown option \"%s\" on \"%s\"\n",
                      azArg[i], azArg[0]);
          raw_printf(stderr, "Should be one of: --schema"
                             " --sha3-224 --sha3-256 --sha3-384 --sha3-512\n");
          rc = 1;
          goto meta_command_exit;
        }
      }else if( zLike ){
        raw_printf(stderr, "Usage: .sha3sum ?OPTIONS? ?LIKE-PATTERN?\n");
        rc = 1;
        goto meta_command_exit;
................................................................................
  zSql[nSql+1] = 0;
  rc = sqlite3_complete(zSql);
  zSql[nSql] = 0;
  return rc;
}

/*
** Run a single line of SQL.  Return the number of errors.
*/
static int runOneSqlLine(ShellState *p, char *zSql, FILE *in, int startline){
  int rc;
  char *zErrMsg = 0;

  open_db(p, 0);
  if( ShellHasFlag(p,SHFLG_Backslash) ) resolve_backslashes(zSql);
................................................................................
      seenInterrupt = 0;
    }
    lineno++;
    if( nSql==0 && _all_whitespace(zLine) ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine);
      continue;
    }
    if( zLine && (zLine[0]=='.' || zLine[0]=='#') && nSql==0 ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine);
      if( zLine[0]=='.' ){
        rc = do_meta_command(zLine, p);
        if( rc==2 ){ /* exit requested */
          break;
        }else if( rc ){
          errCnt++;
        }
      }
      continue;
    }
    if( line_is_command_terminator(zLine) && line_is_complete(zSql, nSql) ){
      memcpy(zLine,";",2);
    }
    nLine = strlen30(zLine);
................................................................................
      }
    }else if( nSql && _all_whitespace(zSql) ){
      if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zSql);
      nSql = 0;
    }
  }
  if( nSql && !_all_whitespace(zSql) ){
    errCnt += runOneSqlLine(p, zSql, in, startline);
  }
  free(zSql);
  free(zLine);
  return errCnt>0;
}

/*

Changes to src/sqlite3.c.

1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
....
3135
3136
3137
3138
3139
3140
3141















3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152

3153
3154
3155
3156
3157
3158
3159
3160
....
6532
6533
6534
6535
6536
6537
6538



































6539
6540
6541
6542
6543
6544
6545
....
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
....
8104
8105
8106
8107
8108
8109
8110




























































































































8111
8112
8113
8114
8115
8116
8117
.....
13686
13687
13688
13689
13690
13691
13692
13693
13694
13695
13696
13697
13698
13699
13700
.....
13978
13979
13980
13981
13982
13983
13984
13985
13986


13987
13988
13989
13990
13991













13992
13993
13994
13995
13996
13997
13998
13999
14000
14001
14002
14003
14004
14005
14006
14007
14008
14009
.....
14515
14516
14517
14518
14519
14520
14521
14522












14523
14524
14525
14526
14527
14528
14529
.....
15819
15820
15821
15822
15823
15824
15825

15826
15827
15828
15829
15830
15831
15832
.....
16921
16922
16923
16924
16925
16926
16927
16928
16929
16930
16931
16932
16933
16934
16935
16936
16937
.....
17071
17072
17073
17074
17075
17076
17077
17078
17079
17080
17081
17082
17083
17084
17085
17086
17087
17088
17089
.....
17095
17096
17097
17098
17099
17100
17101
17102
17103
17104
17105
17106
17107
17108
17109
.....
17136
17137
17138
17139
17140
17141
17142
17143
17144
17145
17146
17147
17148
17149
17150
17151
.....
17407
17408
17409
17410
17411
17412
17413
17414
17415
17416
17417
17418
17419
17420
17421
17422
.....
17594
17595
17596
17597
17598
17599
17600
17601
17602
17603
17604
17605
17606
17607
17608
17609
17610
17611
17612
17613
17614
17615
17616
17617
17618
.....
17973
17974
17975
17976
17977
17978
17979
17980
17981
17982
17983
17984
17985
17986
17987
17988
.....
18497
18498
18499
18500
18501
18502
18503
18504
18505
18506
18507
18508
18509
18510
18511
18512
18513
18514
18515
.....
24354
24355
24356
24357
24358
24359
24360
24361
24362
24363
24364
24365
24366
24367
24368
.....
26518
26519
26520
26521
26522
26523
26524
26525
26526
26527
26528
26529
26530
26531
26532
.....
26552
26553
26554
26555
26556
26557
26558
26559
26560
26561
26562
26563
26564
26565
26566
26567
.....
26610
26611
26612
26613
26614
26615
26616
26617
26618
26619
26620
26621
26622
26623
26624
26625
26626
26627
26628
.....
26792
26793
26794
26795
26796
26797
26798
26799
26800
26801
26802
26803
26804
26805
26806
.....
26917
26918
26919
26920
26921
26922
26923
26924
26925
26926
26927
26928
26929
26930
26931
.....
27049
27050
27051
27052
27053
27054
27055
27056
27057
27058
27059
27060
27061
27062
27063
27064
27065
27066
27067
.....
27139
27140
27141
27142
27143
27144
27145
27146
27147
27148
27149
27150
27151
27152
27153
.....
27163
27164
27165
27166
27167
27168
27169
27170
27171
27172
27173
27174
27175
27176
27177
.....
27179
27180
27181
27182
27183
27184
27185
27186
27187
27188
27189
27190
27191
27192
27193
27194
27195
27196
.....
27201
27202
27203
27204
27205
27206
27207
27208
27209
27210
27211
27212
27213
27214
27215
27216
27217
27218
27219
.....
27226
27227
27228
27229
27230
27231
27232
27233
27234
27235
27236
27237
27238
27239
27240
27241
27242
27243
27244
27245
27246
27247
27248
27249
27250
27251
27252
27253
27254
27255
27256
27257
27258
27259
.....
27262
27263
27264
27265
27266
27267
27268
27269
27270
27271
27272
27273
27274
27275
27276
27277
27278
27279
27280
27281
27282
27283
27284
27285
27286
27287
27288
27289
27290
27291
27292
27293
27294
27295
27296
27297
27298
27299
27300
27301
27302
27303
27304
27305
27306
27307
27308
27309
27310
27311
27312
27313
27314
27315
.....
27318
27319
27320
27321
27322
27323
27324
27325
27326
27327
27328
27329
27330
27331
27332
27333
.....
27336
27337
27338
27339
27340
27341
27342
27343
27344
27345
27346
27347
27348
27349
27350
27351
27352
27353
27354
27355
27356
27357






























27358
27359
27360
27361

27362
27363
27364
27365


27366
27367
27368
27369
27370
27371
27372
.....
27385
27386
27387
27388
27389
27390
27391










27392
27393
27394
27395
27396
27397
27398
27399
27400
27401
27402
27403
27404
27405
27406
27407
27408
27409
27410
27411
27412
27413
27414
.....
27438
27439
27440
27441
27442
27443
27444
27445
27446
27447
27448
27449
27450
27451
27452
.....
27483
27484
27485
27486
27487
27488
27489
27490
27491
27492
27493
27494
27495
27496
27497
.....
27505
27506
27507
27508
27509
27510
27511
27512
27513
27514
27515
27516
27517
27518
27519
27520
27521
27522
27523
27524
27525
27526
27527
27528
27529
.....
27544
27545
27546
27547
27548
27549
27550
27551
27552
27553
27554
27555
27556
27557
27558
.....
27561
27562
27563
27564
27565
27566
27567
27568
27569
27570
27571
27572
27573
27574
27575
27576
27577
27578
27579
27580
27581
.....
27633
27634
27635
27636
27637
27638
27639
27640
27641
27642
27643
27644
27645
27646
27647
27648
27649
27650
27651
27652
27653
27654
27655
27656
.....
27676
27677
27678
27679
27680
27681
27682
27683
27684
27685
27686
27687
27688
27689
27690
27691
27692
27693
27694
27695
27696
27697
27698
27699
27700
.....
27716
27717
27718
27719
27720
27721
27722
27723
27724
27725
27726
27727
27728
27729
27730
27731
27732
27733
.....
27751
27752
27753
27754
27755
27756
27757
27758
27759
27760
27761
27762
27763
27764
27765
27766
27767
27768
27769
27770
27771
27772
27773
27774
27775
27776
27777
27778
.....
39691
39692
39693
39694
39695
39696
39697
39698
39699
39700
39701
39702
39703
39704
39705
39706
39707
39708
39709
39710
39711
39712
39713
39714
39715
39716
39717
39718
39719
39720
.....
41303
41304
41305
41306
41307
41308
41309
41310
41311
41312
41313
41314
41315
41316
41317
41318
41319
41320
41321
41322
41323
.....
41325
41326
41327
41328
41329
41330
41331
41332
41333
41334
41335
41336
41337
41338
41339
41340
41341
41342
41343
41344

































41345
41346
41347
41348
41349
41350
41351
.....
64712
64713
64714
64715
64716
64717
64718




64719
64720
64721
64722
64723
64724
64725
.....
64743
64744
64745
64746
64747
64748
64749



64750
64751
64752
64753
64754
64755
64756
.....
67960
67961
67962
67963
67964
67965
67966
67967


67968
67969
67970
67971
67972
67973
67974
.....
69886
69887
69888
69889
69890
69891
69892
























































































69893
69894
69895
69896
69897
69898
69899
.....
69976
69977
69978
69979
69980
69981
69982
69983


69984

69985


69986
69987
69988
69989






69990
69991










69992




69993
69994
69995













69996
69997
69998
69999
70000
70001
70002
70003
70004
70005
70006
70007
70008
70009
70010
70011

















70012
70013
70014
70015
70016
70017
70018
.....
70843
70844
70845
70846
70847
70848
70849
70850
70851
70852
70853
70854
70855
70856
70857
70858
70859
70860
70861
70862
70863
70864
.....
71434
71435
71436
71437
71438
71439
71440
71441
71442
71443
71444
71445
71446
71447
71448
71449
71450
71451
71452
.....
74684
74685
74686
74687
74688
74689
74690











































74691
74692
74693
74694
74695
74696
74697
.....
75644
75645
75646
75647
75648
75649
75650
75651
75652
75653
75654
75655
75656
75657
75658
75659
75660
75661
75662
75663
75664
75665
75666
75667
75668
75669
75670
75671
75672
75673
75674
.....
75692
75693
75694
75695
75696
75697
75698
75699
75700
75701
75702
75703
75704
75705
75706
75707
75708
75709
75710
75711
75712
75713
75714
75715
75716
75717
.....
75724
75725
75726
75727
75728
75729
75730
75731
75732
75733
75734
75735

75736
75737
75738
75739
75740
75741
75742
75743
75744
75745
75746
75747
75748
75749
75750
75751
75752
75753
75754
75755
75756
75757
75758
75759
75760
75761
75762
75763
75764
75765
75766
75767
75768
75769
75770
75771
75772
75773
75774
75775
75776
75777
75778
75779
75780
75781
75782
75783
75784
75785
75786
75787
75788
75789
75790
75791
75792
75793
75794
75795
75796
75797
75798
75799
75800
75801
75802
75803
75804
75805
75806
75807
75808
75809
75810
75811
75812
75813
75814
75815
75816
75817
75818
75819
75820
75821
75822
75823
75824
75825
75826
75827
75828
.....
81227
81228
81229
81230
81231
81232
81233
81234
81235
81236
81237
81238
81239
81240
81241
81242
81243
81244
81245
81246
81247
81248
81249
81250
81251
.....
81263
81264
81265
81266
81267
81268
81269
81270
81271
81272
81273
81274
81275
81276
81277
81278
81279
81280
81281
81282
81283
81284
81285
81286
81287
81288
81289
81290
81291
81292
81293
81294
81295
81296
81297
81298
81299
81300
81301
81302
81303
81304
81305
81306
81307
81308
81309
81310
81311
81312
81313
81314
81315
81316
81317
81318
81319
81320
81321
81322
81323
81324
81325
81326
81327
81328
81329
81330
81331
81332
81333
81334
81335
.....
96620
96621
96622
96623
96624
96625
96626
96627
96628
96629
96630
96631
96632
96633
96634
96635
96636
96637
96638
.....
96856
96857
96858
96859
96860
96861
96862
96863
96864
96865
96866
96867
96868
96869
96870
96871
96872
96873
96874
96875
96876
96877
96878
96879
96880
.....
96987
96988
96989
96990
96991
96992
96993
96994
96995
96996
96997
96998
96999
97000
97001
97002
97003
97004
97005
97006
97007
97008
97009
97010
97011
97012
.....
97761
97762
97763
97764
97765
97766
97767

97768
97769
97770
97771
97772
97773
97774
.....
98221
98222
98223
98224
98225
98226
98227
98228

98229
98230
98231
98232
98233
98234
98235
......
106425
106426
106427
106428
106429
106430
106431



106432

106433
106434
106435
106436
106437
106438
106439
......
107604
107605
107606
107607
107608
107609
107610
107611
107612
107613
107614
107615
107616
107617
107618
107619
107620
107621
107622
107623
107624
107625
107626
107627
......
109583
109584
109585
109586
109587
109588
109589
109590
109591
109592
109593
109594
109595
109596
109597
......
110986
110987
110988
110989
110990
110991
110992
110993
110994
110995
110996
110997
110998
110999
111000
111001
111002
111003
111004
111005
111006
111007
111008
111009
111010
111011
111012
111013
......
115561
115562
115563
115564
115565
115566
115567















115568
115569
115570
115571
115572
115573
115574
......
115831
115832
115833
115834
115835
115836
115837















115838
115839
115840
115841
115842
115843
115844
......
116269
116270
116271
116272
116273
116274
116275
116276















116277
116278
116279
116280
116281
116282
116283
......
116335
116336
116337
116338
116339
116340
116341
116342
116343
116344
116345
116346
116347
116348
116349
116350
116351
116352
......
119510
119511
119512
119513
119514
119515
119516
119517
119518
119519
119520
119521
119522
119523
119524
119525
119526
119527
119528
119529
119530
119531
119532
119533
119534
119535
119536
119537
119538
119539
119540
119541
119542
119543
......
119681
119682
119683
119684
119685
119686
119687
119688
119689
119690
119691
119692
119693
119694
119695
119696
119697
119698
119699
119700
119701
......
120000
120001
120002
120003
120004
120005
120006



120007
120008
120009
120010
120011
120012
120013
......
120398
120399
120400
120401
120402
120403
120404
120405
120406
120407
120408
120409
120410
120411
120412
......
120712
120713
120714
120715
120716
120717
120718
120719
120720
120721
120722
120723
120724
120725
120726
......
120769
120770
120771
120772
120773
120774
120775

120776
120777
120778
120779
120780
120781
120782
......
121226
121227
121228
121229
121230
121231
121232
























































121233
121234
121235
121236
121237
121238
121239
121240
121241
121242
121243
121244
121245
121246
121247
121248
121249
121250
121251
121252
121253
121254
121255

121256
121257














121258

121259
121260
121261
121262
121263
121264
121265
121266
121267
121268
......
121278
121279
121280
121281
121282
121283
121284
121285
121286
121287
121288
121289
121290
121291
121292
......
121329
121330
121331
121332
121333
121334
121335
121336
121337
121338
121339
121340
121341

121342
121343
121344
121345
121346
121347
121348
121349
121350
121351
121352
121353
121354





121355
121356
121357
121358
121359
121360
121361
......
121433
121434
121435
121436
121437
121438
121439
121440
121441
121442
121443
121444
121445
121446
121447
121448
121449
......
121502
121503
121504
121505
121506
121507
121508

121509
121510
121511
121512
121513
121514
121515
......
121554
121555
121556
121557
121558
121559
121560
121561

121562
121563
121564
121565
121566
121567
121568
121569
121570
121571
121572
121573
121574

121575
121576
121577
121578
121579
121580
121581
......
121588
121589
121590
121591
121592
121593
121594











121595








121596
121597
121598
121599

121600
121601


121602
121603
121604




121605
121606






121607
121608
121609
121610
121611
121612
121613
121614
121615
......
121717
121718
121719
121720
121721
121722
121723

121724
121725
121726
121727
121728
121729
121730
121731
......
121984
121985
121986
121987
121988
121989
121990
121991
121992
121993
121994
121995
121996
121997
121998
121999
122000
122001
122002
......
122006
122007
122008
122009
122010
122011
122012
122013
122014
122015
122016
122017
122018
122019
122020
122021
122022
122023
122024
122025
122026
122027
122028
122029
122030
122031
122032
122033
122034
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122037
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122044
122045
122046
122047
122048
122049
122050
122051
122052
122053
122054
122055
......
122491
122492
122493
122494
122495
122496
122497
122498
122499
122500
122501
122502
122503
122504
122505
......
123018
123019
123020
123021
123022
123023
123024

123025
123026
123027
123028
123029
123030
123031
......
123052
123053
123054
123055
123056
123057
123058

123059
123060
123061
123062
123063
123064
123065
......
123097
123098
123099
123100
123101
123102
123103
123104
123105
123106
123107

123108
123109
123110
123111
123112
123113
123114
123115
123116
123117


123118
123119
123120
123121
123122
123123
123124
123125
123126
123127
123128
123129
123130
......
123165
123166
123167
123168
123169
123170
123171
123172
123173
123174
123175
123176
123177
123178
123179
123180
123181
123182
......
123219
123220
123221
123222
123223
123224
123225
123226
123227







123228
123229
123230
123231
123232
123233
123234
123235
123236
123237
123238
123239
123240
123241
123242
123243
123244
123245
123246
123247
123248
123249
123250
123251
123252
123253
123254
123255

123256
123257
123258
123259
123260
123261
123262
123263
123264
123265
123266
123267
123268
123269
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123271
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123285
123286
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123291
123292
123293
123294
123295
123296
123297
123298
123299
123300
123301
123302
123303
123304
123305
123306
123307
123308
123309
123310
123311
123312
123313
123314
123315
123316
123317
123318
123319
123320
123321
123322
123323
123324
123325


123326
123327
123328
123329
123330
123331
123332
123333
123334
123335
123336
123337
123338
123339
123340
123341
123342
123343
123344
123345
123346
123347
123348
123349
123350
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123353
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123355
123356
123357
123358
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123360
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123368
123369
123370
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123372
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123374
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123380
123381
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123384
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123386
123387
123388
123389
123390
123391
123392
123393
123394
123395
123396
123397
123398
123399
123400
123401
123402
123403


123404
123405
123406
123407
123408


123409
123410
123411
123412
123413
123414
123415
123416
123417
123418
123419
123420
123421
123422

123423
123424
123425
123426
123427
123428
123429
123430
123431
123432
123433
123434
123435



123436



123437
123438
123439
123440
123441
123442
123443
......
123767
123768
123769
123770
123771
123772
123773
123774
123775
123776
123777
123778
123779
123780
123781
123782
123783
123784
......
123890
123891
123892
123893
123894
123895
123896


123897
123898
123899
123900
123901
123902
123903
123904
123905
123906
123907
123908
123909
123910
123911
......
123912
123913
123914
123915
123916
123917
123918
123919
123920
123921
123922
123923
123924
123925
123926
......
124024
124025
124026
124027
124028
124029
124030
124031
124032
124033
124034
124035
124036
124037
124038
......
125812
125813
125814
125815
125816
125817
125818
125819
125820
125821
125822
125823
125824
125825
125826
125827
125828
125829
125830
125831
125832
125833
......
126032
126033
126034
126035
126036
126037
126038
126039
126040
126041
126042
126043
126044

126045
126046
126047
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126050
126051
126052
126053
126054
126055
126056
126057
126058
126059
126060
126061
......
126084
126085
126086
126087
126088
126089
126090
126091
126092
126093
126094
126095
126096
126097
126098
126099
126100
126101
......
126182
126183
126184
126185
126186
126187
126188
126189
126190
126191
126192
126193
126194
126195
126196
126197
126198
126199
126200
......
126298
126299
126300
126301
126302
126303
126304
126305
126306
126307
126308
126309
126310
126311
126312
......
126333
126334
126335
126336
126337
126338
126339
126340
126341
126342
126343
126344
126345
126346
126347
126348
126349
126350
126351
126352
......
126976
126977
126978
126979
126980
126981
126982
126983
126984
126985
126986
126987
126988
126989
126990
126991
126992
126993
126994
......
129572
129573
129574
129575
129576
129577
129578
129579




129580


129581
129582
129583
129584
129585
129586
129587
......
129786
129787
129788
129789
129790
129791
129792
129793
129794
129795
129796
129797
129798
129799
129800
......
131642
131643
131644
131645
131646
131647
131648
131649
131650
131651
131652
131653
131654
131655
131656
131657
131658
131659
131660
131661
......
131767
131768
131769
131770
131771
131772
131773
131774
131775
131776
131777
131778
131779
131780
131781
131782
131783
131784
131785
131786
131787
131788
131789
131790
131791
131792
131793
131794
131795
131796
131797
......
131807
131808
131809
131810
131811
131812
131813
131814
131815
131816
131817
131818
131819
131820
131821
131822
131823
131824
131825
131826
131827
131828
131829
131830
131831
131832
131833
131834
131835
131836
......
131838
131839
131840
131841
131842
131843
131844
131845
131846
131847
131848
131849
131850
131851
131852
131853
131854
131855
131856
131857
131858
131859
131860
131861
131862
131863
131864
......
131867
131868
131869
131870
131871
131872
131873
131874
131875
131876
131877
131878
131879
131880
131881
131882
131883
131884
131885
131886
131887
131888
131889
......
131898
131899
131900
131901
131902
131903
131904
131905
131906
131907
131908
131909
131910
131911
131912
131913
......
131914
131915
131916
131917
131918
131919
131920

131921
131922
131923
131924
131925
131926
131927
131928
131929
131930

131931
131932
131933
131934
131935
131936
131937

131938
131939
131940
131941
131942
131943
131944
......
133650
133651
133652
133653
133654
133655
133656

133657
133658
133659
133660
133661
133662
133663
......
133671
133672
133673
133674
133675
133676
133677
133678
133679
133680
133681
133682
133683
133684
133685
......
133770
133771
133772
133773
133774
133775
133776

133777
133778
133779
133780
133781
133782
133783
......
140077
140078
140079
140080
140081
140082
140083

140084
140085
140086
140087
140088
140089
140090
......
140472
140473
140474
140475
140476
140477
140478
140479
140480
140481
140482
140483
140484
140485
140486
......
146937
146938
146939
146940
146941
146942
146943

146944
146945
146946
146947
146948
146949
146950
......
151830
151831
151832
151833
151834
151835
151836
151837
151838
151839
151840
151841
151842
151843
151844
......
155540
155541
155542
155543
155544
155545
155546
155547
155548
155549
155550
155551
155552
155553
155554
......
159200
159201
159202
159203
159204
159205
159206
159207
159208
159209
159210
159211
159212
159213
159214
159215
159216
159217
159218
159219
159220
159221
159222
159223
159224
159225
159226
159227
159228
159229
159230
159231
159232
159233
159234
159235
159236
159237
159238
159239
159240
159241
......
159295
159296
159297
159298
159299
159300
159301
159302

159303
159304
159305
159306
159307
159308
159309
159310
159311
159312
159313
159314
159315
159316
159317


159318
159319
159320
159321
159322
159323
159324
159325
159326
159327


159328
159329
159330
159331
159332
159333
159334


159335
159336
159337
159338
159339
159340
159341
159342
159343
159344
159345
159346
159347
159348
159349
159350
159351
159352
159353
159354
159355
159356
159357
159358
159359
159360
159361
159362
159363
......
159375
159376
159377
159378
159379
159380
159381
159382
159383
159384
159385
159386















159387
159388
159389
159390
159391
159392
159393
159394
159395
159396
159397
159398
159399
159400
159401
159402
159403
159404
159405
......
175648
175649
175650
175651
175652
175653
175654




175655
175656
175657
175658
175659
175660
175661
175662
175663
175664

175665
175666
175667
175668
175669
175670
175671
......
175700
175701
175702
175703
175704
175705
175706

175707
175708
175709
175710
175711
175712
175713
......
177763
177764
177765
177766
177767
177768
177769

177770
177771
177772
177773
177774
177775
177776
......
177832
177833
177834
177835
177836
177837
177838




177839
177840
177841
177842
177843
177844
177845
......
178607
178608
178609
178610
178611
178612
178613
178614

178615
178616
178617
178618
178619
178620
178621
178622
178623
178624

178625
178626
178627
178628
178629
178630
178631
......
178873
178874
178875
178876
178877
178878
178879
178880

178881
178882
178883
178884
178885
178886
178887
......
206723
206724
206725
206726
206727
206728
206729
206730
206731
206732
206733
206734
206735
206736
206737
......
210993
210994
210995
210996
210997
210998
210999
211000
211001
211002
211003
211004
211005
211006
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.24.0"
#define SQLITE_VERSION_NUMBER 3024000
#define SQLITE_SOURCE_ID      "2018-04-26 18:34:26 9fd0faf517993587d2f54212638545fc85fbbc84a031bcfae8c1e5894825d83b"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** behavior. The first parameter passed to this operation is an integer -
** positive to enable output for trigger programs, or zero to disable it,
** or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which is written 
** 0 or 1 to indicate whether output-for-triggers has been disabled - 0 if 
** it is not disabled, 1 if it is.  
** </dd>















** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */

#define SQLITE_DBCONFIG_MAX                   1008 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
** made NULL or made to point to memory obtained from [sqlite3_malloc]
** or else the use of the [data_store_directory pragma] should be avoided.
*/
SQLITE_API char *sqlite3_data_directory;




































/*
** CAPI3REF: Test For Auto-Commit Mode
** KEYWORDS: {autocommit mode}
** METHOD: sqlite3
**
** ^The sqlite3_get_autocommit() interface returns non-zero or
** zero if the given database connection is or is not in autocommit mode,
................................................................................
** parsing ambiguity.  For example, the statement
** "CREATE TABLE BEGIN(REPLACE,PRAGMA,END);" is accepted by SQLite, and
** creates a new table named "BEGIN" with three columns named
** "REPLACE", "PRAGMA", and "END".  Nevertheless, best practice is to avoid
** using keywords as identifiers.  Common techniques used to avoid keyword
** name collisions include:
** <ul>
** <li> Put all indentifier names inside double-quotes.  This is the official
**      SQL way to escape identifier names.
** <li> Put identifier names inside &#91;...&#93;.  This is not standard SQL,
**      but it is what SQL Server does and so lots of programmers use this
**      technique.
** <li> Begin every identifier with the letter "Z" as no SQL keywords start
**      with "Z".
** <li> Include a digit somewhere in every identifier name.
................................................................................
** SQLite is compiled with the [-DSQLITE_OMIT_VACUUM] option.  Also,
** new keywords may be added to future releases of SQLite.
*/
SQLITE_API int sqlite3_keyword_count(void);
SQLITE_API int sqlite3_keyword_name(int,const char**,int*);
SQLITE_API int sqlite3_keyword_check(const char*,int);





























































































































/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes
................................................................................
typedef struct PrintfArguments PrintfArguments;
typedef struct RowSet RowSet;
typedef struct Savepoint Savepoint;
typedef struct Select Select;
typedef struct SQLiteThread SQLiteThread;
typedef struct SelectDest SelectDest;
typedef struct SrcList SrcList;
typedef struct StrAccum StrAccum;
typedef struct Table Table;
typedef struct TableLock TableLock;
typedef struct Token Token;
typedef struct TreeView TreeView;
typedef struct Trigger Trigger;
typedef struct TriggerPrg TriggerPrg;
typedef struct TriggerStep TriggerStep;
................................................................................
#define BTREE_AUXDELETE    0x04  /* not the primary delete operation */
#define BTREE_APPEND       0x08  /* Insert is likely an append */

/* An instance of the BtreePayload object describes the content of a single
** entry in either an index or table btree.
**
** Index btrees (used for indexes and also WITHOUT ROWID tables) contain
** an arbitrary key and no data.  These btrees have pKey,nKey set to their
** key and pData,nData,nZero set to zero.


**
** Table btrees (used for rowid tables) contain an integer rowid used as
** the key and passed in the nKey field.  The pKey field is zero.  
** pData,nData hold the content of the new entry.  nZero extra zero bytes
** are appended to the end of the content when constructing the entry.













**
** This object is used to pass information into sqlite3BtreeInsert().  The
** same information used to be passed as five separate parameters.  But placing
** the information into this object helps to keep the interface more 
** organized and understandable, and it also helps the resulting code to
** run a little faster by using fewer registers for parameter passing.
*/
struct BtreePayload {
  const void *pKey;       /* Key content for indexes.  NULL for tables */
  sqlite3_int64 nKey;     /* Size of pKey for indexes.  PRIMARY KEY for tabs */
  const void *pData;      /* Data for tables.  NULL for indexes */
  sqlite3_value *aMem;    /* First of nMem value in the unpacked pKey */
  u16 nMem;               /* Number of aMem[] value.  Might be zero */
  int nData;              /* Size of pData.  0 if none. */
  int nZero;              /* Extra zero data appended after pData,nData */
};

SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const BtreePayload *pPayload,
................................................................................
#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS)
SQLITE_PRIVATE   void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N);
SQLITE_PRIVATE   void sqlite3VdbeVerifyNoResultRow(Vdbe *p);
#else
# define sqlite3VdbeVerifyNoMallocRequired(A,B)
# define sqlite3VdbeVerifyNoResultRow(A)
#endif
SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno);












SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
................................................................................
#define SQLITE_EnableTrigger  0x00040000  /* True to enable triggers */
#define SQLITE_DeferFKs       0x00080000  /* Defer all FK constraints */
#define SQLITE_QueryOnly      0x00100000  /* Disable database changes */
#define SQLITE_CellSizeCk     0x00200000  /* Check btree cell sizes on load */
#define SQLITE_Fts3Tokenizer  0x00400000  /* Enable fts3_tokenizer(2) */
#define SQLITE_EnableQPSG     0x00800000  /* Query Planner Stability Guarantee*/
#define SQLITE_TriggerEQP     0x01000000  /* Show trigger EXPLAIN QUERY PLAN */


/* Flags used only if debugging */
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       0x08000000  /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    0x10000000  /* Debug listings of VDBE programs */
#define SQLITE_VdbeTrace      0x20000000  /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace 0x40000000  /* Trace sqlite3VdbeAddOp() calls */
................................................................................
      unsigned notIndexed :1;    /* True if there is a NOT INDEXED clause */
      unsigned isIndexedBy :1;   /* True if there is an INDEXED BY clause */
      unsigned isTabFunc :1;     /* True if table-valued-function syntax */
      unsigned isCorrelated :1;  /* True if sub-query is correlated */
      unsigned viaCoroutine :1;  /* Implemented as a co-routine */
      unsigned isRecursive :1;   /* True for recursive reference in WITH */
    } fg;
#ifndef SQLITE_OMIT_EXPLAIN
    u8 iSelectId;     /* If pSelect!=0, the id of the sub-select in EQP */
#endif
    int iCursor;      /* The VDBE cursor number used to access this table */
    Expr *pOn;        /* The ON clause of a join */
    IdList *pUsing;   /* The USING clause of a join */
    Bitmask colUsed;  /* Bit N (1<<N) set if column N of pTab is used */
    union {
      char *zIndexedBy;    /* Identifier from "INDEXED BY <zIndex>" clause */
      ExprList *pFuncArg;  /* Arguments to table-valued-function */
................................................................................
  int iIdxCur;              /* Index of the first index cursor */
};

/*
** An instance of the following structure contains all information
** needed to generate code for a single SELECT statement.
**
** nLimit is set to -1 if there is no LIMIT clause.  nOffset is set to 0.
** If there is a LIMIT clause, the parser sets nLimit to the value of the
** limit and nOffset to the value of the offset (or 0 if there is not
** offset).  But later on, nLimit and nOffset become the memory locations
** in the VDBE that record the limit and offset counters.
**
** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
** These addresses must be stored so that we can go back and fill in
** the P4_KEYINFO and P2 parameters later.  Neither the KeyInfo nor
** the number of columns in P2 can be computed at the same time
** as the OP_OpenEphm instruction is coded because not
** enough information about the compound query is known at that point.
................................................................................
  ExprList *pEList;      /* The fields of the result */
  u8 op;                 /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
  LogEst nSelectRow;     /* Estimated number of result rows */
  u32 selFlags;          /* Various SF_* values */
  int iLimit, iOffset;   /* Memory registers holding LIMIT & OFFSET counters */
#if SELECTTRACE_ENABLED
  char zSelName[12];     /* Symbolic name of this SELECT use for debugging */
  u32 iSelectId;         /* EXPLAIN QUERY PLAN select ID */
#endif
  int addrOpenEphm[2];   /* OP_OpenEphem opcodes related to this select */
  SrcList *pSrc;         /* The FROM clause */
  Expr *pWhere;          /* The WHERE clause */
  ExprList *pGroupBy;    /* The GROUP BY clause */
  Expr *pHaving;         /* The HAVING clause */
  ExprList *pOrderBy;    /* The ORDER BY clause */
................................................................................
#define SF_NestedFrom     0x00800  /* Part of a parenthesized FROM clause */
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
#define SF_ComplexResult  0x40000  /* Result set contains subquery or function */


/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
**     SRT_Union       Store results as a key in a temporary index
................................................................................
  u8 explain;               /* True if the EXPLAIN flag is found on the query */
#ifndef SQLITE_OMIT_VIRTUALTABLE
  u8 declareVtab;           /* True if inside sqlite3_declare_vtab() */
  int nVtabLock;            /* Number of virtual tables to lock */
#endif
  int nHeight;              /* Expression tree height of current sub-select */
#ifndef SQLITE_OMIT_EXPLAIN
  int iSelectId;            /* ID of current select for EXPLAIN output */
  int iNextSelectId;        /* Next available select ID for EXPLAIN output */
#endif
  VList *pVList;            /* Mapping between variable names and numbers */
  Vdbe *pReprepare;         /* VM being reprepared (sqlite3Reprepare()) */
  const char *zTail;        /* All SQL text past the last semicolon parsed */
  Table *pNewTable;         /* A table being constructed by CREATE TABLE */
  Trigger *pNewTrigger;     /* Trigger under construct by a CREATE TRIGGER */
  const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
................................................................................
  const Token *pName; /* Name of the container - used for error messages */
};

/*
** An objected used to accumulate the text of a string where we
** do not necessarily know how big the string will be in the end.
*/
struct StrAccum {
  sqlite3 *db;         /* Optional database for lookaside.  Can be NULL */
  char *zText;         /* The string collected so far */
  u32  nAlloc;         /* Amount of space allocated in zText */
  u32  mxAlloc;        /* Maximum allowed allocation.  0 for no malloc usage */
  u32  nChar;          /* Length of the string so far */
  u8   accError;       /* STRACCUM_NOMEM or STRACCUM_TOOBIG */
  u8   printfFlags;    /* SQLITE_PRINTF flags below */
};
#define STRACCUM_NOMEM   1
#define STRACCUM_TOOBIG  2
#define SQLITE_PRINTF_INTERNAL 0x01  /* Internal-use-only converters allowed */
#define SQLITE_PRINTF_SQLFUNC  0x02  /* SQL function arguments to VXPrintf */
#define SQLITE_PRINTF_MALLOCED 0x04  /* True if xText is allocated space */

#define isMalloced(X)  (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0)


................................................................................
*/
struct PrintfArguments {
  int nArg;                /* Total number of arguments */
  int nUsed;               /* Number of arguments used so far */
  sqlite3_value **apArg;   /* The argument values */
};

SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, const char*, va_list);
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum*, const char*, ...);
SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...);
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
SQLITE_PRIVATE   void sqlite3DebugPrintf(const char*, ...);
#endif
#if defined(SQLITE_TEST)
SQLITE_PRIVATE   void *sqlite3TestTextToPtr(const char*);
................................................................................
);
SQLITE_PRIVATE void sqlite3OomFault(sqlite3*);
SQLITE_PRIVATE void sqlite3OomClear(sqlite3*);
SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int);
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int);
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum*,const char*,int);
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum*,const char*);
SQLITE_PRIVATE void sqlite3AppendChar(StrAccum*,int,char);
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum*);
SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);

SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *);
SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);

#ifndef SQLITE_OMIT_SUBQUERY
................................................................................
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
}
#endif

#endif /* !defined(SQLITE_MUTEX_OMIT) */


/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
/*
** 2008 October 07
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
................................................................................
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

/*
** Set the StrAccum object to an error mode.
*/
static void setStrAccumError(StrAccum *p, u8 eError){
  assert( eError==STRACCUM_NOMEM || eError==STRACCUM_TOOBIG );
  p->accError = eError;
  p->nAlloc = 0;
}

/*
** Extra argument values from a PrintfArguments object
*/
................................................................................
# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE  /* Size of the output buffer */

/*
** Render a string given by "fmt" into the StrAccum object.
*/
SQLITE_PRIVATE void sqlite3VXPrintf(
  StrAccum *pAccum,          /* Accumulate results here */
  const char *fmt,           /* Format string */
  va_list ap                 /* arguments */
){
  int c;                     /* Next character in the format string */
  char *bufpt;               /* Pointer to the conversion buffer */
  int precision;             /* Precision of the current field */
  int length;                /* Length of the field */
................................................................................
    if( c!='%' ){
      bufpt = (char *)fmt;
#if HAVE_STRCHRNUL
      fmt = strchrnul(fmt, '%');
#else
      do{ fmt++; }while( *fmt && *fmt != '%' );
#endif
      sqlite3StrAccumAppend(pAccum, bufpt, (int)(fmt - bufpt));
      if( *fmt==0 ) break;
    }
    if( (c=(*++fmt))==0 ){
      sqlite3StrAccumAppend(pAccum, "%", 1);
      break;
    }
    /* Find out what flags are present */
    flag_leftjustify = flag_prefix = cThousand =
     flag_alternateform = flag_altform2 = flag_zeropad = 0;
    done = 0;
    do{
................................................................................
        if( precision<etBUFSIZE-10-etBUFSIZE/3 ){
          nOut = etBUFSIZE;
          zOut = buf;
        }else{
          u64 n = (u64)precision + 10 + precision/3;
          zOut = zExtra = sqlite3Malloc( n );
          if( zOut==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
          nOut = (int)n;
        }
        bufpt = &zOut[nOut-1];
        if( xtype==etORDINAL ){
          static const char zOrd[] = "thstndrd";
................................................................................
        }else{
          e2 = exp;
        }
        if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){
          bufpt = zExtra 
              = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 );
          if( bufpt==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
        }
        zOut = bufpt;
        nsd = 16 + flag_altform2*10;
        flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
        /* The sign in front of the number */
................................................................................
            buf[3] = 0x80 + (u8)(ch & 0x3f);
            length = 4;
          }
        }
        if( precision>1 ){
          width -= precision-1;
          if( width>1 && !flag_leftjustify ){
            sqlite3AppendChar(pAccum, width-1, ' ');
            width = 0;
          }
          while( precision-- > 1 ){
            sqlite3StrAccumAppend(pAccum, buf, length);
          }
        }
        bufpt = buf;
        flag_altform2 = 1;
        goto adjust_width_for_utf8;
      case etSTRING:
      case etDYNSTRING:
................................................................................
          }
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 3;
        if( n>etBUFSIZE ){
          bufpt = zExtra = sqlite3Malloc( n );
          if( bufpt==0 ){
            setStrAccumError(pAccum, STRACCUM_NOMEM);
            return;
          }
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = q;
................................................................................
      }
      case etTOKEN: {
        Token *pToken;
        if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return;
        pToken = va_arg(ap, Token*);
        assert( bArgList==0 );
        if( pToken && pToken->n ){
          sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n);
        }
        length = width = 0;
        break;
      }
      case etSRCLIST: {
        SrcList *pSrc;
        int k;
................................................................................
        if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return;
        pSrc = va_arg(ap, SrcList*);
        k = va_arg(ap, int);
        pItem = &pSrc->a[k];
        assert( bArgList==0 );
        assert( k>=0 && k<pSrc->nSrc );
        if( pItem->zDatabase ){
          sqlite3StrAccumAppendAll(pAccum, pItem->zDatabase);
          sqlite3StrAccumAppend(pAccum, ".", 1);
        }
        sqlite3StrAccumAppendAll(pAccum, pItem->zName);
        length = width = 0;
        break;
      }
      default: {
        assert( xtype==etINVALID );
        return;
      }
................................................................................
    ** the output.  Both length and width are in bytes, not characters,
    ** at this point.  If the "!" flag was present on string conversions
    ** indicating that width and precision should be expressed in characters,
    ** then the values have been translated prior to reaching this point.
    */
    width -= length;
    if( width>0 ){
      if( !flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' ');
      sqlite3StrAccumAppend(pAccum, bufpt, length);
      if( flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' ');
    }else{
      sqlite3StrAccumAppend(pAccum, bufpt, length);
    }

    if( zExtra ){
      sqlite3DbFree(pAccum->db, zExtra);
      zExtra = 0;
    }
  }/* End for loop over the format string */
................................................................................
** Return the number of bytes of text that StrAccum is able to accept
** after the attempted enlargement.  The value returned might be zero.
*/
static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
  char *zNew;
  assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */
  if( p->accError ){
    testcase(p->accError==STRACCUM_TOOBIG);
    testcase(p->accError==STRACCUM_NOMEM);
    return 0;
  }
  if( p->mxAlloc==0 ){
    N = p->nAlloc - p->nChar - 1;
    setStrAccumError(p, STRACCUM_TOOBIG);
    return N;
  }else{
    char *zOld = isMalloced(p) ? p->zText : 0;
    i64 szNew = p->nChar;
    szNew += N + 1;
    if( szNew+p->nChar<=p->mxAlloc ){
      /* Force exponential buffer size growth as long as it does not overflow,
      ** to avoid having to call this routine too often */
      szNew += p->nChar;
    }
    if( szNew > p->mxAlloc ){
      sqlite3StrAccumReset(p);
      setStrAccumError(p, STRACCUM_TOOBIG);
      return 0;
    }else{
      p->nAlloc = (int)szNew;
    }
    if( p->db ){
      zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
    }else{
................................................................................
    if( zNew ){
      assert( p->zText!=0 || p->nChar==0 );
      if( !isMalloced(p) && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
      p->zText = zNew;
      p->nAlloc = sqlite3DbMallocSize(p->db, zNew);
      p->printfFlags |= SQLITE_PRINTF_MALLOCED;
    }else{
      sqlite3StrAccumReset(p);
      setStrAccumError(p, STRACCUM_NOMEM);
      return 0;
    }
  }
  return N;
}

/*
** Append N copies of character c to the given string buffer.
*/
SQLITE_PRIVATE void sqlite3AppendChar(StrAccum *p, int N, char c){
  testcase( p->nChar + (i64)N > 0x7fffffff );
  if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){
    return;
  }
  while( (N--)>0 ) p->zText[p->nChar++] = c;
}

/*
** The StrAccum "p" is not large enough to accept N new bytes of z[].
** So enlarge if first, then do the append.
**
** This is a helper routine to sqlite3StrAccumAppend() that does special-case
** work (enlarging the buffer) using tail recursion, so that the
** sqlite3StrAccumAppend() routine can use fast calling semantics.
*/
static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){
  N = sqlite3StrAccumEnlarge(p, N);
  if( N>0 ){
    memcpy(&p->zText[p->nChar], z, N);
    p->nChar += N;
  }
}

/*
** Append N bytes of text from z to the StrAccum object.  Increase the
** size of the memory allocation for StrAccum if necessary.
*/
SQLITE_PRIVATE void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
  assert( z!=0 || N==0 );
  assert( p->zText!=0 || p->nChar==0 || p->accError );
  assert( N>=0 );
  assert( p->accError==0 || p->nAlloc==0 );
  if( p->nChar+N >= p->nAlloc ){
    enlargeAndAppend(p,z,N);
  }else if( N ){
................................................................................
    memcpy(&p->zText[p->nChar-N], z, N);
  }
}

/*
** Append the complete text of zero-terminated string z[] to the p string.
*/
SQLITE_PRIVATE void sqlite3StrAccumAppendAll(StrAccum *p, const char *z){
  sqlite3StrAccumAppend(p, z, sqlite3Strlen30(z));
}


/*
** Finish off a string by making sure it is zero-terminated.
** Return a pointer to the resulting string.  Return a NULL
** pointer if any kind of error was encountered.
................................................................................
  char *zText;
  assert( p->mxAlloc>0 && !isMalloced(p) );
  zText = sqlite3DbMallocRaw(p->db, p->nChar+1 );
  if( zText ){
    memcpy(zText, p->zText, p->nChar+1);
    p->printfFlags |= SQLITE_PRINTF_MALLOCED;
  }else{
    setStrAccumError(p, STRACCUM_NOMEM);
  }
  p->zText = zText;
  return zText;
}
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){
  if( p->zText ){
    p->zText[p->nChar] = 0;
    if( p->mxAlloc>0 && !isMalloced(p) ){
      return strAccumFinishRealloc(p);
    }
  }
  return p->zText;
}































/*
** Reset an StrAccum string.  Reclaim all malloced memory.
*/
SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum *p){

  if( isMalloced(p) ){
    sqlite3DbFree(p->db, p->zText);
    p->printfFlags &= ~SQLITE_PRINTF_MALLOCED;
  }


  p->zText = 0;
}

/*
** Initialize a string accumulator.
**
** p:     The accumulator to be initialized.
................................................................................
  p->db = db;
  p->nAlloc = n;
  p->mxAlloc = mx;
  p->nChar = 0;
  p->accError = 0;
  p->printfFlags = 0;
}











/*
** Print into memory obtained from sqliteMalloc().  Use the internal
** %-conversion extensions.
*/
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){
  char *z;
  char zBase[SQLITE_PRINT_BUF_SIZE];
  StrAccum acc;
  assert( db!=0 );
  sqlite3StrAccumInit(&acc, db, zBase, sizeof(zBase),
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  acc.printfFlags = SQLITE_PRINTF_INTERNAL;
  sqlite3VXPrintf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  if( acc.accError==STRACCUM_NOMEM ){
    sqlite3OomFault(db);
  }
  return z;
}

/*
** Print into memory obtained from sqliteMalloc().  Use the internal
................................................................................
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  sqlite3StrAccumInit(&acc, 0, zBase, sizeof(zBase), SQLITE_MAX_LENGTH);
  sqlite3VXPrintf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  return z;
}

/*
** Print into memory obtained from sqlite3_malloc()().  Omit the internal
** %-conversion extensions.
................................................................................
  if( zBuf==0 || zFormat==0 ) {
    (void)SQLITE_MISUSE_BKPT;
    if( zBuf ) zBuf[0] = 0;
    return zBuf;
  }
#endif
  sqlite3StrAccumInit(&acc, 0, zBuf, n, 0);
  sqlite3VXPrintf(&acc, zFormat, ap);
  zBuf[acc.nChar] = 0;
  return zBuf;
}
SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
  char *z;
  va_list ap;
  va_start(ap,zFormat);
................................................................................
** We house it in a separate routine from sqlite3_log() to avoid using
** stack space on small-stack systems when logging is disabled.
**
** sqlite3_log() must render into a static buffer.  It cannot dynamically
** allocate memory because it might be called while the memory allocator
** mutex is held.
**
** sqlite3VXPrintf() might ask for *temporary* memory allocations for
** certain format characters (%q) or for very large precisions or widths.
** Care must be taken that any sqlite3_log() calls that occur while the
** memory mutex is held do not use these mechanisms.
*/
static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){
  StrAccum acc;                          /* String accumulator */
  char zMsg[SQLITE_PRINT_BUF_SIZE*3];    /* Complete log message */

  sqlite3StrAccumInit(&acc, 0, zMsg, sizeof(zMsg), 0);
  sqlite3VXPrintf(&acc, zFormat, ap);
  sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode,
                           sqlite3StrAccumFinish(&acc));
}

/*
** Format and write a message to the log if logging is enabled.
*/
................................................................................
*/
SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){
  va_list ap;
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  va_start(ap,zFormat);
  sqlite3VXPrintf(&acc, zFormat, ap);
  va_end(ap);
  sqlite3StrAccumFinish(&acc);
#ifdef SQLITE_OS_TRACE_PROC
  {
    extern void SQLITE_OS_TRACE_PROC(const char *zBuf, int nBuf);
    SQLITE_OS_TRACE_PROC(zBuf, sizeof(zBuf));
  }
................................................................................
  fflush(stdout);
#endif
}
#endif


/*
** variable-argument wrapper around sqlite3VXPrintf().  The bFlags argument
** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats.
*/
SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, const char *zFormat, ...){
  va_list ap;
  va_start(ap,zFormat);
  sqlite3VXPrintf(p, zFormat, ap);
  va_end(ap);
}

/************** End of printf.c **********************************************/
/************** Begin file treeview.c ****************************************/
/*
** 2015-06-08
................................................................................
  va_list ap;
  int i;
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  if( p ){
    for(i=0; i<p->iLevel && i<sizeof(p->bLine)-1; i++){
      sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|   " : "    ", 4);
    }
    sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|-- " : "'-- ", 4);
  }
  if( zFormat!=0 ){
    va_start(ap, zFormat);
    sqlite3VXPrintf(&acc, zFormat, ap);
    va_end(ap);
    assert( acc.nChar>0 );
    sqlite3StrAccumAppend(&acc, "\n", 1);
  }
  sqlite3StrAccumFinish(&acc);
  fprintf(stdout,"%s", zBuf);
  fflush(stdout);
}

/*
................................................................................
  if( pWith->nCte>0 ){
    pView = sqlite3TreeViewPush(pView, 1);
    for(i=0; i<pWith->nCte; i++){
      StrAccum x;
      char zLine[1000];
      const struct Cte *pCte = &pWith->a[i];
      sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
      sqlite3XPrintf(&x, "%s", pCte->zName);
      if( pCte->pCols && pCte->pCols->nExpr>0 ){
        char cSep = '(';
        int j;
        for(j=0; j<pCte->pCols->nExpr; j++){
          sqlite3XPrintf(&x, "%c%s", cSep, pCte->pCols->a[j].zName);
          cSep = ',';
        }
        sqlite3XPrintf(&x, ")");
      }
      sqlite3XPrintf(&x, " AS");
      sqlite3StrAccumFinish(&x);
      sqlite3TreeViewItem(pView, zLine, i<pWith->nCte-1);
      sqlite3TreeViewSelect(pView, pCte->pSelect, 0);
      sqlite3TreeViewPop(pView);
    }
    sqlite3TreeViewPop(pView);
  }
................................................................................
    sqlite3TreeViewWith(pView, p->pWith, 1);
    cnt = 1;
    sqlite3TreeViewPush(pView, 1);
  }
  do{
#if SELECTTRACE_ENABLED
    sqlite3TreeViewLine(pView,
      "SELECT%s%s (%s/%d/%p) selFlags=0x%x nSelectRow=%d",
      ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
      ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""),
      p->zSelName, p->iSelectId, p, p->selFlags,
      (int)p->nSelectRow
    );
#else
    sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x nSelectRow=%d",
      ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
      ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags,
      (int)p->nSelectRow
................................................................................
      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "FROM");
      for(i=0; i<p->pSrc->nSrc; i++){
        struct SrcList_item *pItem = &p->pSrc->a[i];
        StrAccum x;
        char zLine[100];
        sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
        sqlite3XPrintf(&x, "{%d,*}", pItem->iCursor);
        if( pItem->zDatabase ){
          sqlite3XPrintf(&x, " %s.%s", pItem->zDatabase, pItem->zName);
        }else if( pItem->zName ){
          sqlite3XPrintf(&x, " %s", pItem->zName);
        }
        if( pItem->pTab ){
          sqlite3XPrintf(&x, " tabname=%Q", pItem->pTab->zName);
        }
        if( pItem->zAlias ){
          sqlite3XPrintf(&x, " (AS %s)", pItem->zAlias);
        }
        if( pItem->fg.jointype & JT_LEFT ){
          sqlite3XPrintf(&x, " LEFT-JOIN");
        }
        sqlite3StrAccumFinish(&x);
        sqlite3TreeViewItem(pView, zLine, i<p->pSrc->nSrc-1); 
        if( pItem->pSelect ){
          sqlite3TreeViewSelect(pView, pItem->pSelect, 0);
        }
        if( pItem->fg.isTabFunc ){
................................................................................
/*
 * The size of the buffer used by sqlite3_win32_write_debug().
 */
#ifndef SQLITE_WIN32_DBG_BUF_SIZE
#  define SQLITE_WIN32_DBG_BUF_SIZE   ((int)(4096-sizeof(DWORD)))
#endif

/*
 * The value used with sqlite3_win32_set_directory() to specify that
 * the data directory should be changed.
 */
#ifndef SQLITE_WIN32_DATA_DIRECTORY_TYPE
#  define SQLITE_WIN32_DATA_DIRECTORY_TYPE (1)
#endif

/*
 * The value used with sqlite3_win32_set_directory() to specify that
 * the temporary directory should be changed.
 */
#ifndef SQLITE_WIN32_TEMP_DIRECTORY_TYPE
#  define SQLITE_WIN32_TEMP_DIRECTORY_TYPE (2)
#endif

/*
 * If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
 * various Win32 API heap functions instead of our own.
 */
#ifdef SQLITE_WIN32_MALLOC

/*
................................................................................
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUtf8ToMbcs(zText, useAnsi);
}

/*
** This function sets the data directory or the temporary directory based on
** the provided arguments.  The type argument must be 1 in order to set the
** data directory or 2 in order to set the temporary directory.  The zValue
** argument is the name of the directory to use.  The return value will be
** SQLITE_OK if successful.
*/
SQLITE_API int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
  char **ppDirectory = 0;
#ifndef SQLITE_OMIT_AUTOINIT
  int rc = sqlite3_initialize();
  if( rc ) return rc;
#endif
  if( type==SQLITE_WIN32_DATA_DIRECTORY_TYPE ){
    ppDirectory = &sqlite3_data_directory;
................................................................................
    ppDirectory = &sqlite3_temp_directory;
  }
  assert( !ppDirectory || type==SQLITE_WIN32_DATA_DIRECTORY_TYPE
          || type==SQLITE_WIN32_TEMP_DIRECTORY_TYPE
  );
  assert( !ppDirectory || sqlite3MemdebugHasType(*ppDirectory, MEMTYPE_HEAP) );
  if( ppDirectory ){
    char *zValueUtf8 = 0;
    if( zValue && zValue[0] ){
      zValueUtf8 = winUnicodeToUtf8(zValue);
      if ( zValueUtf8==0 ){
        return SQLITE_NOMEM_BKPT;
      }
    }
    sqlite3_free(*ppDirectory);
    *ppDirectory = zValueUtf8;
    return SQLITE_OK;
  }
  return SQLITE_ERROR;
}


































/*
** The return value of winGetLastErrorMsg
** is zero if the error message fits in the buffer, or non-zero
** otherwise (if the message was truncated).
*/
static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
................................................................................
          pDb->safety_level | (db->flags & PAGER_FLAGS_MASK));
    }
  }
}
#else
# define setDefaultSyncFlag(pBt,safety_level)
#endif





/*
** Get a reference to pPage1 of the database file.  This will
** also acquire a readlock on that file.
**
** SQLITE_OK is returned on success.  If the file is not a
** well-formed database file, then SQLITE_CORRUPT is returned.
................................................................................
  /* Do some checking to help insure the file we opened really is
  ** a valid database file. 
  */
  nPage = nPageHeader = get4byte(28+(u8*)pPage1->aData);
  sqlite3PagerPagecount(pBt->pPager, &nPageFile);
  if( nPage==0 || memcmp(24+(u8*)pPage1->aData, 92+(u8*)pPage1->aData,4)!=0 ){
    nPage = nPageFile;



  }
  if( nPage>0 ){
    u32 pageSize;
    u32 usableSize;
    u8 *page1 = pPage1->aData;
    rc = SQLITE_NOTADB;
    /* EVIDENCE-OF: R-43737-39999 Every valid SQLite database file begins
................................................................................
  u32 ovflPageSize;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->xParseCell(pPage, pCell, pInfo);
  if( pInfo->nLocal==pInfo->nPayload ){
    return SQLITE_OK;  /* No overflow pages. Return without doing anything */
  }
  if( pCell+pInfo->nSize-1 > pPage->aData+pPage->maskPage ){


    /* Cell extends past end of page */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  ovflPgno = get4byte(pCell + pInfo->nSize - 4);
  pBt = pPage->pBt;
  assert( pBt->usableSize > 4 );
  ovflPageSize = pBt->usableSize - 4;
................................................................................

  if( pFree ){
    sqlite3PageFree(pFree);
  }
  return rc;
}


























































































/*
** Insert a new record into the BTree.  The content of the new record
** is described by the pX object.  The pCur cursor is used only to
** define what table the record should be inserted into, and is left
** pointing at a random location.
**
................................................................................
  if( pCur->pKeyInfo==0 ){
    assert( pX->pKey==0 );
    /* If this is an insert into a table b-tree, invalidate any incrblob 
    ** cursors open on the row being replaced */
    invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0);

    /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing 
    ** to a row with the same key as the new entry being inserted.  */


    assert( (flags & BTREE_SAVEPOSITION)==0 || 

            ((pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey) );



    /* If the cursor is currently on the last row and we are appending a
    ** new row onto the end, set the "loc" to avoid an unnecessary
    ** btreeMoveto() call */






    if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey ){
      loc = 0;










    }else if( loc==0 ){




      rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, flags!=0, &loc);
      if( rc ) return rc;
    }













  }else if( loc==0 && (flags & BTREE_SAVEPOSITION)==0 ){
    if( pX->nMem ){
      UnpackedRecord r;
      r.pKeyInfo = pCur->pKeyInfo;
      r.aMem = pX->aMem;
      r.nField = pX->nMem;
      r.default_rc = 0;
      r.errCode = 0;
      r.r1 = 0;
      r.r2 = 0;
      r.eqSeen = 0;
      rc = sqlite3BtreeMovetoUnpacked(pCur, &r, 0, flags!=0, &loc);
    }else{
      rc = btreeMoveto(pCur, pX->pKey, pX->nKey, flags!=0, &loc);
    }
    if( rc ) return rc;

















  }
  assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) );

  pPage = pCur->pPage;
  assert( pPage->intKey || pX->nKey>=0 );
  assert( pPage->leaf || !pPage->intKey );

................................................................................
){
  va_list ap;
  if( !pCheck->mxErr ) return;
  pCheck->mxErr--;
  pCheck->nErr++;
  va_start(ap, zFormat);
  if( pCheck->errMsg.nChar ){
    sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1);
  }
  if( pCheck->zPfx ){
    sqlite3XPrintf(&pCheck->errMsg, pCheck->zPfx, pCheck->v1, pCheck->v2);
  }
  sqlite3VXPrintf(&pCheck->errMsg, zFormat, ap);
  va_end(ap);
  if( pCheck->errMsg.accError==STRACCUM_NOMEM ){
    pCheck->mallocFailed = 1;
  }
}
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */

#ifndef SQLITE_OMIT_INTEGRITY_CHECK

................................................................................

  /* Clean  up and report errors.
  */
integrity_ck_cleanup:
  sqlite3PageFree(sCheck.heap);
  sqlite3_free(sCheck.aPgRef);
  if( sCheck.mallocFailed ){
    sqlite3StrAccumReset(&sCheck.errMsg);
    sCheck.nErr++;
  }
  *pnErr = sCheck.nErr;
  if( sCheck.nErr==0 ) sqlite3StrAccumReset(&sCheck.errMsg);
  /* Make sure this analysis did not leave any unref() pages. */
  assert( nRef==sqlite3PagerRefcount(pBt->pPager) );
  sqlite3BtreeLeave(p);
  return sqlite3StrAccumFinish(&sCheck.errMsg);
}
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */

................................................................................
  int p4type          /* P4 operand type */
){
  char *p4copy = sqlite3DbMallocRawNN(sqlite3VdbeDb(p), 8);
  if( p4copy ) memcpy(p4copy, zP4, 8);
  return sqlite3VdbeAddOp4(p, op, p1, p2, p3, p4copy, p4type);
}












































/*
** Add an OP_ParseSchema opcode.  This routine is broken out from
** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees
** as having been used.
**
** The zWhere string must have been obtained from sqlite3_malloc().
** This routine will take ownership of the allocated memory.
................................................................................
** Translate the P4.pExpr value for an OP_CursorHint opcode into text
** that can be displayed in the P4 column of EXPLAIN output.
*/
static void displayP4Expr(StrAccum *p, Expr *pExpr){
  const char *zOp = 0;
  switch( pExpr->op ){
    case TK_STRING:
      sqlite3XPrintf(p, "%Q", pExpr->u.zToken);
      break;
    case TK_INTEGER:
      sqlite3XPrintf(p, "%d", pExpr->u.iValue);
      break;
    case TK_NULL:
      sqlite3XPrintf(p, "NULL");
      break;
    case TK_REGISTER: {
      sqlite3XPrintf(p, "r[%d]", pExpr->iTable);
      break;
    }
    case TK_COLUMN: {
      if( pExpr->iColumn<0 ){
        sqlite3XPrintf(p, "rowid");
      }else{
        sqlite3XPrintf(p, "c%d", (int)pExpr->iColumn);
      }
      break;
    }
    case TK_LT:      zOp = "LT";      break;
    case TK_LE:      zOp = "LE";      break;
    case TK_GT:      zOp = "GT";      break;
    case TK_GE:      zOp = "GE";      break;
................................................................................
    case TK_UPLUS:   zOp = "PLUS";    break;
    case TK_BITNOT:  zOp = "BITNOT";  break;
    case TK_NOT:     zOp = "NOT";     break;
    case TK_ISNULL:  zOp = "ISNULL";  break;
    case TK_NOTNULL: zOp = "NOTNULL"; break;

    default:
      sqlite3XPrintf(p, "%s", "expr");
      break;
  }

  if( zOp ){
    sqlite3XPrintf(p, "%s(", zOp);
    displayP4Expr(p, pExpr->pLeft);
    if( pExpr->pRight ){
      sqlite3StrAccumAppend(p, ",", 1);
      displayP4Expr(p, pExpr->pRight);
    }
    sqlite3StrAccumAppend(p, ")", 1);
  }
}
#endif /* VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS) */


#if VDBE_DISPLAY_P4
/*
................................................................................
  assert( nTemp>=20 );
  sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
  switch( pOp->p4type ){
    case P4_KEYINFO: {
      int j;
      KeyInfo *pKeyInfo = pOp->p4.pKeyInfo;
      assert( pKeyInfo->aSortOrder!=0 );
      sqlite3XPrintf(&x, "k(%d", pKeyInfo->nKeyField);
      for(j=0; j<pKeyInfo->nKeyField; j++){
        CollSeq *pColl = pKeyInfo->aColl[j];
        const char *zColl = pColl ? pColl->zName : "";
        if( strcmp(zColl, "BINARY")==0 ) zColl = "B";

        sqlite3XPrintf(&x, ",%s%s", pKeyInfo->aSortOrder[j] ? "-" : "", zColl);
      }
      sqlite3StrAccumAppend(&x, ")", 1);
      break;
    }
#ifdef SQLITE_ENABLE_CURSOR_HINTS
    case P4_EXPR: {
      displayP4Expr(&x, pOp->p4.pExpr);
      break;
    }
#endif
    case P4_COLLSEQ: {
      CollSeq *pColl = pOp->p4.pColl;
      sqlite3XPrintf(&x, "(%.20s)", pColl->zName);
      break;
    }
    case P4_FUNCDEF: {
      FuncDef *pDef = pOp->p4.pFunc;
      sqlite3XPrintf(&x, "%s(%d)", pDef->zName, pDef->nArg);
      break;
    }
#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
    case P4_FUNCCTX: {
      FuncDef *pDef = pOp->p4.pCtx->pFunc;
      sqlite3XPrintf(&x, "%s(%d)", pDef->zName, pDef->nArg);
      break;
    }
#endif
    case P4_INT64: {
      sqlite3XPrintf(&x, "%lld", *pOp->p4.pI64);
      break;
    }
    case P4_INT32: {
      sqlite3XPrintf(&x, "%d", pOp->p4.i);
      break;
    }
    case P4_REAL: {
      sqlite3XPrintf(&x, "%.16g", *pOp->p4.pReal);
      break;
    }
    case P4_MEM: {
      Mem *pMem = pOp->p4.pMem;
      if( pMem->flags & MEM_Str ){
        zP4 = pMem->z;
      }else if( pMem->flags & MEM_Int ){
        sqlite3XPrintf(&x, "%lld", pMem->u.i);
      }else if( pMem->flags & MEM_Real ){
        sqlite3XPrintf(&x, "%.16g", pMem->u.r);
      }else if( pMem->flags & MEM_Null ){
        zP4 = "NULL";
      }else{
        assert( pMem->flags & MEM_Blob );
        zP4 = "(blob)";
      }
      break;
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    case P4_VTAB: {
      sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;
      sqlite3XPrintf(&x, "vtab:%p", pVtab);
      break;
    }
#endif
    case P4_INTARRAY: {
      int i;
      int *ai = pOp->p4.ai;
      int n = ai[0];   /* The first element of an INTARRAY is always the
                       ** count of the number of elements to follow */
      for(i=1; i<=n; i++){
        sqlite3XPrintf(&x, ",%d", ai[i]);
      }
      zTemp[0] = '[';
      sqlite3StrAccumAppend(&x, "]", 1);
      break;
    }
    case P4_SUBPROGRAM: {
      sqlite3XPrintf(&x, "program");
      break;
    }
    case P4_DYNBLOB:
    case P4_ADVANCE: {
      zTemp[0] = 0;
      break;
    }
    case P4_TABLE: {
      sqlite3XPrintf(&x, "%s", pOp->p4.pTab->zName);
      break;
    }
    default: {
      zP4 = pOp->p4.z;
      if( zP4==0 ){
        zP4 = zTemp;
        zTemp[0] = 0;
................................................................................
  db = p->db;
  sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase), 
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  if( db->nVdbeExec>1 ){
    while( *zRawSql ){
      const char *zStart = zRawSql;
      while( *(zRawSql++)!='\n' && *zRawSql );
      sqlite3StrAccumAppend(&out, "-- ", 3);
      assert( (zRawSql - zStart) > 0 );
      sqlite3StrAccumAppend(&out, zStart, (int)(zRawSql-zStart));
    }
  }else if( p->nVar==0 ){
    sqlite3StrAccumAppend(&out, zRawSql, sqlite3Strlen30(zRawSql));
  }else{
    while( zRawSql[0] ){
      n = findNextHostParameter(zRawSql, &nToken);
      assert( n>0 );
      sqlite3StrAccumAppend(&out, zRawSql, n);
      zRawSql += n;
      assert( zRawSql[0] || nToken==0 );
      if( nToken==0 ) break;
      if( zRawSql[0]=='?' ){
        if( nToken>1 ){
          assert( sqlite3Isdigit(zRawSql[1]) );
          sqlite3GetInt32(&zRawSql[1], &idx);
................................................................................
        assert( idx>0 );
      }
      zRawSql += nToken;
      nextIndex = idx + 1;
      assert( idx>0 && idx<=p->nVar );
      pVar = &p->aVar[idx-1];
      if( pVar->flags & MEM_Null ){
        sqlite3StrAccumAppend(&out, "NULL", 4);
      }else if( pVar->flags & MEM_Int ){
        sqlite3XPrintf(&out, "%lld", pVar->u.i);
      }else if( pVar->flags & MEM_Real ){
        sqlite3XPrintf(&out, "%!.15g", pVar->u.r);
      }else if( pVar->flags & MEM_Str ){
        int nOut;  /* Number of bytes of the string text to include in output */
#ifndef SQLITE_OMIT_UTF16
        u8 enc = ENC(db);
        if( enc!=SQLITE_UTF8 ){
          memset(&utf8, 0, sizeof(utf8));
          utf8.db = db;
          sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
          if( SQLITE_NOMEM==sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8) ){
            out.accError = STRACCUM_NOMEM;
            out.nAlloc = 0;
          }
          pVar = &utf8;
        }
#endif
        nOut = pVar->n;
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut>SQLITE_TRACE_SIZE_LIMIT ){
          nOut = SQLITE_TRACE_SIZE_LIMIT;
          while( nOut<pVar->n && (pVar->z[nOut]&0xc0)==0x80 ){ nOut++; }
        }
#endif    
        sqlite3XPrintf(&out, "'%.*q'", nOut, pVar->z);
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut<pVar->n ){
          sqlite3XPrintf(&out, "/*+%d bytes*/", pVar->n-nOut);
        }
#endif
#ifndef SQLITE_OMIT_UTF16
        if( enc!=SQLITE_UTF8 ) sqlite3VdbeMemRelease(&utf8);
#endif
      }else if( pVar->flags & MEM_Zero ){
        sqlite3XPrintf(&out, "zeroblob(%d)", pVar->u.nZero);
      }else{
        int nOut;  /* Number of bytes of the blob to include in output */
        assert( pVar->flags & MEM_Blob );
        sqlite3StrAccumAppend(&out, "x'", 2);
        nOut = pVar->n;
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut>SQLITE_TRACE_SIZE_LIMIT ) nOut = SQLITE_TRACE_SIZE_LIMIT;
#endif
        for(i=0; i<nOut; i++){
          sqlite3XPrintf(&out, "%02x", pVar->z[i]&0xff);
        }
        sqlite3StrAccumAppend(&out, "'", 1);
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut<pVar->n ){
          sqlite3XPrintf(&out, "/*+%d bytes*/", pVar->n-nOut);
        }
#endif
      }
    }
  }
  if( out.accError ) sqlite3StrAccumReset(&out);
  return sqlite3StrAccumFinish(&out);
}

#endif /* #ifndef SQLITE_OMIT_TRACE */

/************** End of vdbetrace.c *******************************************/
/************** Begin file vdbe.c ********************************************/
................................................................................
            if( aiMap ) aiMap[i] = j;
          }
  
          assert( i==nExpr || colUsed!=(MASKBIT(nExpr)-1) );
          if( colUsed==(MASKBIT(nExpr)-1) ){
            /* If we reach this point, that means the index pIdx is usable */
            int iAddr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
#ifndef SQLITE_OMIT_EXPLAIN
            sqlite3VdbeAddOp4(v, OP_Explain, 0, 0, 0,
              sqlite3MPrintf(db, "USING INDEX %s FOR IN-OPERATOR",pIdx->zName),
              P4_DYNAMIC);
#endif
            sqlite3VdbeAddOp3(v, OP_OpenRead, iTab, pIdx->tnum, iDb);
            sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
            VdbeComment((v, "%s", pIdx->zName));
            assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 );
            eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0];
  
            if( prRhsHasNull ){
................................................................................
        **
        ** Generate code to write the results of the select into the temporary
        ** table allocated and opened above.
        */
        Select *pSelect = pExpr->x.pSelect;
        ExprList *pEList = pSelect->pEList;

#ifndef SQLITE_OMIT_EXPLAIN
        if( pParse->explain==2 ){
          char *zMsg = sqlite3MPrintf(pParse->db, "EXECUTE %sLIST SUBQUERY %d",
            jmpIfDynamic>=0?"":"CORRELATED ",
            pParse->iNextSelectId
          );
          sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg,
                            P4_DYNAMIC);
        }
#endif

        assert( !isRowid );
        /* If the LHS and RHS of the IN operator do not match, that
        ** error will have been caught long before we reach this point. */
        if( ALWAYS(pEList->nExpr==nVal) ){
          SelectDest dest;
          int i;
          sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable);
................................................................................
      Expr *pLimit;                         /* New limit expression */

      testcase( pExpr->op==TK_EXISTS );
      testcase( pExpr->op==TK_SELECT );
      assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT );
      assert( ExprHasProperty(pExpr, EP_xIsSelect) );

#ifndef SQLITE_OMIT_EXPLAIN
      if( pParse->explain==2 ){
        char *zMsg = sqlite3MPrintf(pParse->db, "EXECUTE %sSCALAR SUBQUERY %d",
            jmpIfDynamic>=0?"":"CORRELATED ",
            pParse->iNextSelectId
        );
        sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg,
                          P4_DYNAMIC);
      }
#endif

      pSel = pExpr->x.pSelect;
      nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1;
      sqlite3SelectDestInit(&dest, 0, pParse->nMem+1);
      pParse->nMem += nReg;
      if( pExpr->op==TK_SELECT ){
        dest.eDest = SRT_Mem;
        dest.iSdst = dest.iSDParm;
        dest.nSdst = nReg;
................................................................................

  assert( target>0 && target<=pParse->nMem );
  if( v==0 ){
    assert( pParse->db->mallocFailed );
    return 0;
  }


  if( pExpr==0 ){
    op = TK_NULL;
  }else{
    op = pExpr->op;
  }
  switch( op ){
    case TK_AGG_COLUMN: {
................................................................................
    case TK_BETWEEN: {
      exprCodeBetween(pParse, pExpr, target, 0, 0);
      return target;
    }
    case TK_SPAN:
    case TK_COLLATE: 
    case TK_UPLUS: {
      return sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target);

    }

    case TK_TRIGGER: {
      /* If the opcode is TK_TRIGGER, then the expression is a reference
      ** to a column in the new.* or old.* pseudo-tables available to
      ** trigger programs. In this case Expr.iTable is set to 1 for the
      ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn
................................................................................
  assert( pTab!=0 );
  assert( pParse->nErr==0 );
  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 
       && db->init.busy==0
#if SQLITE_USER_AUTHENTICATION
       && sqlite3UserAuthTable(pTab->zName)==0
#endif



       && sqlite3StrNICmp(&pTab->zName[7],"altertab_",9)!=0 ){

    sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName);
    goto exit_create_index;
  }
#ifndef SQLITE_OMIT_VIEW
  if( pTab->pSelect ){
    sqlite3ErrorMsg(pParse, "views may not be indexed");
    goto exit_create_index;
................................................................................
  char *zErr;
  int j;
  StrAccum errMsg;
  Table *pTab = pIdx->pTable;

  sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, 200);
  if( pIdx->aColExpr ){
    sqlite3XPrintf(&errMsg, "index '%q'", pIdx->zName);
  }else{
    for(j=0; j<pIdx->nKeyCol; j++){
      char *zCol;
      assert( pIdx->aiColumn[j]>=0 );
      zCol = pTab->aCol[pIdx->aiColumn[j]].zName;
      if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2);
      sqlite3StrAccumAppendAll(&errMsg, pTab->zName);
      sqlite3StrAccumAppend(&errMsg, ".", 1);
      sqlite3StrAccumAppendAll(&errMsg, zCol);
    }
  }
  zErr = sqlite3StrAccumFinish(&errMsg);
  sqlite3HaltConstraint(pParse, 
    IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY 
                            : SQLITE_CONSTRAINT_UNIQUE,
    onError, zErr, P4_DYNAMIC, P5_ConstraintUnique);
................................................................................

  if( argc>=1 && (zFormat = (const char*)sqlite3_value_text(argv[0]))!=0 ){
    x.nArg = argc-1;
    x.nUsed = 0;
    x.apArg = argv+1;
    sqlite3StrAccumInit(&str, db, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]);
    str.printfFlags = SQLITE_PRINTF_SQLFUNC;
    sqlite3XPrintf(&str, zFormat, &x);
    n = str.nChar;
    sqlite3_result_text(context, sqlite3StrAccumFinish(&str), n,
                        SQLITE_DYNAMIC);
  }
}

/*
................................................................................
      if( argc==2 ){
        zSep = (char*)sqlite3_value_text(argv[1]);
        nSep = sqlite3_value_bytes(argv[1]);
      }else{
        zSep = ",";
        nSep = 1;
      }
      if( zSep ) sqlite3StrAccumAppend(pAccum, zSep, nSep);
    }
    zVal = (char*)sqlite3_value_text(argv[0]);
    nVal = sqlite3_value_bytes(argv[0]);
    if( zVal ) sqlite3StrAccumAppend(pAccum, zVal, nVal);
  }
}
static void groupConcatFinalize(sqlite3_context *context){
  StrAccum *pAccum;
  pAccum = sqlite3_aggregate_context(context, 0);
  if( pAccum ){
    if( pAccum->accError==STRACCUM_TOOBIG ){
      sqlite3_result_error_toobig(context);
    }else if( pAccum->accError==STRACCUM_NOMEM ){
      sqlite3_result_error_nomem(context);
    }else{    
      sqlite3_result_text(context, sqlite3StrAccumFinish(pAccum), -1, 
                          sqlite3_free);
    }
  }
}
................................................................................
                      sqlite3_stmt**,const void**);
  int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
  void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
  void *(*value_pointer)(sqlite3_value*,const char*);
  int (*vtab_nochange)(sqlite3_context*);
  int (*value_nochange)(sqlite3_value*);
  const char *(*vtab_collation)(sqlite3_index_info*,int);















};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_bind_pointer           sqlite3_api->bind_pointer
#define sqlite3_result_pointer         sqlite3_api->result_pointer
#define sqlite3_value_pointer          sqlite3_api->value_pointer
/* Version 3.22.0 and later */
#define sqlite3_vtab_nochange          sqlite3_api->vtab_nochange
#define sqlite3_value_nochange         sqlite3_api->value_nochange
#define sqlite3_vtab_collation         sqlite3_api->vtab_collation















#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
  /* This case when the file really is being compiled as a loadable 
  ** extension */
# define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;
................................................................................
  sqlite3_prepare16_v3,
  sqlite3_bind_pointer,
  sqlite3_result_pointer,
  sqlite3_value_pointer,
  /* Version 3.22.0 and later */
  sqlite3_vtab_nochange,
  sqlite3_value_nochange,
  sqlite3_vtab_collation















};

/*
** Attempt to load an SQLite extension library contained in the file
** zFile.  The entry point is zProc.  zProc may be 0 in which case a
** default entry point name (sqlite3_extension_init) is used.  Use
** of the default name is recommended.
................................................................................

  zEntry = zProc ? zProc : "sqlite3_extension_init";

  handle = sqlite3OsDlOpen(pVfs, zFile);
#if SQLITE_OS_UNIX || SQLITE_OS_WIN
  for(ii=0; ii<ArraySize(azEndings) && handle==0; ii++){
    char *zAltFile = sqlite3_mprintf("%s.%s", zFile, azEndings[ii]);
    int bExists = 0;
    if( zAltFile==0 ) return SQLITE_NOMEM_BKPT;
    sqlite3OsAccess(pVfs, zAltFile, SQLITE_ACCESS_EXISTS, &bExists);
    if( bExists )  handle = sqlite3OsDlOpen(pVfs, zAltFile);
    sqlite3_free(zAltFile);
  }
#endif
  if( handle==0 ){
    if( pzErrMsg ){
      *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg);
      if( zErrmsg ){
................................................................................
  char cSep = '(';
  StrAccum acc;
  char zBuf[200];

  UNUSED_PARAMETER(argc);
  UNUSED_PARAMETER(argv);
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  sqlite3StrAccumAppendAll(&acc, "CREATE TABLE x");
  for(i=0, j=pPragma->iPragCName; i<pPragma->nPragCName; i++, j++){
    sqlite3XPrintf(&acc, "%c\"%s\"", cSep, pragCName[j]);
    cSep = ',';
  }
  if( i==0 ){
    sqlite3XPrintf(&acc, "(\"%s\"", pPragma->zName);
    cSep = ',';
    i++;
  }
  j = 0;
  if( pPragma->mPragFlg & PragFlg_Result1 ){
    sqlite3StrAccumAppendAll(&acc, ",arg HIDDEN");
    j++;
  }
  if( pPragma->mPragFlg & (PragFlg_SchemaOpt|PragFlg_SchemaReq) ){
    sqlite3StrAccumAppendAll(&acc, ",schema HIDDEN");
    j++;
  }
  sqlite3StrAccumAppend(&acc, ")", 1);
  sqlite3StrAccumFinish(&acc);
  assert( strlen(zBuf) < sizeof(zBuf)-1 );
  rc = sqlite3_declare_vtab(db, zBuf);
  if( rc==SQLITE_OK ){
    pTab = (PragmaVtab*)sqlite3_malloc(sizeof(PragmaVtab));
    if( pTab==0 ){
      rc = SQLITE_NOMEM;
................................................................................
      pCsr->azArg[j] = sqlite3_mprintf("%s", zText);
      if( pCsr->azArg[j]==0 ){
        return SQLITE_NOMEM;
      }
    }
  }
  sqlite3StrAccumInit(&acc, 0, 0, 0, pTab->db->aLimit[SQLITE_LIMIT_SQL_LENGTH]);
  sqlite3StrAccumAppendAll(&acc, "PRAGMA ");
  if( pCsr->azArg[1] ){
    sqlite3XPrintf(&acc, "%Q.", pCsr->azArg[1]);
  }
  sqlite3StrAccumAppendAll(&acc, pTab->pName->zName);
  if( pCsr->azArg[0] ){
    sqlite3XPrintf(&acc, "=%Q", pCsr->azArg[0]);
  }
  zSql = sqlite3StrAccumFinish(&acc);
  if( zSql==0 ) return SQLITE_NOMEM;
  rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pPragma, 0);
  sqlite3_free(zSql);
  if( rc!=SQLITE_OK ){
    pTab->base.zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pTab->db));
................................................................................
  **    meta[9]   unused
  **
  ** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to
  ** the possible values of meta[4].
  */
  for(i=0; i<ArraySize(meta); i++){
    sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]);



  }
  pDb->pSchema->schema_cookie = meta[BTREE_SCHEMA_VERSION-1];

  /* If opening a non-empty database, check the text encoding. For the
  ** main database, set sqlite3.enc to the encoding of the main database.
  ** For an attached db, it is an error if the encoding is not the same
  ** as sqlite3.enc.
................................................................................
  }
  rc = sParse.rc;

#ifndef SQLITE_OMIT_EXPLAIN
  if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){
    static const char * const azColName[] = {
       "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment",
       "selectid", "order", "from", "detail"
    };
    int iFirst, mx;
    if( sParse.explain==2 ){
      sqlite3VdbeSetNumCols(sParse.pVdbe, 4);
      iFirst = 8;
      mx = 12;
    }else{
................................................................................
/*
** Trace output macros
*/
#if SELECTTRACE_ENABLED
/***/ int sqlite3SelectTrace = 0;
# define SELECTTRACE(K,P,S,X)  \
  if(sqlite3SelectTrace&(K))   \
    sqlite3DebugPrintf("%s/%d/%p: ",(S)->zSelName,(P)->iSelectId,(S)),\
    sqlite3DebugPrintf X
#else
# define SELECTTRACE(K,P,S,X)
#endif


/*
................................................................................
  u8 nDefer;            /* Number of valid entries in aDefer[] */
  struct DeferredCsr {
    Table *pTab;        /* Table definition */
    int iCsr;           /* Cursor number for table */
    int nKey;           /* Number of PK columns for table pTab (>=1) */
  } aDefer[4];
#endif

};
#define SORTFLAG_UseSorter  0x01   /* Use SorterOpen instead of OpenEphemeral */

/*
** Delete all the content of a Select structure.  Deallocate the structure
** itself only if bFree is true.
*/
................................................................................
/* Forward reference */
static KeyInfo *keyInfoFromExprList(
  Parse *pParse,       /* Parsing context */
  ExprList *pList,     /* Form the KeyInfo object from this ExprList */
  int iStart,          /* Begin with this column of pList */
  int nExtra           /* Add this many extra columns to the end */
);

























































/*
** Generate code that will push the record in registers regData
** through regData+nData-1 onto the sorter.
*/
static void pushOntoSorter(
  Parse *pParse,         /* Parser context */
  SortCtx *pSort,        /* Information about the ORDER BY clause */
  Select *pSelect,       /* The whole SELECT statement */
  int regData,           /* First register holding data to be sorted */
  int regOrigData,       /* First register holding data before packing */
  int nData,             /* Number of elements in the data array */
  int nPrefixReg         /* No. of reg prior to regData available for use */
){
  Vdbe *v = pParse->pVdbe;                         /* Stmt under construction */
  int bSeq = ((pSort->sortFlags & SORTFLAG_UseSorter)==0);
  int nExpr = pSort->pOrderBy->nExpr;              /* No. of ORDER BY terms */
  int nBase = nExpr + bSeq + nData;                /* Fields in sorter record */
  int regBase;                                     /* Regs for sorter record */
  int regRecord = ++pParse->nMem;                  /* Assembled sorter record */
  int nOBSat = pSort->nOBSat;                      /* ORDER BY terms to skip */
  int op;                            /* Opcode to add sorter record to sorter */
  int iLimit;                        /* LIMIT counter */


  assert( bSeq==0 || bSeq==1 );














  assert( nData==1 || regData==regOrigData || regOrigData==0 );

  if( nPrefixReg ){
    assert( nPrefixReg==nExpr+bSeq );
    regBase = regData - nExpr - bSeq;
  }else{
    regBase = pParse->nMem + 1;
    pParse->nMem += nBase;
  }
  assert( pSelect->iOffset==0 || pSelect->iLimit!=0 );
  iLimit = pSelect->iOffset ? pSelect->iOffset+1 : pSelect->iLimit;
  pSort->labelDone = sqlite3VdbeMakeLabel(v);
................................................................................
    int regPrevKey;   /* The first nOBSat columns of the previous row */
    int addrFirst;    /* Address of the OP_IfNot opcode */
    int addrJmp;      /* Address of the OP_Jump opcode */
    VdbeOp *pOp;      /* Opcode that opens the sorter */
    int nKey;         /* Number of sorting key columns, including OP_Sequence */
    KeyInfo *pKI;     /* Original KeyInfo on the sorter table */

    sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase+nOBSat, nBase-nOBSat,regRecord);
    regPrevKey = pParse->nMem+1;
    pParse->nMem += pSort->nOBSat;
    nKey = nExpr - pSort->nOBSat + bSeq;
    if( bSeq ){
      addrFirst = sqlite3VdbeAddOp1(v, OP_IfNot, regBase+nExpr); 
    }else{
      addrFirst = sqlite3VdbeAddOp1(v, OP_SequenceTest, pSort->iECursor);
................................................................................
    ** If the new record does not need to be inserted into the sorter,
    ** jump to the next iteration of the loop. Or, if the
    ** pSort->bOrderedInnerLoop flag is set to indicate that the inner
    ** loop delivers items in sorted order, jump to the next iteration
    ** of the outer loop.
    */
    int iCsr = pSort->iECursor;
    int iJmp = sqlite3VdbeCurrentAddr(v)+5+(nOBSat<=0)+pSort->bOrderedInnerLoop;
    assert( pSort->bOrderedInnerLoop==0 || pSort->bOrderedInnerLoop==1 );
    sqlite3VdbeAddOp2(v, OP_IfNotZero, iLimit, sqlite3VdbeCurrentAddr(v)+4);
    VdbeCoverage(v);
    sqlite3VdbeAddOp2(v, OP_Last, iCsr, 0);
    sqlite3VdbeAddOp4Int(v, OP_IdxLE, iCsr, iJmp, regBase+nOBSat, nExpr-nOBSat);

    VdbeCoverage(v);
    sqlite3VdbeAddOp1(v, OP_Delete, iCsr);
  }
  if( nOBSat<=0 ){
    sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase+nOBSat, nBase-nOBSat,regRecord);
  }
  if( pSort->sortFlags & SORTFLAG_UseSorter ){
    op = OP_SorterInsert;
  }else{
    op = OP_IdxInsert;
  }
  sqlite3VdbeAddOp4Int(v, op, pSort->iECursor, regRecord,
                       regBase+nOBSat, nBase-nOBSat);





}

/*
** Add code to implement the OFFSET
*/
static void codeOffset(
  Vdbe *v,          /* Generate code into this VM */
................................................................................
  for(i=0; i<pEList->nExpr; i++){
    struct ExprList_item *pItem = &pEList->a[i];
    if( pItem->u.x.iOrderByCol==0 ){
      Expr *pExpr = pItem->pExpr;
      Table *pTab = pExpr->pTab;
      if( pExpr->op==TK_COLUMN && pTab && !IsVirtual(pTab)
       && (pTab->aCol[pExpr->iColumn].colFlags & COLFLAG_SORTERREF)
#if 0
          && pTab->pSchema && pTab->pSelect==0 && !IsVirtual(pTab)
#endif
      ){
        int j;
        for(j=0; j<nDefer; j++){
          if( pSort->aDefer[j].iCsr==pExpr->iTable ) break;
        }
        if( j==nDefer ){
          if( nDefer==ArraySize(pSort->aDefer) ){
................................................................................
  Vdbe *v = pParse->pVdbe;
  int i;
  int hasDistinct;            /* True if the DISTINCT keyword is present */
  int eDest = pDest->eDest;   /* How to dispose of results */
  int iParm = pDest->iSDParm; /* First argument to disposal method */
  int nResultCol;             /* Number of result columns */
  int nPrefixReg = 0;         /* Number of extra registers before regResult */


  /* Usually, regResult is the first cell in an array of memory cells
  ** containing the current result row. In this case regOrig is set to the
  ** same value. However, if the results are being sent to the sorter, the
  ** values for any expressions that are also part of the sort-key are omitted
  ** from this array. In this case regOrig is set to zero.  */
  int regResult;              /* Start of memory holding current results */
................................................................................
  }else if( eDest!=SRT_Exists ){
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
    ExprList *pExtra = 0;
#endif
    /* If the destination is an EXISTS(...) expression, the actual
    ** values returned by the SELECT are not required.
    */
    u8 ecelFlags;

    if( eDest==SRT_Mem || eDest==SRT_Output || eDest==SRT_Coroutine ){
      ecelFlags = SQLITE_ECEL_DUP;
    }else{
      ecelFlags = 0;
    }
    if( pSort && hasDistinct==0 && eDest!=SRT_EphemTab && eDest!=SRT_Table ){
      /* For each expression in p->pEList that is a copy of an expression in
      ** the ORDER BY clause (pSort->pOrderBy), set the associated 
      ** iOrderByCol value to one more than the index of the ORDER BY 
      ** expression within the sort-key that pushOntoSorter() will generate.
      ** This allows the p->pEList field to be omitted from the sorted record,
      ** saving space and CPU cycles.  */
      ecelFlags |= (SQLITE_ECEL_OMITREF|SQLITE_ECEL_REF);

      for(i=pSort->nOBSat; i<pSort->pOrderBy->nExpr; i++){
        int j;
        if( (j = pSort->pOrderBy->a[i].u.x.iOrderByCol)>0 ){
          p->pEList->a[j-1].u.x.iOrderByCol = i+1-pSort->nOBSat;
        }
      }
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
................................................................................
        ** composite primary keys in the SortCtx.aDefer[] array.  */
        VdbeOp *pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex);
        pOp->p2 += (pExtra->nExpr - pSort->nDefer);
        pOp->p4.pKeyInfo->nAllField += (pExtra->nExpr - pSort->nDefer);
        pParse->nMem += pExtra->nExpr;
      }
#endif











      regOrig = 0;








      assert( eDest==SRT_Set || eDest==SRT_Mem 
           || eDest==SRT_Coroutine || eDest==SRT_Output );
    }
    nResultCol = sqlite3ExprCodeExprList(pParse,p->pEList,regResult,

                                         0,ecelFlags);
#ifdef SQLITE_ENABLE_SORTER_REFERENCES


    if( pExtra ){
      nResultCol += sqlite3ExprCodeExprList(
          pParse, pExtra, regResult + nResultCol, 0, 0




      );
      sqlite3ExprListDelete(pParse->db, pExtra);






    }
#endif
  }

  /* If the DISTINCT keyword was present on the SELECT statement
  ** and this row has been seen before, then do not make this row
  ** part of the result.
  */
  if( hasDistinct ){
................................................................................
        sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, addr, r1, 0);
        VdbeCoverage(v);
        sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm+1, r1,regResult,nResultCol);
        assert( pSort==0 );
      }
#endif
      if( pSort ){

        pushOntoSorter(pParse, pSort, p, r1+nPrefixReg,regResult,1,nPrefixReg);
      }else{
        int r2 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, r2);
        sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, r2);
        sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
        sqlite3ReleaseTempReg(pParse, r2);
      }
................................................................................
**
**   "USE TEMP B-TREE FOR xxx"
**
** where xxx is one of "DISTINCT", "ORDER BY" or "GROUP BY". Exactly which
** is determined by the zUsage argument.
*/
static void explainTempTable(Parse *pParse, const char *zUsage){
  if( pParse->explain==2 ){
    Vdbe *v = pParse->pVdbe;
    char *zMsg = sqlite3MPrintf(pParse->db, "USE TEMP B-TREE FOR %s", zUsage);
    sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
  }
}

/*
** Assign expression b to lvalue a. A second, no-op, version of this macro
** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
** in sqlite3Select() to assign values to structure member variables that
** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
................................................................................

#else
/* No-op versions of the explainXXX() functions and macros. */
# define explainTempTable(y,z)
# define explainSetInteger(y,z)
#endif

#if !defined(SQLITE_OMIT_EXPLAIN) && !defined(SQLITE_OMIT_COMPOUND_SELECT)
/*
** Unless an "EXPLAIN QUERY PLAN" command is being processed, this function
** is a no-op. Otherwise, it adds a single row of output to the EQP result,
** where the caption is of one of the two forms:
**
**   "COMPOSITE SUBQUERIES iSub1 and iSub2 (op)"
**   "COMPOSITE SUBQUERIES iSub1 and iSub2 USING TEMP B-TREE (op)"
**
** where iSub1 and iSub2 are the integers passed as the corresponding
** function parameters, and op is the text representation of the parameter
** of the same name. The parameter "op" must be one of TK_UNION, TK_EXCEPT,
** TK_INTERSECT or TK_ALL. The first form is used if argument bUseTmp is 
** false, or the second form if it is true.
*/
static void explainComposite(
  Parse *pParse,                  /* Parse context */
  int op,                         /* One of TK_UNION, TK_EXCEPT etc. */
  int iSub1,                      /* Subquery id 1 */
  int iSub2,                      /* Subquery id 2 */
  int bUseTmp                     /* True if a temp table was used */
){
  assert( op==TK_UNION || op==TK_EXCEPT || op==TK_INTERSECT || op==TK_ALL );
  if( pParse->explain==2 ){
    Vdbe *v = pParse->pVdbe;
    char *zMsg = sqlite3MPrintf(
        pParse->db, "COMPOUND SUBQUERIES %d AND %d %s(%s)", iSub1, iSub2,
        bUseTmp?"USING TEMP B-TREE ":"", selectOpName(op)
    );
    sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC);
  }
}
#else
/* No-op versions of the explainXXX() functions and macros. */
# define explainComposite(v,w,x,y,z)
#endif

/*
** If the inner loop was generated using a non-null pOrderBy argument,
** then the results were placed in a sorter.  After the loop is terminated
** we need to run the sorter and output the results.  The following
** routine generates the code needed to do that.
*/
................................................................................
#ifndef SQLITE_OMIT_EXPLAIN
  /* If this is an EXPLAIN, skip this step */
  if( pParse->explain ){
    return;
  }
#endif

  if( pParse->colNamesSet || db->mallocFailed ) return;
  /* Column names are determined by the left-most term of a compound select */
  while( pSelect->pPrior ) pSelect = pSelect->pPrior;
  SELECTTRACE(1,pParse,pSelect,("generating column names\n"));
  pTabList = pSelect->pSrc;
  pEList = pSelect->pEList;
  assert( v!=0 );
  assert( pTabList!=0 );
................................................................................
  }

  /* Detach the ORDER BY clause from the compound SELECT */
  p->pOrderBy = 0;

  /* Store the results of the setup-query in Queue. */
  pSetup->pNext = 0;

  rc = sqlite3Select(pParse, pSetup, &destQueue);
  pSetup->pNext = p;
  if( rc ) goto end_of_recursive_query;

  /* Find the next row in the Queue and output that row */
  addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, iQueue, addrBreak); VdbeCoverage(v);

................................................................................
  /* Execute the recursive SELECT taking the single row in Current as
  ** the value for the recursive-table. Store the results in the Queue.
  */
  if( p->selFlags & SF_Aggregate ){
    sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported");
  }else{
    p->pPrior = 0;

    sqlite3Select(pParse, p, &destQueue);
    assert( p->pPrior==0 );
    p->pPrior = pSetup;
  }

  /* Keep running the loop until the Queue is empty */
  sqlite3VdbeGoto(v, addrTop);
................................................................................
** Since the limit is exactly 1, we only need to evalutes the left-most VALUES.
*/
static int multiSelectValues(
  Parse *pParse,        /* Parsing context */
  Select *p,            /* The right-most of SELECTs to be coded */
  SelectDest *pDest     /* What to do with query results */
){
  Select *pPrior;
  Select *pRightmost = p;
  int nRow = 1;
  int rc = 0;

  assert( p->selFlags & SF_MultiValue );
  do{
    assert( p->selFlags & SF_Values );
    assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
    assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr );
    if( p->pPrior==0 ) break;
    assert( p->pPrior->pNext==p );
    p = p->pPrior;
    nRow++;
  }while(1);


  while( p ){
    pPrior = p->pPrior;
    p->pPrior = 0;
    rc = sqlite3Select(pParse, p, pDest);
    p->pPrior = pPrior;
    if( rc || pRightmost->pLimit ) break;
    p->nSelectRow = nRow;
    p = p->pNext;
  }
  return rc;
}

/*
................................................................................
){
  int rc = SQLITE_OK;   /* Success code from a subroutine */
  Select *pPrior;       /* Another SELECT immediately to our left */
  Vdbe *v;              /* Generate code to this VDBE */
  SelectDest dest;      /* Alternative data destination */
  Select *pDelete = 0;  /* Chain of simple selects to delete */
  sqlite3 *db;          /* Database connection */
#ifndef SQLITE_OMIT_EXPLAIN
  int iSub1 = 0;        /* EQP id of left-hand query */
  int iSub2 = 0;        /* EQP id of right-hand query */
#endif

  /* Make sure there is no ORDER BY or LIMIT clause on prior SELECTs.  Only
  ** the last (right-most) SELECT in the series may have an ORDER BY or LIMIT.
  */
  assert( p && p->pPrior );  /* Calling function guarantees this much */
  assert( (p->selFlags & SF_Recursive)==0 || p->op==TK_ALL || p->op==TK_UNION );
  db = pParse->db;
................................................................................
  }else
#endif

  /* Compound SELECTs that have an ORDER BY clause are handled separately.
  */
  if( p->pOrderBy ){
    return multiSelectOrderBy(pParse, p, pDest);
  }else








  /* Generate code for the left and right SELECT statements.
  */
  switch( p->op ){
    case TK_ALL: {
      int addr = 0;
      int nLimit;
      assert( !pPrior->pLimit );
      pPrior->iLimit = p->iLimit;
      pPrior->iOffset = p->iOffset;
      pPrior->pLimit = p->pLimit;
      explainSetInteger(iSub1, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, pPrior, &dest);
      p->pLimit = 0;
      if( rc ){
        goto multi_select_end;
      }
      p->pPrior = 0;
      p->iLimit = pPrior->iLimit;
      p->iOffset = pPrior->iOffset;
      if( p->iLimit ){
        addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v);
        VdbeComment((v, "Jump ahead if LIMIT reached"));
        if( p->iOffset ){
          sqlite3VdbeAddOp3(v, OP_OffsetLimit,
                            p->iLimit, p->iOffset+1, p->iOffset);
        }
      }
      explainSetInteger(iSub2, pParse->iNextSelectId);

      rc = sqlite3Select(pParse, p, &dest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      if( pPrior->pLimit
       && sqlite3ExprIsInteger(pPrior->pLimit->pLeft, &nLimit)
       && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) 
      ){
        p->nSelectRow = sqlite3LogEst((u64)nLimit);
      }
      if( addr ){
        sqlite3VdbeJumpHere(v, addr);
      }
      break;
    }
    case TK_EXCEPT:
    case TK_UNION: {
      int unionTab;    /* Cursor number of the temporary table holding result */
      u8 op = 0;       /* One of the SRT_ operations to apply to self */
      int priorOp;     /* The SRT_ operation to apply to prior selects */
      Expr *pLimit;    /* Saved values of p->nLimit  */
      int addr;
      SelectDest uniondest;

      testcase( p->op==TK_EXCEPT );
      testcase( p->op==TK_UNION );
      priorOp = SRT_Union;
      if( dest.eDest==priorOp ){
        /* We can reuse a temporary table generated by a SELECT to our
        ** right.
        */
        assert( p->pLimit==0 );      /* Not allowed on leftward elements */
        unionTab = dest.iSDParm;
      }else{
        /* We will need to create our own temporary table to hold the
        ** intermediate results.
        */
        unionTab = pParse->nTab++;
        assert( p->pOrderBy==0 );
        addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, unionTab, 0);
        assert( p->addrOpenEphm[0] == -1 );
        p->addrOpenEphm[0] = addr;
        findRightmost(p)->selFlags |= SF_UsesEphemeral;
        assert( p->pEList );
      }

      /* Code the SELECT statements to our left
      */
      assert( !pPrior->pOrderBy );
      sqlite3SelectDestInit(&uniondest, priorOp, unionTab);
      explainSetInteger(iSub1, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, pPrior, &uniondest);
      if( rc ){
        goto multi_select_end;
      }

      /* Code the current SELECT statement
      */
      if( p->op==TK_EXCEPT ){
        op = SRT_Except;
      }else{
        assert( p->op==TK_UNION );
        op = SRT_Union;
      }
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;
      uniondest.eDest = op;
      explainSetInteger(iSub2, pParse->iNextSelectId);


      rc = sqlite3Select(pParse, p, &uniondest);
      testcase( rc!=SQLITE_OK );
      /* Query flattening in sqlite3Select() might refill p->pOrderBy.
      ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */
      sqlite3ExprListDelete(db, p->pOrderBy);
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      p->pOrderBy = 0;
      if( p->op==TK_UNION ){
        p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
      }
      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;
      p->iLimit = 0;
      p->iOffset = 0;

      /* Convert the data in the temporary table into whatever form
      ** it is that we currently need.
      */
      assert( unionTab==dest.iSDParm || dest.eDest!=priorOp );
      if( dest.eDest!=priorOp ){
        int iCont, iBreak, iStart;
        assert( p->pEList );
        iBreak = sqlite3VdbeMakeLabel(v);
        iCont = sqlite3VdbeMakeLabel(v);
        computeLimitRegisters(pParse, p, iBreak);
        sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); VdbeCoverage(v);
        iStart = sqlite3VdbeCurrentAddr(v);
        selectInnerLoop(pParse, p, unionTab,
                        0, 0, &dest, iCont, iBreak);
        sqlite3VdbeResolveLabel(v, iCont);
        sqlite3VdbeAddOp2(v, OP_Next, unionTab, iStart); VdbeCoverage(v);
        sqlite3VdbeResolveLabel(v, iBreak);
        sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0);
      }
      break;
    }
    default: assert( p->op==TK_INTERSECT ); {
      int tab1, tab2;
      int iCont, iBreak, iStart;
      Expr *pLimit;
      int addr;
      SelectDest intersectdest;
      int r1;

      /* INTERSECT is different from the others since it requires
      ** two temporary tables.  Hence it has its own case.  Begin
      ** by allocating the tables we will need.
      */
      tab1 = pParse->nTab++;
      tab2 = pParse->nTab++;
      assert( p->pOrderBy==0 );

      addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab1, 0);
      assert( p->addrOpenEphm[0] == -1 );
      p->addrOpenEphm[0] = addr;
      findRightmost(p)->selFlags |= SF_UsesEphemeral;
      assert( p->pEList );

      /* Code the SELECTs to our left into temporary table "tab1".
      */
      sqlite3SelectDestInit(&intersectdest, SRT_Union, tab1);
      explainSetInteger(iSub1, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, pPrior, &intersectdest);
      if( rc ){
        goto multi_select_end;
      }

      /* Code the current SELECT into temporary table "tab2"
      */
      addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0);
      assert( p->addrOpenEphm[1] == -1 );
      p->addrOpenEphm[1] = addr;
      p->pPrior = 0;
      pLimit = p->pLimit;
      p->pLimit = 0;
      intersectdest.iSDParm = tab2;
      explainSetInteger(iSub2, pParse->iNextSelectId);


      rc = sqlite3Select(pParse, p, &intersectdest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
      if( p->nSelectRow>pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow;


      sqlite3ExprDelete(db, p->pLimit);
      p->pLimit = pLimit;

      /* Generate code to take the intersection of the two temporary
      ** tables.
      */
      assert( p->pEList );
      iBreak = sqlite3VdbeMakeLabel(v);
      iCont = sqlite3VdbeMakeLabel(v);
      computeLimitRegisters(pParse, p, iBreak);
      sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); VdbeCoverage(v);
      r1 = sqlite3GetTempReg(pParse);
      iStart = sqlite3VdbeAddOp2(v, OP_RowData, tab1, r1);
      sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0); VdbeCoverage(v);

      sqlite3ReleaseTempReg(pParse, r1);
      selectInnerLoop(pParse, p, tab1,
                      0, 0, &dest, iCont, iBreak);
      sqlite3VdbeResolveLabel(v, iCont);
      sqlite3VdbeAddOp2(v, OP_Next, tab1, iStart); VdbeCoverage(v);
      sqlite3VdbeResolveLabel(v, iBreak);
      sqlite3VdbeAddOp2(v, OP_Close, tab2, 0);
      sqlite3VdbeAddOp2(v, OP_Close, tab1, 0);
      break;
    }
  }

  explainComposite(pParse, p->op, iSub1, iSub2, p->op!=TK_ALL);







  /* Compute collating sequences used by 
  ** temporary tables needed to implement the compound select.
  ** Attach the KeyInfo structure to all temporary tables.
  **
  ** This section is run by the right-most SELECT statement only.
  ** SELECT statements to the left always skip this part.  The right-most
  ** SELECT might also skip this part if it has no ORDER BY clause and
................................................................................
  int op;               /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */
  KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */
  KeyInfo *pKeyMerge;   /* Comparison information for merging rows */
  sqlite3 *db;          /* Database connection */
  ExprList *pOrderBy;   /* The ORDER BY clause */
  int nOrderBy;         /* Number of terms in the ORDER BY clause */
  int *aPermute;        /* Mapping from ORDER BY terms to result set columns */
#ifndef SQLITE_OMIT_EXPLAIN
  int iSub1;            /* EQP id of left-hand query */
  int iSub2;            /* EQP id of right-hand query */
#endif

  assert( p->pOrderBy!=0 );
  assert( pKeyDup==0 ); /* "Managed" code needs this.  Ticket #3382. */
  db = pParse->db;
  v = pParse->pVdbe;
  assert( v!=0 );       /* Already thrown the error if VDBE alloc failed */
  labelEnd = sqlite3VdbeMakeLabel(v);
................................................................................
  regAddrA = ++pParse->nMem;
  regAddrB = ++pParse->nMem;
  regOutA = ++pParse->nMem;
  regOutB = ++pParse->nMem;
  sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA);
  sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB);



  /* Generate a coroutine to evaluate the SELECT statement to the
  ** left of the compound operator - the "A" select.
  */
  addrSelectA = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA);
  VdbeComment((v, "left SELECT"));
  pPrior->iLimit = regLimitA;
  explainSetInteger(iSub1, pParse->iNextSelectId);
  sqlite3Select(pParse, pPrior, &destA);
  sqlite3VdbeEndCoroutine(v, regAddrA);
  sqlite3VdbeJumpHere(v, addr1);

  /* Generate a coroutine to evaluate the SELECT statement on 
  ** the right - the "B" select
  */
................................................................................
  addrSelectB = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB);
  VdbeComment((v, "right SELECT"));
  savedLimit = p->iLimit;
  savedOffset = p->iOffset;
  p->iLimit = regLimitB;
  p->iOffset = 0;  
  explainSetInteger(iSub2, pParse->iNextSelectId);
  sqlite3Select(pParse, p, &destB);
  p->iLimit = savedLimit;
  p->iOffset = savedOffset;
  sqlite3VdbeEndCoroutine(v, regAddrB);

  /* Generate a subroutine that outputs the current row of the A
  ** select as the next output row of the compound select.
................................................................................
    sqlite3SelectDelete(db, p->pPrior);
  }
  p->pPrior = pPrior;
  pPrior->pNext = p;

  /*** TBD:  Insert subroutine calls to close cursors on incomplete
  **** subqueries ****/
  explainComposite(pParse, p->op, iSub1, iSub2, 0);
  return pParse->nErr!=0;
}
#endif

#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)

/* An instance of the SubstContext object describes an substitution edit
................................................................................
static void explainSimpleCount(
  Parse *pParse,                  /* Parse context */
  Table *pTab,                    /* Table being queried */
  Index *pIdx                     /* Index used to optimize scan, or NULL */
){
  if( pParse->explain==2 ){
    int bCover = (pIdx!=0 && (HasRowid(pTab) || !IsPrimaryKeyIndex(pIdx)));
    char *zEqp = sqlite3MPrintf(pParse->db, "SCAN TABLE %s%s%s",
        pTab->zName,
        bCover ? " USING COVERING INDEX " : "",
        bCover ? pIdx->zName : ""
    );
    sqlite3VdbeAddOp4(
        pParse->pVdbe, OP_Explain, pParse->iSelectId, 0, 0, zEqp, P4_DYNAMIC
    );
  }
}
#else
# define explainSimpleCount(a,b,c)
#endif

/*
................................................................................
  SortCtx sSort;         /* Info on how to code the ORDER BY clause */
  AggInfo sAggInfo;      /* Information used by aggregate queries */
  int iEnd;              /* Address of the end of the query */
  sqlite3 *db;           /* The database connection */
  ExprList *pMinMaxOrderBy = 0;  /* Added ORDER BY for min/max queries */
  u8 minMaxFlag;                 /* Flag for min/max queries */

#ifndef SQLITE_OMIT_EXPLAIN
  int iRestoreSelectId = pParse->iSelectId;
  pParse->iSelectId = pParse->iNextSelectId++;
#endif

  db = pParse->db;

  if( p==0 || db->mallocFailed || pParse->nErr ){
    return 1;
  }
  if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1;
  memset(&sAggInfo, 0, sizeof(sAggInfo));
#if SELECTTRACE_ENABLED
#ifndef SQLITE_OMIT_EXPLAIN
  p->iSelectId = pParse->iSelectId;
#endif
  SELECTTRACE(1,pParse,p, ("begin processing:\n", pParse->iSelectId));
  if( sqlite3SelectTrace & 0x100 ){
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif

  assert( p->pOrderBy==0 || pDest->eDest!=SRT_DistFifo );
  assert( p->pOrderBy==0 || pDest->eDest!=SRT_Fifo );
................................................................................
#if SELECTTRACE_ENABLED
  if( sqlite3SelectTrace & 0x104 ){
    SELECTTRACE(0x104,pParse,p, ("after name resolution:\n"));
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif

  /* Get a pointer the VDBE under construction, allocating a new VDBE if one
  ** does not already exist */
  v = sqlite3GetVdbe(pParse);
  if( v==0 ) goto select_end;
  if( pDest->eDest==SRT_Output ){
    generateColumnNames(pParse, p);
  }

  /* Try to various optimizations (flattening subqueries, and strength
  ** reduction of join operators) in the FROM clause up into the main query
  */
................................................................................
  /* Handle compound SELECT statements using the separate multiSelect()
  ** procedure.
  */
  if( p->pPrior ){
    rc = multiSelect(pParse, p, pDest);
#if SELECTTRACE_ENABLED
    SELECTTRACE(0x1,pParse,p,("end compound-select processing\n"));
    if( pParse->iSelectId==0 && (sqlite3SelectTrace & 0x2000)!=0 ){
      sqlite3TreeViewSelect(0, p, 0);
    }
#endif
    explainSetInteger(pParse->iSelectId, iRestoreSelectId);
    return rc;
  }
#endif

  /* For each term in the FROM clause, do two things:
  ** (1) Authorized unreferenced tables
  ** (2) Generate code for all sub-queries
................................................................................
      int addrTop = sqlite3VdbeCurrentAddr(v)+1;
     
      pItem->regReturn = ++pParse->nMem;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, pItem->regReturn, 0, addrTop);
      VdbeComment((v, "%s", pItem->pTab->zName));
      pItem->addrFillSub = addrTop;
      sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn);
      explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
      sqlite3Select(pParse, pSub, &dest);
      pItem->pTab->nRowLogEst = pSub->nSelectRow;
      pItem->fg.viaCoroutine = 1;
      pItem->regResult = dest.iSdst;
      sqlite3VdbeEndCoroutine(v, pItem->regReturn);
      sqlite3VdbeJumpHere(v, addrTop-1);
      sqlite3ClearTempRegCache(pParse);
................................................................................
        VdbeComment((v, "materialize \"%s\"", pItem->pTab->zName));
      }else{
        VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName));
      }
      pPrior = isSelfJoinView(pTabList, pItem);
      if( pPrior ){
        sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor);
        explainSetInteger(pItem->iSelectId, pPrior->iSelectId);
        assert( pPrior->pSelect!=0 );
        pSub->nSelectRow = pPrior->pSelect->nSelectRow;
      }else{
        sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor);
        explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId);
        sqlite3Select(pParse, pSub, &dest);
      }
      pItem->pTab->nRowLogEst = pSub->nSelectRow;
      if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr);
      retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
      VdbeComment((v, "end %s", pItem->pTab->zName));
      sqlite3VdbeChangeP1(v, topAddr, retAddr);
................................................................................
  */
select_end:
  sqlite3ExprListDelete(db, pMinMaxOrderBy);
  sqlite3DbFree(db, sAggInfo.aCol);
  sqlite3DbFree(db, sAggInfo.aFunc);
#if SELECTTRACE_ENABLED
  SELECTTRACE(0x1,pParse,p,("end processing\n"));
  if( pParse->iSelectId==0 && (sqlite3SelectTrace & 0x2000)!=0 ){
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif
  explainSetInteger(pParse->iSelectId, iRestoreSelectId);
  return rc;
}

/************** End of select.c **********************************************/
/************** Begin file table.c *******************************************/
/*
** 2001 September 15
................................................................................

  /* printf("SQL: [%s]\n", zSql); fflush(stdout); */
  rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0);
  if( rc!=SQLITE_OK ) return rc;
  while( SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
    const char *zSubSql = (const char*)sqlite3_column_text(pStmt,0);
    assert( sqlite3_strnicmp(zSql,"SELECT",6)==0 );
    assert( sqlite3_strnicmp(zSubSql,"SELECT",6)!=0 || CORRUPT_DB );




    if( zSubSql && zSubSql[0]!='S' ){


      rc = execSql(db, pzErrMsg, zSubSql);
      if( rc!=SQLITE_OK ) break;
    }
  }
  assert( rc!=SQLITE_ROW );
  if( rc==SQLITE_DONE ) rc = SQLITE_OK;
  if( rc ){
................................................................................
      " WHERE type='table'AND name<>'sqlite_sequence'"
      " AND coalesce(rootpage,1)>0",
      zDbMain
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execSqlF(db, pzErrMsg,
      "SELECT sql FROM \"%w\".sqlite_master"
      " WHERE type='index' AND length(sql)>10",
      zDbMain
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  db->init.iDb = 0;

  /* Loop through the tables in the main database. For each, do
  ** an "INSERT INTO vacuum_db.xxx SELECT * FROM main.xxx;" to copy
................................................................................

/* wherecode.c: */
#ifndef SQLITE_OMIT_EXPLAIN
SQLITE_PRIVATE int sqlite3WhereExplainOneScan(
  Parse *pParse,                  /* Parse context */
  SrcList *pTabList,              /* Table list this loop refers to */
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */
  int iLevel,                     /* Value for "level" column of output */
  int iFrom,                      /* Value for "from" column of output */
  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
);
#else
# define sqlite3WhereExplainOneScan(u,v,w,x,y,z) 0
#endif /* SQLITE_OMIT_EXPLAIN */
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
SQLITE_PRIVATE void sqlite3WhereAddScanStatus(
  Vdbe *v,                        /* Vdbe to add scanstatus entry to */
  SrcList *pSrclist,              /* FROM clause pLvl reads data from */
  WhereLevel *pLvl,               /* Level to add scanstatus() entry for */
  int addrExplain                 /* Address of OP_Explain (or 0) */
................................................................................
  int iTerm,                  /* Zero-based index of first term. */
  int bAnd,                   /* Non-zero to append " AND " */
  const char *zOp             /* Name of the operator */
){
  int i;

  assert( nTerm>=1 );
  if( bAnd ) sqlite3StrAccumAppend(pStr, " AND ", 5);

  if( nTerm>1 ) sqlite3StrAccumAppend(pStr, "(", 1);
  for(i=0; i<nTerm; i++){
    if( i ) sqlite3StrAccumAppend(pStr, ",", 1);
    sqlite3StrAccumAppendAll(pStr, explainIndexColumnName(pIdx, iTerm+i));
  }
  if( nTerm>1 ) sqlite3StrAccumAppend(pStr, ")", 1);

  sqlite3StrAccumAppend(pStr, zOp, 1);

  if( nTerm>1 ) sqlite3StrAccumAppend(pStr, "(", 1);
  for(i=0; i<nTerm; i++){
    if( i ) sqlite3StrAccumAppend(pStr, ",", 1);
    sqlite3StrAccumAppend(pStr, "?", 1);
  }
  if( nTerm>1 ) sqlite3StrAccumAppend(pStr, ")", 1);
}

/*
** Argument pLevel describes a strategy for scanning table pTab. This 
** function appends text to pStr that describes the subset of table
** rows scanned by the strategy in the form of an SQL expression.
**
................................................................................
static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop){
  Index *pIndex = pLoop->u.btree.pIndex;
  u16 nEq = pLoop->u.btree.nEq;
  u16 nSkip = pLoop->nSkip;
  int i, j;

  if( nEq==0 && (pLoop->wsFlags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))==0 ) return;
  sqlite3StrAccumAppend(pStr, " (", 2);
  for(i=0; i<nEq; i++){
    const char *z = explainIndexColumnName(pIndex, i);
    if( i ) sqlite3StrAccumAppend(pStr, " AND ", 5);
    sqlite3XPrintf(pStr, i>=nSkip ? "%s=?" : "ANY(%s)", z);
  }

  j = i;
  if( pLoop->wsFlags&WHERE_BTM_LIMIT ){
    explainAppendTerm(pStr, pIndex, pLoop->u.btree.nBtm, j, i, ">");
    i = 1;
  }
  if( pLoop->wsFlags&WHERE_TOP_LIMIT ){
    explainAppendTerm(pStr, pIndex, pLoop->u.btree.nTop, j, i, "<");
  }
  sqlite3StrAccumAppend(pStr, ")", 1);
}

/*
** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN
** command, or if either SQLITE_DEBUG or SQLITE_ENABLE_STMT_SCANSTATUS was
** defined at compile-time. If it is not a no-op, a single OP_Explain opcode 
** is added to the output to describe the table scan strategy in pLevel.
................................................................................
** If an OP_Explain opcode is added to the VM, its address is returned.
** Otherwise, if no OP_Explain is coded, zero is returned.
*/
SQLITE_PRIVATE int sqlite3WhereExplainOneScan(
  Parse *pParse,                  /* Parse context */
  SrcList *pTabList,              /* Table list this loop refers to */
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */
  int iLevel,                     /* Value for "level" column of output */
  int iFrom,                      /* Value for "from" column of output */
  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
){
  int ret = 0;
#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS)
  if( sqlite3ParseToplevel(pParse)->explain==2 )
#endif
  {
    struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
    Vdbe *v = pParse->pVdbe;      /* VM being constructed */
    sqlite3 *db = pParse->db;     /* Database handle */
    int iId = pParse->iSelectId;  /* Select id (left-most output column) */
    int isSearch;                 /* True for a SEARCH. False for SCAN. */
    WhereLoop *pLoop;             /* The controlling WhereLoop object */
    u32 flags;                    /* Flags that describe this loop */
    char *zMsg;                   /* Text to add to EQP output */
    StrAccum str;                 /* EQP output string */
    char zBuf[100];               /* Initial space for EQP output string */

................................................................................
    if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_OR_SUBCLAUSE) ) return 0;

    isSearch = (flags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0
            || ((flags&WHERE_VIRTUALTABLE)==0 && (pLoop->u.btree.nEq>0))
            || (wctrlFlags&(WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX));

    sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH);
    sqlite3StrAccumAppendAll(&str, isSearch ? "SEARCH" : "SCAN");
    if( pItem->pSelect ){
      sqlite3XPrintf(&str, " SUBQUERY %d", pItem->iSelectId);
    }else{
      sqlite3XPrintf(&str, " TABLE %s", pItem->zName);
    }

    if( pItem->zAlias ){
      sqlite3XPrintf(&str, " AS %s", pItem->zAlias);
    }
    if( (flags & (WHERE_IPK|WHERE_VIRTUALTABLE))==0 ){
      const char *zFmt = 0;
      Index *pIdx;

      assert( pLoop->u.btree.pIndex!=0 );
      pIdx = pLoop->u.btree.pIndex;
................................................................................
        zFmt = "AUTOMATIC COVERING INDEX";
      }else if( flags & WHERE_IDX_ONLY ){
        zFmt = "COVERING INDEX %s";
      }else{
        zFmt = "INDEX %s";
      }
      if( zFmt ){
        sqlite3StrAccumAppend(&str, " USING ", 7);
        sqlite3XPrintf(&str, zFmt, pIdx->zName);
        explainIndexRange(&str, pLoop);
      }
    }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){
      const char *zRangeOp;
      if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){
        zRangeOp = "=";
      }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){
................................................................................
        zRangeOp = ">? AND rowid<";
      }else if( flags&WHERE_BTM_LIMIT ){
        zRangeOp = ">";
      }else{
        assert( flags&WHERE_TOP_LIMIT);
        zRangeOp = "<";
      }

      sqlite3XPrintf(&str, " USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp);
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    else if( (flags & WHERE_VIRTUALTABLE)!=0 ){
      sqlite3XPrintf(&str, " VIRTUAL TABLE INDEX %d:%s",
                  pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr);
    }
#endif
#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS
    if( pLoop->nOut>=10 ){

      sqlite3XPrintf(&str, " (~%llu rows)", sqlite3LogEstToInt(pLoop->nOut));
    }else{
      sqlite3StrAccumAppend(&str, " (~1 row)", 9);
    }
#endif
    zMsg = sqlite3StrAccumFinish(&str);
    ret = sqlite3VdbeAddOp4(v, OP_Explain, iId, iLevel, iFrom, zMsg,P4_DYNAMIC);

  }
  return ret;
}
#endif /* SQLITE_OMIT_EXPLAIN */

#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
/*
................................................................................
    }

    /* Run a separate WHERE clause for each term of the OR clause.  After
    ** eliminating duplicates from other WHERE clauses, the action for each
    ** sub-WHERE clause is to to invoke the main loop body as a subroutine.
    */
    wctrlFlags =  WHERE_OR_SUBCLAUSE | (pWInfo->wctrlFlags & WHERE_SEEK_TABLE);

    for(ii=0; ii<pOrWc->nTerm; ii++){
      WhereTerm *pOrTerm = &pOrWc->a[ii];
      if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
        WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
        Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
        int jmp1 = 0;                   /* Address of jump operation */
        assert( (pTabItem[0].fg.jointype & JT_LEFT)==0 
................................................................................
        WHERETRACE(0xffff, ("Subplan for OR-clause:\n"));
        pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0,
                                      wctrlFlags, iCovCur);
        assert( pSubWInfo || pParse->nErr || db->mallocFailed );
        if( pSubWInfo ){
          WhereLoop *pSubLoop;
          int addrExplain = sqlite3WhereExplainOneScan(
              pParse, pOrTab, &pSubWInfo->a[0], iLevel, pLevel->iFrom, 0
          );
          sqlite3WhereAddScanStatus(v, pOrTab, &pSubWInfo->a[0], addrExplain);

          /* This is the sub-WHERE clause body.  First skip over
          ** duplicate rows from prior sub-WHERE clauses, and record the
          ** rowid (or PRIMARY KEY) for the current row so that the same
          ** row will be skipped in subsequent sub-WHERE clauses.
................................................................................
          }

          /* Finish the loop through table entries that match term pOrTerm. */
          sqlite3WhereEnd(pSubWInfo);
        }
      }
    }

    pLevel->u.pCovidx = pCov;
    if( pCov ) pLevel->iIdxCur = iCovCur;
    if( pAndExpr ){
      pAndExpr->pLeft = 0;
      sqlite3ExprDelete(db, pAndExpr);
    }
    sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v));
................................................................................
  /* Special case: No FROM clause
  */
  if( nTabList==0 ){
    if( pOrderBy ) pWInfo->nOBSat = pOrderBy->nExpr;
    if( wctrlFlags & WHERE_WANT_DISTINCT ){
      pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE;
    }

  }else{
    /* Assign a bit from the bitmask to every term in the FROM clause.
    **
    ** The N-th term of the FROM clause is assigned a bitmask of 1<<N.
    **
    ** The rule of the previous sentence ensures thta if X is the bitmask for
    ** a table T, then X-1 is the bitmask for all other tables to the left of T.
................................................................................
    if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
      constructAutomaticIndex(pParse, &pWInfo->sWC,
                &pTabList->a[pLevel->iFrom], notReady, pLevel);
      if( db->mallocFailed ) goto whereBeginError;
    }
#endif
    addrExplain = sqlite3WhereExplainOneScan(
        pParse, pTabList, pLevel, ii, pLevel->iFrom, wctrlFlags
    );
    pLevel->addrBody = sqlite3VdbeCurrentAddr(v);
    notReady = sqlite3WhereCodeOneLoopStart(pWInfo, ii, notReady);
    pWInfo->iContinue = pLevel->addrCont;
    if( (wsFlags&WHERE_MULTI_OR)==0 && (wctrlFlags&WHERE_OR_SUBCLAUSE)==0 ){
      sqlite3WhereAddScanStatus(v, pTabList, pLevel, addrExplain);
    }
................................................................................
        { SQLITE_DBCONFIG_ENABLE_FKEY,           SQLITE_ForeignKeys    },
        { SQLITE_DBCONFIG_ENABLE_TRIGGER,        SQLITE_EnableTrigger  },
        { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer  },
        { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension  },
        { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE,      SQLITE_NoCkptOnClose  },
        { SQLITE_DBCONFIG_ENABLE_QPSG,           SQLITE_EnableQPSG     },
        { SQLITE_DBCONFIG_TRIGGER_EQP,           SQLITE_TriggerEQP     },

      };
      unsigned int i;
      rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
      for(i=0; i<ArraySize(aFlagOp); i++){
        if( aFlagOp[i].op==op ){
          int onoff = va_arg(ap, int);
          int *pRes = va_arg(ap, int*);
................................................................................

/* fts3_expr.c */
SQLITE_PRIVATE int sqlite3Fts3ExprParse(sqlite3_tokenizer *, int,
  char **, int, int, int, const char *, int, Fts3Expr **, char **
);
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *);
#ifdef SQLITE_TEST
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db);
SQLITE_PRIVATE int sqlite3Fts3InitTerm(sqlite3 *db);
#endif

SQLITE_PRIVATE int sqlite3Fts3OpenTokenizer(sqlite3_tokenizer *, int, const char *, int,
  sqlite3_tokenizer_cursor **
);

................................................................................
    ){
      rc = SQLITE_NOMEM;
    }
  }

#ifdef SQLITE_TEST
  if( rc==SQLITE_OK ){
    rc = sqlite3Fts3ExprInitTestInterface(db);
  }
#endif

  /* Create the virtual table wrapper around the hash-table and overload 
  ** the four scalar functions. If this is successful, register the
  ** module with sqlite.
  */
................................................................................
** Everything after this point is just test code.
*/

#ifdef SQLITE_TEST

/* #include <stdio.h> */

/*
** Function to query the hash-table of tokenizers (see README.tokenizers).
*/
static int queryTestTokenizer(
  sqlite3 *db, 
  const char *zName,  
  const sqlite3_tokenizer_module **pp
){
  int rc;
  sqlite3_stmt *pStmt;
  const char zSql[] = "SELECT fts3_tokenizer(?)";

  *pp = 0;
  rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0);
  if( rc!=SQLITE_OK ){
    return rc;
  }

  sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC);
  if( SQLITE_ROW==sqlite3_step(pStmt) ){
    if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){
      memcpy((void *)pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp));
    }
  }

  return sqlite3_finalize(pStmt);
}

/*
** Return a pointer to a buffer containing a text representation of the
** expression passed as the first argument. The buffer is obtained from
** sqlite3_malloc(). It is the responsibility of the caller to use 
** sqlite3_free() to release the memory. If an OOM condition is encountered,
** NULL is returned.
**
................................................................................
** to parse the query expression (see README.tokenizers). The second argument
** is the query expression to parse. Each subsequent argument is the name
** of a column of the fts3 table that the query expression may refer to.
** For example:
**
**   SELECT fts3_exprtest('simple', 'Bill col2:Bloggs', 'col1', 'col2');
*/
static void fts3ExprTest(

  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  sqlite3_tokenizer_module const *pModule = 0;
  sqlite3_tokenizer *pTokenizer = 0;
  int rc;
  char **azCol = 0;
  const char *zExpr;
  int nExpr;
  int nCol;
  int ii;
  Fts3Expr *pExpr;
  char *zBuf = 0;
  sqlite3 *db = sqlite3_context_db_handle(context);



  if( argc<3 ){
    sqlite3_result_error(context, 
        "Usage: fts3_exprtest(tokenizer, expr, col1, ...", -1
    );
    return;
  }

  rc = queryTestTokenizer(db,
                          (const char *)sqlite3_value_text(argv[0]), &pModule);


  if( rc==SQLITE_NOMEM ){
    sqlite3_result_error_nomem(context);
    goto exprtest_out;
  }else if( !pModule ){
    sqlite3_result_error(context, "No such tokenizer module", -1);
    goto exprtest_out;
  }



  rc = pModule->xCreate(0, 0, &pTokenizer);
  assert( rc==SQLITE_NOMEM || rc==SQLITE_OK );
  if( rc==SQLITE_NOMEM ){
    sqlite3_result_error_nomem(context);
    goto exprtest_out;
  }
  pTokenizer->pModule = pModule;

  zExpr = (const char *)sqlite3_value_text(argv[1]);
  nExpr = sqlite3_value_bytes(argv[1]);
  nCol = argc-2;
  azCol = (char **)sqlite3_malloc(nCol*sizeof(char *));
  if( !azCol ){
    sqlite3_result_error_nomem(context);
    goto exprtest_out;
  }
  for(ii=0; ii<nCol; ii++){
    azCol[ii] = (char *)sqlite3_value_text(argv[ii+2]);
  }

  if( sqlite3_user_data(context) ){
    char *zDummy = 0;
    rc = sqlite3Fts3ExprParse(
        pTokenizer, 0, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr, &zDummy
    );
    assert( rc==SQLITE_OK || pExpr==0 );
    sqlite3_free(zDummy);
  }else{
................................................................................
    sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
    sqlite3_free(zBuf);
  }

  sqlite3Fts3ExprFree(pExpr);

exprtest_out:
  if( pModule && pTokenizer ){
    rc = pModule->xDestroy(pTokenizer);
  }
  sqlite3_free(azCol);
}
















/*
** Register the query expression parser test function fts3_exprtest() 
** with database connection db. 
*/
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3* db){
  int rc = sqlite3_create_function(
      db, "fts3_exprtest", -1, SQLITE_UTF8, 0, fts3ExprTest, 0, 0
  );
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "fts3_exprtest_rebalance", 
        -1, SQLITE_UTF8, (void *)1, fts3ExprTest, 0, 0
    );
  }
  return rc;
}

#endif
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */
................................................................................
**
** RBU_STATE_COOKIE:
**   Valid if STAGE==1. The current change-counter cookie value in the 
**   target db file.
**
** RBU_STATE_OALSZ:
**   Valid if STAGE==1. The size in bytes of the *-oal file.




*/
#define RBU_STATE_STAGE        1
#define RBU_STATE_TBL          2
#define RBU_STATE_IDX          3
#define RBU_STATE_ROW          4
#define RBU_STATE_PROGRESS     5
#define RBU_STATE_CKPT         6
#define RBU_STATE_COOKIE       7
#define RBU_STATE_OALSZ        8
#define RBU_STATE_PHASEONESTEP 9


#define RBU_STAGE_OAL         1
#define RBU_STAGE_MOVE        2
#define RBU_STAGE_CAPTURE     3
#define RBU_STAGE_CKPT        4
#define RBU_STAGE_DONE        5

................................................................................

/*
** A structure to store values read from the rbu_state table in memory.
*/
struct RbuState {
  int eStage;
  char *zTbl;

  char *zIdx;
  i64 iWalCksum;
  int nRow;
  i64 nProgress;
  u32 iCookie;
  i64 iOalSz;
  i64 nPhaseOneStep;
................................................................................

/*
** Free an RbuState object allocated by rbuLoadState().
*/
static void rbuFreeState(RbuState *p){
  if( p ){
    sqlite3_free(p->zTbl);

    sqlite3_free(p->zIdx);
    sqlite3_free(p);
  }
}

/*
** Allocate an RbuState object and load the contents of the rbu_state 
................................................................................
      case RBU_STATE_OALSZ:
        pRet->iOalSz = (u32)sqlite3_column_int64(pStmt, 1);
        break;

      case RBU_STATE_PHASEONESTEP:
        pRet->nPhaseOneStep = sqlite3_column_int64(pStmt, 1);
        break;





      default:
        rc = SQLITE_CORRUPT;
        break;
    }
  }
  rc2 = sqlite3_finalize(pStmt);
................................................................................
          "(%d, %Q), "
          "(%d, %Q), "
          "(%d, %d), "
          "(%d, %d), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld) ",

          p->zStateDb,
          RBU_STATE_STAGE, eStage,
          RBU_STATE_TBL, p->objiter.zTbl, 
          RBU_STATE_IDX, p->objiter.zIdx, 
          RBU_STATE_ROW, p->nStep, 
          RBU_STATE_PROGRESS, p->nProgress,
          RBU_STATE_CKPT, p->iWalCksum,
          RBU_STATE_COOKIE, (i64)pFd->iCookie,
          RBU_STATE_OALSZ, p->iOalSz,
          RBU_STATE_PHASEONESTEP, p->nPhaseOneStep

      )
    );
    assert( pInsert==0 || rc==SQLITE_OK );

    if( rc==SQLITE_OK ){
      sqlite3_step(pInsert);
      rc = sqlite3_finalize(pInsert);
................................................................................
  assert( p->rc==SQLITE_OK );
  if( pState->zTbl ){
    RbuObjIter *pIter = &p->objiter;
    int rc = SQLITE_OK;

    while( rc==SQLITE_OK && pIter->zTbl && (pIter->bCleanup 
       || rbuStrCompare(pIter->zIdx, pState->zIdx)
       || rbuStrCompare(pIter->zTbl, pState->zTbl) 

    )){
      rc = rbuObjIterNext(p, pIter);
    }

    if( rc==SQLITE_OK && !pIter->zTbl ){
      rc = SQLITE_ERROR;
      p->zErrmsg = sqlite3_mprintf("rbu_state mismatch error");
................................................................................
static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "fts5: 2018-04-26 12:27:03 368c14da868a843767344f6cc17c499fddd83244c0510337ed9a918e64ee2413", -1, SQLITE_TRANSIENT);
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 2,
    /* xCreate       */ fts5CreateMethod,
    /* xConnect      */ fts5ConnectMethod,
................................................................................
#endif
  return rc;
}
#endif /* SQLITE_CORE */
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */

/************** End of stmt.c ************************************************/
#if __LINE__!=211000
#undef SQLITE_SOURCE_ID
#define SQLITE_SOURCE_ID      "2018-04-26 18:34:26 9fd0faf517993587d2f54212638545fc85fbbc84a031bcfae8c1e5894825alt2"
#endif
/* Return the source-id for this library */
SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/************************** End of sqlite3.c ******************************/







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1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
....
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
....
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
....
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
....
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
.....
13861
13862
13863
13864
13865
13866
13867
13868
13869
13870
13871
13872
13873
13874
13875
.....
14153
14154
14155
14156
14157
14158
14159
14160
14161
14162
14163
14164
14165
14166
14167
14168
14169
14170
14171
14172
14173
14174
14175
14176
14177
14178
14179
14180
14181
14182
14183
14184
14185
14186
14187
14188
14189
14190
14191
14192
14193
14194
14195
14196
14197
14198
14199
.....
14705
14706
14707
14708
14709
14710
14711
14712
14713
14714
14715
14716
14717
14718
14719
14720
14721
14722
14723
14724
14725
14726
14727
14728
14729
14730
14731
.....
16021
16022
16023
16024
16025
16026
16027
16028
16029
16030
16031
16032
16033
16034
16035
.....
17124
17125
17126
17127
17128
17129
17130



17131
17132
17133
17134
17135
17136
17137
.....
17271
17272
17273
17274
17275
17276
17277
17278
17279



17280
17281
17282
17283
17284
17285
17286
.....
17292
17293
17294
17295
17296
17297
17298

17299
17300
17301
17302
17303
17304
17305
.....
17332
17333
17334
17335
17336
17337
17338
17339

17340
17341
17342
17343
17344
17345
17346
.....
17602
17603
17604
17605
17606
17607
17608
17609

17610
17611
17612
17613
17614
17615
17616
.....
17788
17789
17790
17791
17792
17793
17794
17795
17796
17797
17798
17799
17800
17801
17802
17803


17804
17805
17806
17807
17808
17809
17810
.....
18165
18166
18167
18168
18169
18170
18171


18172
18173
18174
18175
18176
18177
18178
.....
18687
18688
18689
18690
18691
18692
18693



18694

18695
18696
18697
18698
18699
18700
18701
.....
24540
24541
24542
24543
24544
24545
24546

24547
24548
24549
24550
24551
24552
24553
.....
26703
26704
26705
26706
26707
26708
26709
26710
26711
26712
26713
26714
26715
26716
26717
.....
26737
26738
26739
26740
26741
26742
26743
26744
26745
26746
26747
26748
26749
26750
26751
26752
.....
26795
26796
26797
26798
26799
26800
26801
26802
26803
26804
26805
26806
26807
26808
26809
26810
26811
26812
26813
.....
26977
26978
26979
26980
26981
26982
26983
26984
26985
26986
26987
26988
26989
26990
26991
.....
27102
27103
27104
27105
27106
27107
27108
27109
27110
27111
27112
27113
27114
27115
27116
.....
27234
27235
27236
27237
27238
27239
27240
27241
27242
27243
27244
27245
27246
27247
27248
27249
27250
27251
27252
.....
27324
27325
27326
27327
27328
27329
27330
27331
27332
27333
27334
27335
27336
27337
27338
.....
27348
27349
27350
27351
27352
27353
27354
27355
27356
27357
27358
27359
27360
27361
27362
.....
27364
27365
27366
27367
27368
27369
27370
27371
27372
27373
27374
27375
27376
27377
27378
27379
27380
27381
.....
27386
27387
27388
27389
27390
27391
27392
27393
27394
27395
27396
27397
27398
27399
27400
27401
27402
27403
27404
.....
27411
27412
27413
27414
27415
27416
27417
27418
27419
27420
27421
27422
27423
27424
27425
27426
27427
27428
27429
27430
27431
27432
27433
27434
27435
27436
27437
27438
27439
27440
27441
27442
27443
27444
.....
27447
27448
27449
27450
27451
27452
27453
27454
27455
27456
27457
27458
27459
27460
27461
27462
27463
27464
27465
27466
27467
27468
27469
27470
27471
27472
27473
27474
27475
27476
27477
27478
27479
27480
27481
27482
27483
27484
27485
27486
27487
27488
27489
27490
27491
27492
27493
27494
27495
27496
27497
27498
27499
27500
.....
27503
27504
27505
27506
27507
27508
27509
27510
27511
27512
27513
27514
27515
27516
27517
27518
.....
27521
27522
27523
27524
27525
27526
27527
27528
27529
27530
27531
27532
27533
27534
27535
27536
27537
27538
27539
27540
27541
27542
27543
27544
27545
27546
27547
27548
27549
27550
27551
27552
27553
27554
27555
27556
27557
27558
27559
27560
27561
27562
27563
27564
27565
27566
27567
27568
27569
27570
27571
27572
27573
27574
27575

27576
27577
27578
27579
27580
27581
27582
27583
27584
27585
27586
27587
27588
27589
.....
27602
27603
27604
27605
27606
27607
27608
27609
27610
27611
27612
27613
27614
27615
27616
27617
27618
27619
27620
27621
27622
27623
27624
27625
27626
27627
27628
27629
27630
27631
27632
27633
27634
27635
27636
27637
27638
27639
27640
27641
.....
27665
27666
27667
27668
27669
27670
27671
27672
27673
27674
27675
27676
27677
27678
27679
.....
27710
27711
27712
27713
27714
27715
27716
27717
27718
27719
27720
27721
27722
27723
27724
.....
27732
27733
27734
27735
27736
27737
27738
27739
27740
27741
27742
27743
27744
27745
27746
27747
27748
27749
27750
27751
27752
27753
27754
27755
27756
.....
27771
27772
27773
27774
27775
27776
27777
27778
27779
27780
27781
27782
27783
27784
27785
.....
27788
27789
27790
27791
27792
27793
27794
27795
27796
27797
27798
27799
27800
27801
27802
27803
27804
27805
27806
27807
27808
.....
27860
27861
27862
27863
27864
27865
27866
27867
27868
27869
27870
27871
27872
27873
27874
27875
27876
27877
27878
27879
27880
27881
27882
27883
.....
27903
27904
27905
27906
27907
27908
27909
27910
27911
27912
27913
27914
27915
27916
27917
27918
27919
27920
27921
27922
27923
27924
27925
27926
27927
.....
27943
27944
27945
27946
27947
27948
27949
27950
27951
27952
27953
27954
27955
27956
27957
27958
27959
27960
.....
27978
27979
27980
27981
27982
27983
27984
27985
27986
27987
27988
27989
27990
27991
27992
27993
27994
27995
27996
27997
27998
27999
28000
28001
28002
28003
28004
28005
.....
39918
39919
39920
39921
39922
39923
39924
















39925
39926
39927
39928
39929
39930
39931
.....
41514
41515
41516
41517
41518
41519
41520
41521
41522
41523
41524
41525
41526
41527
41528
41529
41530
41531
41532
41533
41534
.....
41536
41537
41538
41539
41540
41541
41542
41543
41544
41545
41546
41547
41548
41549
41550
41551
41552
41553
41554
41555
41556
41557
41558
41559
41560
41561
41562
41563
41564
41565
41566
41567
41568
41569
41570
41571
41572
41573
41574
41575
41576
41577
41578
41579
41580
41581
41582
41583
41584
41585
41586
41587
41588
41589
41590
41591
41592
41593
41594
41595
.....
64956
64957
64958
64959
64960
64961
64962
64963
64964
64965
64966
64967
64968
64969
64970
64971
64972
64973
.....
64991
64992
64993
64994
64995
64996
64997
64998
64999
65000
65001
65002
65003
65004
65005
65006
65007
.....
68211
68212
68213
68214
68215
68216
68217
68218
68219
68220
68221
68222
68223
68224
68225
68226
68227
.....
70139
70140
70141
70142
70143
70144
70145
70146
70147
70148
70149
70150
70151
70152
70153
70154
70155
70156
70157
70158
70159
70160
70161
70162
70163
70164
70165
70166
70167
70168
70169
70170
70171
70172
70173
70174
70175
70176
70177
70178
70179
70180
70181
70182
70183
70184
70185
70186
70187
70188
70189
70190
70191
70192
70193
70194
70195
70196
70197
70198
70199
70200
70201
70202
70203
70204
70205
70206
70207
70208
70209
70210
70211
70212
70213
70214
70215
70216
70217
70218
70219
70220
70221
70222
70223
70224
70225
70226
70227
70228
70229
70230
70231
70232
70233
70234
70235
70236
70237
70238
70239
70240
.....
70317
70318
70319
70320
70321
70322
70323
70324
70325
70326
70327
70328
70329
70330
70331
70332



70333
70334
70335
70336
70337
70338
70339

70340
70341
70342
70343
70344
70345
70346
70347
70348
70349
70350
70351
70352
70353
70354
70355
70356
70357
70358
70359
70360
70361
70362
70363
70364
70365
70366
70367
70368
70369
70370
70371
70372
70373
70374
70375
70376
70377
70378
70379
70380
70381
70382
70383
70384
70385
70386
70387
70388
70389
70390
70391
70392
70393
70394
70395
70396
70397
70398
70399
70400
70401
70402
70403
70404
70405
70406
70407
70408
70409
70410
.....
71235
71236
71237
71238
71239
71240
71241
71242
71243
71244
71245
71246
71247
71248
71249
71250
71251
71252
71253
71254
71255
71256
.....
71826
71827
71828
71829
71830
71831
71832
71833
71834
71835
71836
71837
71838
71839
71840
71841
71842
71843
71844
.....
75076
75077
75078
75079
75080
75081
75082
75083
75084
75085
75086
75087
75088
75089
75090
75091
75092
75093
75094
75095
75096
75097
75098
75099
75100
75101
75102
75103
75104
75105
75106
75107
75108
75109
75110
75111
75112
75113
75114
75115
75116
75117
75118
75119
75120
75121
75122
75123
75124
75125
75126
75127
75128
75129
75130
75131
75132
.....
76079
76080
76081
76082
76083
76084
76085
76086
76087
76088
76089
76090
76091
76092
76093
76094
76095
76096
76097
76098
76099
76100
76101
76102
76103
76104
76105
76106
76107
76108
76109
.....
76127
76128
76129
76130
76131
76132
76133
76134
76135
76136
76137
76138
76139
76140
76141
76142
76143
76144
76145
76146
76147
76148
76149
76150
76151
76152
.....
76159
76160
76161
76162
76163
76164
76165
76166
76167
76168
76169
76170
76171
76172
76173
76174
76175
76176
76177
76178
76179
76180
76181
76182
76183
76184
76185
76186
76187
76188
76189
76190
76191
76192
76193
76194
76195
76196
76197
76198
76199
76200
76201
76202
76203
76204
76205
76206
76207
76208
76209
76210
76211
76212
76213
76214
76215
76216
76217
76218
76219
76220
76221
76222
76223
76224
76225
76226
76227
76228
76229
76230
76231
76232
76233
76234
76235
76236
76237
76238
76239
76240
76241
76242
76243
76244
76245
76246
76247
76248
76249
76250
76251
76252
76253
76254
76255
76256
76257
76258
76259
76260
76261
76262
76263
76264
.....
81663
81664
81665
81666
81667
81668
81669
81670
81671
81672
81673
81674
81675
81676
81677
81678
81679
81680
81681
81682
81683
81684
81685
81686
81687
.....
81699
81700
81701
81702
81703
81704
81705
81706
81707
81708
81709
81710
81711
81712
81713
81714
81715
81716
81717
81718
81719
81720
81721
81722
81723
81724
81725
81726
81727
81728
81729
81730
81731
81732
81733
81734
81735
81736
81737
81738
81739
81740
81741
81742
81743
81744
81745
81746
81747
81748
81749
81750
81751
81752
81753
81754
81755
81756
81757
81758
81759
81760
81761
81762
81763
81764
81765
81766
81767
81768
81769
81770
81771
.....
97056
97057
97058
97059
97060
97061
97062
97063

97064


97065
97066
97067
97068
97069
97070
97071
.....
97289
97290
97291
97292
97293
97294
97295
97296


97297

97298





97299
97300
97301
97302
97303
97304
97305
.....
97412
97413
97414
97415
97416
97417
97418
97419
97420

97421








97422
97423
97424
97425
97426
97427
97428
.....
98177
98178
98179
98180
98181
98182
98183
98184
98185
98186
98187
98188
98189
98190
98191
.....
98638
98639
98640
98641
98642
98643
98644
98645
98646
98647
98648
98649
98650
98651
98652
98653
......
106843
106844
106845
106846
106847
106848
106849
106850
106851
106852
106853
106854
106855
106856
106857
106858
106859
106860
106861
......
108026
108027
108028
108029
108030
108031
108032
108033
108034
108035
108036
108037
108038
108039
108040
108041
108042
108043
108044
108045
108046
108047
108048
108049
......
110005
110006
110007
110008
110009
110010
110011
110012
110013
110014
110015
110016
110017
110018
110019
......
111408
111409
111410
111411
111412
111413
111414
111415
111416
111417
111418
111419
111420
111421
111422
111423
111424
111425
111426
111427
111428
111429
111430
111431
111432
111433
111434
111435
......
115983
115984
115985
115986
115987
115988
115989
115990
115991
115992
115993
115994
115995
115996
115997
115998
115999
116000
116001
116002
116003
116004
116005
116006
116007
116008
116009
116010
116011
......
116268
116269
116270
116271
116272
116273
116274
116275
116276
116277
116278
116279
116280
116281
116282
116283
116284
116285
116286
116287
116288
116289
116290
116291
116292
116293
116294
116295
116296
......
116721
116722
116723
116724
116725
116726
116727
116728
116729
116730
116731
116732
116733
116734
116735
116736
116737
116738
116739
116740
116741
116742
116743
116744
116745
116746
116747
116748
116749
116750
......
116802
116803
116804
116805
116806
116807
116808

116809

116810
116811
116812
116813
116814
116815
116816
116817
......
119975
119976
119977
119978
119979
119980
119981
119982
119983
119984
119985
119986
119987
119988
119989
119990
119991
119992
119993
119994
119995
119996
119997
119998
119999
120000
120001
120002
120003
120004
120005
120006
120007
120008
......
120146
120147
120148
120149
120150
120151
120152
120153
120154
120155
120156
120157
120158
120159
120160
120161
120162
120163
120164
120165
120166
......
120465
120466
120467
120468
120469
120470
120471
120472
120473
120474
120475
120476
120477
120478
120479
120480
120481
......
120866
120867
120868
120869
120870
120871
120872
120873
120874
120875
120876
120877
120878
120879
120880
......
121180
121181
121182
121183
121184
121185
121186
121187
121188
121189
121190
121191
121192
121193
121194
......
121237
121238
121239
121240
121241
121242
121243
121244
121245
121246
121247
121248
121249
121250
121251
......
121695
121696
121697
121698
121699
121700
121701
121702
121703
121704
121705
121706
121707
121708
121709
121710
121711
121712
121713
121714
121715
121716
121717
121718
121719
121720
121721
121722
121723
121724
121725
121726
121727
121728
121729
121730
121731
121732
121733
121734
121735
121736
121737
121738
121739
121740
121741
121742
121743
121744
121745
121746
121747
121748
121749
121750
121751
121752
121753
121754
121755
121756
121757
121758
121759
121760
121761
121762
121763
121764
121765
121766
121767
121768
121769
121770
121771
121772
121773
121774
121775
121776
121777
121778
121779
121780
121781
121782
121783
121784
121785
121786
121787
121788
121789
121790
121791
121792
121793
121794
121795
121796
121797
121798
121799
121800
121801
121802
121803
121804
121805
121806
121807
121808
121809
......
121819
121820
121821
121822
121823
121824
121825
121826
121827
121828
121829
121830
121831
121832
121833
......
121870
121871
121872
121873
121874
121875
121876


121877
121878
121879
121880
121881
121882
121883
121884
121885
121886
121887
121888
121889
121890
121891
121892
121893
121894
121895
121896
121897
121898
121899
121900
121901
121902
121903
121904
121905
121906
......
121978
121979
121980
121981
121982
121983
121984



121985
121986
121987
121988
121989
121990
121991
......
122044
122045
122046
122047
122048
122049
122050
122051
122052
122053
122054
122055
122056
122057
122058
......
122097
122098
122099
122100
122101
122102
122103
122104
122105
122106
122107
122108
122109
122110
122111
122112
122113
122114
122115
122116
122117
122118
122119
122120
122121
122122
122123
122124
122125
122126
......
122133
122134
122135
122136
122137
122138
122139
122140
122141
122142
122143
122144
122145
122146
122147
122148
122149
122150
122151
122152
122153
122154
122155
122156
122157
122158
122159
122160
122161
122162

122163
122164
122165
122166
122167
122168


122169
122170
122171
122172
122173

122174
122175
122176
122177
122178
122179
122180

122181
122182
122183
122184
122185
122186
122187
......
122289
122290
122291
122292
122293
122294
122295
122296
122297
122298
122299
122300
122301
122302
122303
122304
......
122557
122558
122559
122560
122561
122562
122563


122564


122565
122566
122567
122568
122569
122570
122571
......
122575
122576
122577
122578
122579
122580
122581




































122582
122583
122584
122585
122586
122587
122588
......
123024
123025
123026
123027
123028
123029
123030
123031
123032
123033
123034
123035
123036
123037
123038
......
123551
123552
123553
123554
123555
123556
123557
123558
123559
123560
123561
123562
123563
123564
123565
......
123586
123587
123588
123589
123590
123591
123592
123593
123594
123595
123596
123597
123598
123599
123600
......
123632
123633
123634
123635
123636
123637
123638


123639
123640
123641
123642
123643
123644
123645
123646
123647
123648
123649
123650
123651
123652
123653
123654


123655
123656

123657
123658
123659
123660
123661
123662
123663
......
123698
123699
123700
123701
123702
123703
123704




123705
123706
123707
123708
123709
123710
123711
......
123748
123749
123750
123751
123752
123753
123754
123755
123756
123757
123758
123759
123760
123761
123762
123763
123764
123765
123766
123767
123768
123769
123770
123771
123772
123773

123774
123775
123776
123777
123778
123779
123780
123781
123782
123783
123784
123785
123786
123787
123788
123789

123790
123791
123792
123793
123794
123795
123796
123797
123798
123799
123800
123801
123802
123803
123804
123805
123806
123807
123808
123809
123810
123811
123812
123813
123814
123815
123816
123817
123818
123819
123820
123821
123822
123823
123824
123825
123826
123827
123828
123829
123830
123831
123832
123833
123834
123835
123836
123837
123838
123839
123840
123841

123842
123843
123844
123845
123846
123847
123848
123849
123850
123851
123852
123853
123854
123855
123856
123857
123858

123859
123860
123861
123862
123863
123864
123865
123866
123867
123868
123869
123870
123871
123872
123873
123874
123875
123876
123877
123878
123879
123880
123881
123882
123883
123884
123885
123886
123887
123888
123889
123890
123891
123892
123893
123894
123895
123896
123897
123898
123899
123900
123901
123902
123903
123904
123905
123906
123907
123908
123909
123910
123911
123912
123913
123914
123915
123916
123917
123918
123919
123920
123921
123922

123923
123924
123925
123926
123927
123928
123929
123930
123931
123932
123933
123934
123935
123936

123937
123938
123939
123940
123941
123942
123943
123944
123945
123946
123947
123948
123949
123950
123951
123952
123953
123954
123955
123956
123957
123958
123959
123960
123961
123962
123963
123964
123965
123966
123967
123968
123969
123970
123971
123972

123973
123974
123975
123976
123977
123978
123979
123980
123981
123982
123983
123984
123985
123986
......
124310
124311
124312
124313
124314
124315
124316




124317
124318
124319
124320
124321
124322
124323
......
124429
124430
124431
124432
124433
124434
124435
124436
124437
124438
124439
124440
124441
124442
124443
124444
124445
124446
124447
124448
124449
124450
124451
124452
......
124453
124454
124455
124456
124457
124458
124459
124460
124461
124462
124463
124464
124465
124466
124467
......
124565
124566
124567
124568
124569
124570
124571
124572
124573
124574
124575
124576
124577
124578
124579
......
126353
126354
126355
126356
126357
126358
126359
126360
126361
126362
126363
126364



126365
126366
126367
126368
126369
126370
126371
......
126570
126571
126572
126573
126574
126575
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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.24.0"
#define SQLITE_VERSION_NUMBER 3024000
#define SQLITE_SOURCE_ID      "2018-05-14 00:41:12 d0f35739af3b226c8eef39676407293650cde551acef06fe8628fdd5b59bd66a"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** behavior. The first parameter passed to this operation is an integer -
** positive to enable output for trigger programs, or zero to disable it,
** or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which is written 
** 0 or 1 to indicate whether output-for-triggers has been disabled - 0 if 
** it is not disabled, 1 if it is.  
** </dd>
**
** <dt>SQLITE_DBCONFIG_RESET_DATABASE</dt>
** <dd> Set the SQLITE_DBCONFIG_RESET_DATABASE flag and then run
** [VACUUM] in order to reset a database back to an empty database
** with no schema and no content. The following process works even for
** a badly corrupted database file:
** <ol>
** <li> sqlite3_db_config(db, SQLITE_DBCONFIG_RESET_DATABASE, 1, 0);
** <li> [sqlite3_exec](db, "[VACUUM]", 0, 0, 0);
** <li> sqlite3_db_config(db, SQLITE_DBCONFIG_RESET_DATABASE, 0, 0);
** </ol>
** Because resetting a database is destructive and irreversible, the
** process requires the use of this obscure API and multiple steps to help
** ensure that it does not happen by accident.
** </dd>
** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */
#define SQLITE_DBCONFIG_RESET_DATABASE        1009 /* int int* */
#define SQLITE_DBCONFIG_MAX                   1009 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
** made NULL or made to point to memory obtained from [sqlite3_malloc]
** or else the use of the [data_store_directory pragma] should be avoided.
*/
SQLITE_API char *sqlite3_data_directory;

/*
** CAPI3REF: Win32 Specific Interface
**
** These interfaces are available only on Windows.  The
** [sqlite3_win32_set_directory] interface is used to set the value associated
** with the [sqlite3_temp_directory] or [sqlite3_data_directory] variable, to
** zValue, depending on the value of the type parameter.  The zValue parameter
** should be NULL to cause the previous value to be freed via [sqlite3_free];
** a non-NULL value will be copied into memory obtained from [sqlite3_malloc]
** prior to being used.  The [sqlite3_win32_set_directory] interface returns
** [SQLITE_OK] to indicate success, [SQLITE_ERROR] if the type is unsupported,
** or [SQLITE_NOMEM] if memory could not be allocated.  The value of the
** [sqlite3_data_directory] variable is intended to act as a replacement for
** the current directory on the sub-platforms of Win32 where that concept is
** not present, e.g. WinRT and UWP.  The [sqlite3_win32_set_directory8] and
** [sqlite3_win32_set_directory16] interfaces behave exactly the same as the
** sqlite3_win32_set_directory interface except the string parameter must be
** UTF-8 or UTF-16, respectively.
*/
SQLITE_API int sqlite3_win32_set_directory(
  unsigned long type, /* Identifier for directory being set or reset */
  void *zValue        /* New value for directory being set or reset */
);
SQLITE_API int sqlite3_win32_set_directory8(unsigned long type, const char *zValue);
SQLITE_API int sqlite3_win32_set_directory16(unsigned long type, const void *zValue);

/*
** CAPI3REF: Win32 Directory Types
**
** These macros are only available on Windows.  They define the allowed values
** for the type argument to the [sqlite3_win32_set_directory] interface.
*/
#define SQLITE_WIN32_DATA_DIRECTORY_TYPE  1
#define SQLITE_WIN32_TEMP_DIRECTORY_TYPE  2

/*
** CAPI3REF: Test For Auto-Commit Mode
** KEYWORDS: {autocommit mode}
** METHOD: sqlite3
**
** ^The sqlite3_get_autocommit() interface returns non-zero or
** zero if the given database connection is or is not in autocommit mode,
................................................................................
** parsing ambiguity.  For example, the statement
** "CREATE TABLE BEGIN(REPLACE,PRAGMA,END);" is accepted by SQLite, and
** creates a new table named "BEGIN" with three columns named
** "REPLACE", "PRAGMA", and "END".  Nevertheless, best practice is to avoid
** using keywords as identifiers.  Common techniques used to avoid keyword
** name collisions include:
** <ul>
** <li> Put all identifier names inside double-quotes.  This is the official
**      SQL way to escape identifier names.
** <li> Put identifier names inside &#91;...&#93;.  This is not standard SQL,
**      but it is what SQL Server does and so lots of programmers use this
**      technique.
** <li> Begin every identifier with the letter "Z" as no SQL keywords start
**      with "Z".
** <li> Include a digit somewhere in every identifier name.
................................................................................
** SQLite is compiled with the [-DSQLITE_OMIT_VACUUM] option.  Also,
** new keywords may be added to future releases of SQLite.
*/
SQLITE_API int sqlite3_keyword_count(void);
SQLITE_API int sqlite3_keyword_name(int,const char**,int*);
SQLITE_API int sqlite3_keyword_check(const char*,int);

/*
** CAPI3REF: Dynamic String Object
** KEYWORDS: {dynamic string}
**
** An instance of the sqlite3_str object contains a dynamically-sized
** string under construction.
**
** The lifecycle of an sqlite3_str object is as follows:
** <ol>
** <li> ^The sqlite3_str object is created using [sqlite3_str_new()].
** <li> ^Text is appended to the sqlite3_str object using various
** methods, such as [sqlite3_str_appendf()].
** <li> ^The sqlite3_str object is destroyed and the string it created
** is returned using the [sqlite3_str_finish()] interface.
** </ol>
*/
typedef struct sqlite3_str sqlite3_str;

/*
** CAPI3REF: Create A New Dynamic String Object
** CONSTRUCTOR: sqlite3_str
**
** ^The [sqlite3_str_new(D)] interface allocates and initializes
** a new [sqlite3_str]
** object.  ^The [sqlite3_str_new()] interface returns NULL on an out-of-memory
** condition.  To avoid memory leaks, the object returned by
** [sqlite3_str_new()] must be freed by a subsequent call to 
** [sqlite3_str_finish(X)].
**
** The D parameter to [sqlite3_str_new(D)] may be NULL.  If the
** D parameter in [sqlite3_str_new(D)] is not NULL, then the maximum
** length of the string contained in the [sqlite3_str] object will be
** the value set for [sqlite3_limit](D,[SQLITE_LIMIT_LENGTH]) instead
** of [SQLITE_MAX_LENGTH].
*/
SQLITE_API sqlite3_str *sqlite3_str_new(sqlite3*);

/*
** CAPI3REF: Finalize A Dynamic String
** DESTRUCTOR: sqlite3_str
**
** ^The [sqlite3_str_finish(X)] interface destroys the sqlite3_str object X
** and returns a pointer to a memory buffer obtained from [sqlite3_malloc64()]
** that contains the constructed string.  The calling application should
** pass the returned value to [sqlite3_free()] to avoid a memory leak.
** ^The [sqlite3_str_finish(X)] interface may return a NULL pointer if any
** errors were encountered during construction of the string.  ^The
** [sqlite3_str_finish(X)] interface will also return a NULL pointer if the
** string in [sqlite3_str] object X is zero bytes long.
*/
SQLITE_API char *sqlite3_str_finish(sqlite3_str*);

/*
** CAPI3REF: Add Content To A Dynamic String
** METHOD: sqlite3_str
**
** These interfaces add content to an sqlite3_str object previously obtained
** from [sqlite3_str_new()].
**
** ^The [sqlite3_str_appendf(X,F,...)] and 
** [sqlite3_str_vappendf(X,F,V)] interfaces uses the [built-in printf]
** functionality of SQLite to append formatted text onto the end of 
** [sqlite3_str] object X.
**
** ^The [sqlite3_str_append(X,S,N)] method appends exactly N bytes from string S
** onto the end of the [sqlite3_str] object X.  N must be non-negative.
** S must contain at least N non-zero bytes of content.  To append a
** zero-terminated string in its entirety, use the [sqlite3_str_appendall()]
** method instead.
**
** ^The [sqlite3_str_appendall(X,S)] method appends the complete content of
** zero-terminated string S onto the end of [sqlite3_str] object X.
**
** ^The [sqlite3_str_appendchar(X,N,C)] method appends N copies of the
** single-byte character C onto the end of [sqlite3_str] object X.
** ^This method can be used, for example, to add whitespace indentation.
**
** ^The [sqlite3_str_reset(X)] method resets the string under construction
** inside [sqlite3_str] object X back to zero bytes in length.  
**
** These methods do not return a result code.  ^If an error occurs, that fact
** is recorded in the [sqlite3_str] object and can be recovered by a
** subsequent call to [sqlite3_str_errcode(X)].
*/
SQLITE_API void sqlite3_str_appendf(sqlite3_str*, const char *zFormat, ...);
SQLITE_API void sqlite3_str_vappendf(sqlite3_str*, const char *zFormat, va_list);
SQLITE_API void sqlite3_str_append(sqlite3_str*, const char *zIn, int N);
SQLITE_API void sqlite3_str_appendall(sqlite3_str*, const char *zIn);
SQLITE_API void sqlite3_str_appendchar(sqlite3_str*, int N, char C);
SQLITE_API void sqlite3_str_reset(sqlite3_str*);

/*
** CAPI3REF: Status Of A Dynamic String
** METHOD: sqlite3_str
**
** These interfaces return the current status of an [sqlite3_str] object.
**
** ^If any prior errors have occurred while constructing the dynamic string
** in sqlite3_str X, then the [sqlite3_str_errcode(X)] method will return
** an appropriate error code.  ^The [sqlite3_str_errcode(X)] method returns
** [SQLITE_NOMEM] following any out-of-memory error, or
** [SQLITE_TOOBIG] if the size of the dynamic string exceeds
** [SQLITE_MAX_LENGTH], or [SQLITE_OK] if there have been no errors.
**
** ^The [sqlite3_str_length(X)] method returns the current length, in bytes,
** of the dynamic string under construction in [sqlite3_str] object X.
** ^The length returned by [sqlite3_str_length(X)] does not include the
** zero-termination byte.
**
** ^The [sqlite3_str_value(X)] method returns a pointer to the current
** content of the dynamic string under construction in X.  The value
** returned by [sqlite3_str_value(X)] is managed by the sqlite3_str object X
** and might be freed or altered by any subsequent method on the same
** [sqlite3_str] object.  Applications must not used the pointer returned
** [sqlite3_str_value(X)] after any subsequent method call on the same
** object.  ^Applications may change the content of the string returned
** by [sqlite3_str_value(X)] as long as they do not write into any bytes
** outside the range of 0 to [sqlite3_str_length(X)] and do not read or
** write any byte after any subsequent sqlite3_str method call.
*/
SQLITE_API int sqlite3_str_errcode(sqlite3_str*);
SQLITE_API int sqlite3_str_length(sqlite3_str*);
SQLITE_API char *sqlite3_str_value(sqlite3_str*);

/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes
................................................................................
typedef struct PrintfArguments PrintfArguments;
typedef struct RowSet RowSet;
typedef struct Savepoint Savepoint;
typedef struct Select Select;
typedef struct SQLiteThread SQLiteThread;
typedef struct SelectDest SelectDest;
typedef struct SrcList SrcList;
typedef struct sqlite3_str StrAccum; /* Internal alias for sqlite3_str */
typedef struct Table Table;
typedef struct TableLock TableLock;
typedef struct Token Token;
typedef struct TreeView TreeView;
typedef struct Trigger Trigger;
typedef struct TriggerPrg TriggerPrg;
typedef struct TriggerStep TriggerStep;
................................................................................
#define BTREE_AUXDELETE    0x04  /* not the primary delete operation */
#define BTREE_APPEND       0x08  /* Insert is likely an append */

/* An instance of the BtreePayload object describes the content of a single
** entry in either an index or table btree.
**
** Index btrees (used for indexes and also WITHOUT ROWID tables) contain
** an arbitrary key and no data.  These btrees have pKey,nKey set to the
** key and the pData,nData,nZero fields are uninitialized.  The aMem,nMem
** fields give an array of Mem objects that are a decomposition of the key.
** The nMem field might be zero, indicating that no decomposition is available.
**
** Table btrees (used for rowid tables) contain an integer rowid used as
** the key and passed in the nKey field.  The pKey field is zero.  
** pData,nData hold the content of the new entry.  nZero extra zero bytes
** are appended to the end of the content when constructing the entry.
** The aMem,nMem fields are uninitialized for table btrees.
**
** Field usage summary:
**
**               Table BTrees                   Index Btrees
**
**   pKey        always NULL                    encoded key
**   nKey        the ROWID                      length of pKey
**   pData       data                           not used
**   aMem        not used                       decomposed key value
**   nMem        not used                       entries in aMem
**   nData       length of pData                not used
**   nZero       extra zeros after pData        not used
**
** This object is used to pass information into sqlite3BtreeInsert().  The
** same information used to be passed as five separate parameters.  But placing
** the information into this object helps to keep the interface more 
** organized and understandable, and it also helps the resulting code to
** run a little faster by using fewer registers for parameter passing.
*/
struct BtreePayload {
  const void *pKey;       /* Key content for indexes.  NULL for tables */
  sqlite3_int64 nKey;     /* Size of pKey for indexes.  PRIMARY KEY for tabs */
  const void *pData;      /* Data for tables. */
  sqlite3_value *aMem;    /* First of nMem value in the unpacked pKey */
  u16 nMem;               /* Number of aMem[] value.  Might be zero */
  int nData;              /* Size of pData.  0 if none. */
  int nZero;              /* Extra zero data appended after pData,nData */
};

SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const BtreePayload *pPayload,
................................................................................
#if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS)
SQLITE_PRIVATE   void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N);
SQLITE_PRIVATE   void sqlite3VdbeVerifyNoResultRow(Vdbe *p);
#else
# define sqlite3VdbeVerifyNoMallocRequired(A,B)
# define sqlite3VdbeVerifyNoResultRow(A)
#endif
SQLITE_PRIVATE VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp,int iLineno);
#ifndef SQLITE_OMIT_EXPLAIN
SQLITE_PRIVATE   void sqlite3VdbeExplain(Parse*,u8,const char*,...);
SQLITE_PRIVATE   void sqlite3VdbeExplainPop(Parse*);
SQLITE_PRIVATE   int sqlite3VdbeExplainParent(Parse*);
# define ExplainQueryPlan(P)        sqlite3VdbeExplain P
# define ExplainQueryPlanPop(P)     sqlite3VdbeExplainPop(P)
# define ExplainQueryPlanParent(P)  sqlite3VdbeExplainParent(P)
#else
# define ExplainQueryPlan(P)
# define ExplainQueryPlanPop(P)
# define ExplainQueryPlanParent(P) 0
#endif
SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
................................................................................
#define SQLITE_EnableTrigger  0x00040000  /* True to enable triggers */
#define SQLITE_DeferFKs       0x00080000  /* Defer all FK constraints */
#define SQLITE_QueryOnly      0x00100000  /* Disable database changes */
#define SQLITE_CellSizeCk     0x00200000  /* Check btree cell sizes on load */
#define SQLITE_Fts3Tokenizer  0x00400000  /* Enable fts3_tokenizer(2) */
#define SQLITE_EnableQPSG     0x00800000  /* Query Planner Stability Guarantee*/
#define SQLITE_TriggerEQP     0x01000000  /* Show trigger EXPLAIN QUERY PLAN */
#define SQLITE_ResetDatabase  0x02000000  /* Reset the database */

/* Flags used only if debugging */
#ifdef SQLITE_DEBUG
#define SQLITE_SqlTrace       0x08000000  /* Debug print SQL as it executes */
#define SQLITE_VdbeListing    0x10000000  /* Debug listings of VDBE programs */
#define SQLITE_VdbeTrace      0x20000000  /* True to trace VDBE execution */
#define SQLITE_VdbeAddopTrace 0x40000000  /* Trace sqlite3VdbeAddOp() calls */
................................................................................
      unsigned notIndexed :1;    /* True if there is a NOT INDEXED clause */
      unsigned isIndexedBy :1;   /* True if there is an INDEXED BY clause */
      unsigned isTabFunc :1;     /* True if table-valued-function syntax */
      unsigned isCorrelated :1;  /* True if sub-query is correlated */
      unsigned viaCoroutine :1;  /* Implemented as a co-routine */
      unsigned isRecursive :1;   /* True for recursive reference in WITH */
    } fg;



    int iCursor;      /* The VDBE cursor number used to access this table */
    Expr *pOn;        /* The ON clause of a join */
    IdList *pUsing;   /* The USING clause of a join */
    Bitmask colUsed;  /* Bit N (1<<N) set if column N of pTab is used */
    union {
      char *zIndexedBy;    /* Identifier from "INDEXED BY <zIndex>" clause */
      ExprList *pFuncArg;  /* Arguments to table-valued-function */
................................................................................
  int iIdxCur;              /* Index of the first index cursor */
};

/*
** An instance of the following structure contains all information
** needed to generate code for a single SELECT statement.
**
** See the header comment on the computeLimitRegisters() routine for a
** detailed description of the meaning of the iLimit and iOffset fields.



**
** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
** These addresses must be stored so that we can go back and fill in
** the P4_KEYINFO and P2 parameters later.  Neither the KeyInfo nor
** the number of columns in P2 can be computed at the same time
** as the OP_OpenEphm instruction is coded because not
** enough information about the compound query is known at that point.
................................................................................
  ExprList *pEList;      /* The fields of the result */
  u8 op;                 /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
  LogEst nSelectRow;     /* Estimated number of result rows */
  u32 selFlags;          /* Various SF_* values */
  int iLimit, iOffset;   /* Memory registers holding LIMIT & OFFSET counters */
#if SELECTTRACE_ENABLED
  char zSelName[12];     /* Symbolic name of this SELECT use for debugging */

#endif
  int addrOpenEphm[2];   /* OP_OpenEphem opcodes related to this select */
  SrcList *pSrc;         /* The FROM clause */
  Expr *pWhere;          /* The WHERE clause */
  ExprList *pGroupBy;    /* The GROUP BY clause */
  Expr *pHaving;         /* The HAVING clause */
  ExprList *pOrderBy;    /* The ORDER BY clause */
................................................................................
#define SF_NestedFrom     0x00800  /* Part of a parenthesized FROM clause */
#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
#define SF_ComplexResult  0x40000  /* Result contains subquery or function */


/*
** The results of a SELECT can be distributed in several ways, as defined
** by one of the following macros.  The "SRT" prefix means "SELECT Result
** Type".
**
**     SRT_Union       Store results as a key in a temporary index
................................................................................
  u8 explain;               /* True if the EXPLAIN flag is found on the query */
#ifndef SQLITE_OMIT_VIRTUALTABLE
  u8 declareVtab;           /* True if inside sqlite3_declare_vtab() */
  int nVtabLock;            /* Number of virtual tables to lock */
#endif
  int nHeight;              /* Expression tree height of current sub-select */
#ifndef SQLITE_OMIT_EXPLAIN
  int addrExplain;          /* Address of current OP_Explain opcode */

#endif
  VList *pVList;            /* Mapping between variable names and numbers */
  Vdbe *pReprepare;         /* VM being reprepared (sqlite3Reprepare()) */
  const char *zTail;        /* All SQL text past the last semicolon parsed */
  Table *pNewTable;         /* A table being constructed by CREATE TABLE */
  Trigger *pNewTrigger;     /* Trigger under construct by a CREATE TRIGGER */
  const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
................................................................................
  const Token *pName; /* Name of the container - used for error messages */
};

/*
** An objected used to accumulate the text of a string where we
** do not necessarily know how big the string will be in the end.
*/
struct sqlite3_str {
  sqlite3 *db;         /* Optional database for lookaside.  Can be NULL */
  char *zText;         /* The string collected so far */
  u32  nAlloc;         /* Amount of space allocated in zText */
  u32  mxAlloc;        /* Maximum allowed allocation.  0 for no malloc usage */
  u32  nChar;          /* Length of the string so far */
  u8   accError;       /* SQLITE_NOMEM or SQLITE_TOOBIG */
  u8   printfFlags;    /* SQLITE_PRINTF flags below */
};


#define SQLITE_PRINTF_INTERNAL 0x01  /* Internal-use-only converters allowed */
#define SQLITE_PRINTF_SQLFUNC  0x02  /* SQL function arguments to VXPrintf */
#define SQLITE_PRINTF_MALLOCED 0x04  /* True if xText is allocated space */

#define isMalloced(X)  (((X)->printfFlags & SQLITE_PRINTF_MALLOCED)!=0)


................................................................................
*/
struct PrintfArguments {
  int nArg;                /* Total number of arguments */
  int nUsed;               /* Number of arguments used so far */
  sqlite3_value **apArg;   /* The argument values */
};



SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...);
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
SQLITE_PRIVATE   void sqlite3DebugPrintf(const char*, ...);
#endif
#if defined(SQLITE_TEST)
SQLITE_PRIVATE   void *sqlite3TestTextToPtr(const char*);
................................................................................
);
SQLITE_PRIVATE void sqlite3OomFault(sqlite3*);
SQLITE_PRIVATE void sqlite3OomClear(sqlite3*);
SQLITE_PRIVATE int sqlite3ApiExit(sqlite3 *db, int);
SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *);

SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum*, sqlite3*, char*, int, int);



SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum*);

SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest*,int,int);
SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *, SrcList *, int, int);

SQLITE_PRIVATE void sqlite3BackupRestart(sqlite3_backup *);
SQLITE_PRIVATE void sqlite3BackupUpdate(sqlite3_backup *, Pgno, const u8 *);

#ifndef SQLITE_OMIT_SUBQUERY
................................................................................
  assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld );
  return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p);
}
#endif

#endif /* !defined(SQLITE_MUTEX_OMIT) */


/************** End of mutex.c ***********************************************/
/************** Begin file mutex_noop.c **************************************/
/*
** 2008 October 07
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
................................................................................
}
#endif /* SQLITE_OMIT_FLOATING_POINT */

/*
** Set the StrAccum object to an error mode.
*/
static void setStrAccumError(StrAccum *p, u8 eError){
  assert( eError==SQLITE_NOMEM || eError==SQLITE_TOOBIG );
  p->accError = eError;
  p->nAlloc = 0;
}

/*
** Extra argument values from a PrintfArguments object
*/
................................................................................
# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE  /* Size of the output buffer */

/*
** Render a string given by "fmt" into the StrAccum object.
*/
SQLITE_API void sqlite3_str_vappendf(
  sqlite3_str *pAccum,       /* Accumulate results here */
  const char *fmt,           /* Format string */
  va_list ap                 /* arguments */
){
  int c;                     /* Next character in the format string */
  char *bufpt;               /* Pointer to the conversion buffer */
  int precision;             /* Precision of the current field */
  int length;                /* Length of the field */
................................................................................
    if( c!='%' ){
      bufpt = (char *)fmt;
#if HAVE_STRCHRNUL
      fmt = strchrnul(fmt, '%');
#else
      do{ fmt++; }while( *fmt && *fmt != '%' );
#endif
      sqlite3_str_append(pAccum, bufpt, (int)(fmt - bufpt));
      if( *fmt==0 ) break;
    }
    if( (c=(*++fmt))==0 ){
      sqlite3_str_append(pAccum, "%", 1);
      break;
    }
    /* Find out what flags are present */
    flag_leftjustify = flag_prefix = cThousand =
     flag_alternateform = flag_altform2 = flag_zeropad = 0;
    done = 0;
    do{
................................................................................
        if( precision<etBUFSIZE-10-etBUFSIZE/3 ){
          nOut = etBUFSIZE;
          zOut = buf;
        }else{
          u64 n = (u64)precision + 10 + precision/3;
          zOut = zExtra = sqlite3Malloc( n );
          if( zOut==0 ){
            setStrAccumError(pAccum, SQLITE_NOMEM);
            return;
          }
          nOut = (int)n;
        }
        bufpt = &zOut[nOut-1];
        if( xtype==etORDINAL ){
          static const char zOrd[] = "thstndrd";
................................................................................
        }else{
          e2 = exp;
        }
        if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){
          bufpt = zExtra 
              = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 );
          if( bufpt==0 ){
            setStrAccumError(pAccum, SQLITE_NOMEM);
            return;
          }
        }
        zOut = bufpt;
        nsd = 16 + flag_altform2*10;
        flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
        /* The sign in front of the number */
................................................................................
            buf[3] = 0x80 + (u8)(ch & 0x3f);
            length = 4;
          }
        }
        if( precision>1 ){
          width -= precision-1;
          if( width>1 && !flag_leftjustify ){
            sqlite3_str_appendchar(pAccum, width-1, ' ');
            width = 0;
          }
          while( precision-- > 1 ){
            sqlite3_str_append(pAccum, buf, length);
          }
        }
        bufpt = buf;
        flag_altform2 = 1;
        goto adjust_width_for_utf8;
      case etSTRING:
      case etDYNSTRING:
................................................................................
          }
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 3;
        if( n>etBUFSIZE ){
          bufpt = zExtra = sqlite3Malloc( n );
          if( bufpt==0 ){
            setStrAccumError(pAccum, SQLITE_NOMEM);
            return;
          }
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = q;
................................................................................
      }
      case etTOKEN: {
        Token *pToken;
        if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return;
        pToken = va_arg(ap, Token*);
        assert( bArgList==0 );
        if( pToken && pToken->n ){
          sqlite3_str_append(pAccum, (const char*)pToken->z, pToken->n);
        }
        length = width = 0;
        break;
      }
      case etSRCLIST: {
        SrcList *pSrc;
        int k;
................................................................................
        if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return;
        pSrc = va_arg(ap, SrcList*);
        k = va_arg(ap, int);
        pItem = &pSrc->a[k];
        assert( bArgList==0 );
        assert( k>=0 && k<pSrc->nSrc );
        if( pItem->zDatabase ){
          sqlite3_str_appendall(pAccum, pItem->zDatabase);
          sqlite3_str_append(pAccum, ".", 1);
        }
        sqlite3_str_appendall(pAccum, pItem->zName);
        length = width = 0;
        break;
      }
      default: {
        assert( xtype==etINVALID );
        return;
      }
................................................................................
    ** the output.  Both length and width are in bytes, not characters,
    ** at this point.  If the "!" flag was present on string conversions
    ** indicating that width and precision should be expressed in characters,
    ** then the values have been translated prior to reaching this point.
    */
    width -= length;
    if( width>0 ){
      if( !flag_leftjustify ) sqlite3_str_appendchar(pAccum, width, ' ');
      sqlite3_str_append(pAccum, bufpt, length);
      if( flag_leftjustify ) sqlite3_str_appendchar(pAccum, width, ' ');
    }else{
      sqlite3_str_append(pAccum, bufpt, length);
    }

    if( zExtra ){
      sqlite3DbFree(pAccum->db, zExtra);
      zExtra = 0;
    }
  }/* End for loop over the format string */
................................................................................
** Return the number of bytes of text that StrAccum is able to accept
** after the attempted enlargement.  The value returned might be zero.
*/
static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
  char *zNew;
  assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */
  if( p->accError ){
    testcase(p->accError==SQLITE_TOOBIG);
    testcase(p->accError==SQLITE_NOMEM);
    return 0;
  }
  if( p->mxAlloc==0 ){
    N = p->nAlloc - p->nChar - 1;
    setStrAccumError(p, SQLITE_TOOBIG);
    return N;
  }else{
    char *zOld = isMalloced(p) ? p->zText : 0;
    i64 szNew = p->nChar;
    szNew += N + 1;
    if( szNew+p->nChar<=p->mxAlloc ){
      /* Force exponential buffer size growth as long as it does not overflow,
      ** to avoid having to call this routine too often */
      szNew += p->nChar;
    }
    if( szNew > p->mxAlloc ){
      sqlite3_str_reset(p);
      setStrAccumError(p, SQLITE_TOOBIG);
      return 0;
    }else{
      p->nAlloc = (int)szNew;
    }
    if( p->db ){
      zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
    }else{
................................................................................
    if( zNew ){
      assert( p->zText!=0 || p->nChar==0 );
      if( !isMalloced(p) && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
      p->zText = zNew;
      p->nAlloc = sqlite3DbMallocSize(p->db, zNew);
      p->printfFlags |= SQLITE_PRINTF_MALLOCED;
    }else{
      sqlite3_str_reset(p);
      setStrAccumError(p, SQLITE_NOMEM);
      return 0;
    }
  }
  return N;
}

/*
** Append N copies of character c to the given string buffer.
*/
SQLITE_API void sqlite3_str_appendchar(sqlite3_str *p, int N, char c){
  testcase( p->nChar + (i64)N > 0x7fffffff );
  if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){
    return;
  }
  while( (N--)>0 ) p->zText[p->nChar++] = c;
}

/*
** The StrAccum "p" is not large enough to accept N new bytes of z[].
** So enlarge if first, then do the append.
**
** This is a helper routine to sqlite3_str_append() that does special-case
** work (enlarging the buffer) using tail recursion, so that the
** sqlite3_str_append() routine can use fast calling semantics.
*/
static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){
  N = sqlite3StrAccumEnlarge(p, N);
  if( N>0 ){
    memcpy(&p->zText[p->nChar], z, N);
    p->nChar += N;
  }
}

/*
** Append N bytes of text from z to the StrAccum object.  Increase the
** size of the memory allocation for StrAccum if necessary.
*/
SQLITE_API void sqlite3_str_append(sqlite3_str *p, const char *z, int N){
  assert( z!=0 || N==0 );
  assert( p->zText!=0 || p->nChar==0 || p->accError );
  assert( N>=0 );
  assert( p->accError==0 || p->nAlloc==0 );
  if( p->nChar+N >= p->nAlloc ){
    enlargeAndAppend(p,z,N);
  }else if( N ){
................................................................................
    memcpy(&p->zText[p->nChar-N], z, N);
  }
}

/*
** Append the complete text of zero-terminated string z[] to the p string.
*/
SQLITE_API void sqlite3_str_appendall(sqlite3_str *p, const char *z){
  sqlite3_str_append(p, z, sqlite3Strlen30(z));
}


/*
** Finish off a string by making sure it is zero-terminated.
** Return a pointer to the resulting string.  Return a NULL
** pointer if any kind of error was encountered.
................................................................................
  char *zText;
  assert( p->mxAlloc>0 && !isMalloced(p) );
  zText = sqlite3DbMallocRaw(p->db, p->nChar+1 );
  if( zText ){
    memcpy(zText, p->zText, p->nChar+1);
    p->printfFlags |= SQLITE_PRINTF_MALLOCED;
  }else{
    setStrAccumError(p, SQLITE_NOMEM);
  }
  p->zText = zText;
  return zText;
}
SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){
  if( p->zText ){
    p->zText[p->nChar] = 0;
    if( p->mxAlloc>0 && !isMalloced(p) ){
      return strAccumFinishRealloc(p);
    }
  }
  return p->zText;
}

/* Finalize a string created using sqlite3_str_new().
*/
SQLITE_API char *sqlite3_str_finish(sqlite3_str *p){
  char *z;
  if( p ){
    z = sqlite3StrAccumFinish(p);
    sqlite3_free(p);
  }else{
    z = 0;
  }
  return z;
}

/* Return any error code associated with p */
SQLITE_API int sqlite3_str_errcode(sqlite3_str *p){
  return p ? p->accError : SQLITE_NOMEM;
}

/* Return the current length of p in bytes */
SQLITE_API int sqlite3_str_length(sqlite3_str *p){
  return p ? p->nChar : 0;
}

/* Return the current value for p */
SQLITE_API char *sqlite3_str_value(sqlite3_str *p){
  if( p==0 || p->nChar==0 ) return 0;
  p->zText[p->nChar] = 0;
  return p->zText;
}

/*
** Reset an StrAccum string.  Reclaim all malloced memory.
*/

SQLITE_API void sqlite3_str_reset(StrAccum *p){
  if( isMalloced(p) ){
    sqlite3DbFree(p->db, p->zText);
    p->printfFlags &= ~SQLITE_PRINTF_MALLOCED;
  }
  p->nAlloc = 0;
  p->nChar = 0;
  p->zText = 0;
}

/*
** Initialize a string accumulator.
**
** p:     The accumulator to be initialized.
................................................................................
  p->db = db;
  p->nAlloc = n;
  p->mxAlloc = mx;
  p->nChar = 0;
  p->accError = 0;
  p->printfFlags = 0;
}

/* Allocate and initialize a new dynamic string object */
SQLITE_API sqlite3_str *sqlite3_str_new(sqlite3 *db){
  sqlite3_str *p = sqlite3_malloc64(sizeof(*p));
  if( p ){
    sqlite3StrAccumInit(p, 0, 0, 0,
            db ? db->aLimit[SQLITE_LIMIT_LENGTH] : SQLITE_MAX_LENGTH);
  }
  return p;
}

/*
** Print into memory obtained from sqliteMalloc().  Use the internal
** %-conversion extensions.
*/
SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){
  char *z;
  char zBase[SQLITE_PRINT_BUF_SIZE];
  StrAccum acc;
  assert( db!=0 );
  sqlite3StrAccumInit(&acc, db, zBase, sizeof(zBase),
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  acc.printfFlags = SQLITE_PRINTF_INTERNAL;
  sqlite3_str_vappendf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  if( acc.accError==SQLITE_NOMEM ){
    sqlite3OomFault(db);
  }
  return z;
}

/*
** Print into memory obtained from sqliteMalloc().  Use the internal
................................................................................
    return 0;
  }
#endif
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  sqlite3StrAccumInit(&acc, 0, zBase, sizeof(zBase), SQLITE_MAX_LENGTH);
  sqlite3_str_vappendf(&acc, zFormat, ap);
  z = sqlite3StrAccumFinish(&acc);
  return z;
}

/*
** Print into memory obtained from sqlite3_malloc()().  Omit the internal
** %-conversion extensions.
................................................................................
  if( zBuf==0 || zFormat==0 ) {
    (void)SQLITE_MISUSE_BKPT;
    if( zBuf ) zBuf[0] = 0;
    return zBuf;
  }
#endif
  sqlite3StrAccumInit(&acc, 0, zBuf, n, 0);
  sqlite3_str_vappendf(&acc, zFormat, ap);
  zBuf[acc.nChar] = 0;
  return zBuf;
}
SQLITE_API char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
  char *z;
  va_list ap;
  va_start(ap,zFormat);
................................................................................
** We house it in a separate routine from sqlite3_log() to avoid using
** stack space on small-stack systems when logging is disabled.
**
** sqlite3_log() must render into a static buffer.  It cannot dynamically
** allocate memory because it might be called while the memory allocator
** mutex is held.
**
** sqlite3_str_vappendf() might ask for *temporary* memory allocations for
** certain format characters (%q) or for very large precisions or widths.
** Care must be taken that any sqlite3_log() calls that occur while the
** memory mutex is held do not use these mechanisms.
*/
static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){
  StrAccum acc;                          /* String accumulator */
  char zMsg[SQLITE_PRINT_BUF_SIZE*3];    /* Complete log message */

  sqlite3StrAccumInit(&acc, 0, zMsg, sizeof(zMsg), 0);
  sqlite3_str_vappendf(&acc, zFormat, ap);
  sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode,
                           sqlite3StrAccumFinish(&acc));
}

/*
** Format and write a message to the log if logging is enabled.
*/
................................................................................
*/
SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){
  va_list ap;
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  va_start(ap,zFormat);
  sqlite3_str_vappendf(&acc, zFormat, ap);
  va_end(ap);
  sqlite3StrAccumFinish(&acc);
#ifdef SQLITE_OS_TRACE_PROC
  {
    extern void SQLITE_OS_TRACE_PROC(const char *zBuf, int nBuf);
    SQLITE_OS_TRACE_PROC(zBuf, sizeof(zBuf));
  }
................................................................................
  fflush(stdout);
#endif
}
#endif


/*
** variable-argument wrapper around sqlite3_str_vappendf(). The bFlags argument
** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats.
*/
SQLITE_API void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){
  va_list ap;
  va_start(ap,zFormat);
  sqlite3_str_vappendf(p, zFormat, ap);
  va_end(ap);
}

/************** End of printf.c **********************************************/
/************** Begin file treeview.c ****************************************/
/*
** 2015-06-08
................................................................................
  va_list ap;
  int i;
  StrAccum acc;
  char zBuf[500];
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  if( p ){
    for(i=0; i<p->iLevel && i<sizeof(p->bLine)-1; i++){
      sqlite3_str_append(&acc, p->bLine[i] ? "|   " : "    ", 4);
    }
    sqlite3_str_append(&acc, p->bLine[i] ? "|-- " : "'-- ", 4);
  }
  if( zFormat!=0 ){
    va_start(ap, zFormat);
    sqlite3_str_vappendf(&acc, zFormat, ap);
    va_end(ap);
    assert( acc.nChar>0 );
    sqlite3_str_append(&acc, "\n", 1);
  }
  sqlite3StrAccumFinish(&acc);
  fprintf(stdout,"%s", zBuf);
  fflush(stdout);
}

/*
................................................................................
  if( pWith->nCte>0 ){
    pView = sqlite3TreeViewPush(pView, 1);
    for(i=0; i<pWith->nCte; i++){
      StrAccum x;
      char zLine[1000];
      const struct Cte *pCte = &pWith->a[i];
      sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
      sqlite3_str_appendf(&x, "%s", pCte->zName);
      if( pCte->pCols && pCte->pCols->nExpr>0 ){
        char cSep = '(';
        int j;
        for(j=0; j<pCte->pCols->nExpr; j++){
          sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zName);
          cSep = ',';
        }
        sqlite3_str_appendf(&x, ")");
      }
      sqlite3_str_appendf(&x, " AS");
      sqlite3StrAccumFinish(&x);
      sqlite3TreeViewItem(pView, zLine, i<pWith->nCte-1);
      sqlite3TreeViewSelect(pView, pCte->pSelect, 0);
      sqlite3TreeViewPop(pView);
    }
    sqlite3TreeViewPop(pView);
  }
................................................................................
    sqlite3TreeViewWith(pView, p->pWith, 1);
    cnt = 1;
    sqlite3TreeViewPush(pView, 1);
  }
  do{
#if SELECTTRACE_ENABLED
    sqlite3TreeViewLine(pView,
      "SELECT%s%s (%s/%p) selFlags=0x%x nSelectRow=%d",
      ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
      ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""),
      p->zSelName, p, p->selFlags,
      (int)p->nSelectRow
    );
#else
    sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x nSelectRow=%d",
      ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),
      ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags,
      (int)p->nSelectRow
................................................................................
      pView = sqlite3TreeViewPush(pView, (n--)>0);
      sqlite3TreeViewLine(pView, "FROM");
      for(i=0; i<p->pSrc->nSrc; i++){
        struct SrcList_item *pItem = &p->pSrc->a[i];
        StrAccum x;
        char zLine[100];
        sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
        sqlite3_str_appendf(&x, "{%d,*}", pItem->iCursor);
        if( pItem->zDatabase ){
          sqlite3_str_appendf(&x, " %s.%s", pItem->zDatabase, pItem->zName);
        }else if( pItem->zName ){
          sqlite3_str_appendf(&x, " %s", pItem->zName);
        }
        if( pItem->pTab ){
          sqlite3_str_appendf(&x, " tabname=%Q", pItem->pTab->zName);
        }
        if( pItem->zAlias ){
          sqlite3_str_appendf(&x, " (AS %s)", pItem->zAlias);
        }
        if( pItem->fg.jointype & JT_LEFT ){
          sqlite3_str_appendf(&x, " LEFT-JOIN");
        }
        sqlite3StrAccumFinish(&x);
        sqlite3TreeViewItem(pView, zLine, i<p->pSrc->nSrc-1); 
        if( pItem->pSelect ){
          sqlite3TreeViewSelect(pView, pItem->pSelect, 0);
        }
        if( pItem->fg.isTabFunc ){
................................................................................
/*
 * The size of the buffer used by sqlite3_win32_write_debug().
 */
#ifndef SQLITE_WIN32_DBG_BUF_SIZE
#  define SQLITE_WIN32_DBG_BUF_SIZE   ((int)(4096-sizeof(DWORD)))
#endif

















/*
 * If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
 * various Win32 API heap functions instead of our own.
 */
#ifdef SQLITE_WIN32_MALLOC

/*
................................................................................
#ifndef SQLITE_OMIT_AUTOINIT
  if( sqlite3_initialize() ) return 0;
#endif
  return winUtf8ToMbcs(zText, useAnsi);
}

/*
** This function is the same as sqlite3_win32_set_directory (below); however,
** it accepts a UTF-8 string.
*/
SQLITE_API int sqlite3_win32_set_directory8(
  unsigned long type, /* Identifier for directory being set or reset */
  const char *zValue  /* New value for directory being set or reset */
){
  char **ppDirectory = 0;
#ifndef SQLITE_OMIT_AUTOINIT
  int rc = sqlite3_initialize();
  if( rc ) return rc;
#endif
  if( type==SQLITE_WIN32_DATA_DIRECTORY_TYPE ){
    ppDirectory = &sqlite3_data_directory;
................................................................................
    ppDirectory = &sqlite3_temp_directory;
  }
  assert( !ppDirectory || type==SQLITE_WIN32_DATA_DIRECTORY_TYPE
          || type==SQLITE_WIN32_TEMP_DIRECTORY_TYPE
  );
  assert( !ppDirectory || sqlite3MemdebugHasType(*ppDirectory, MEMTYPE_HEAP) );
  if( ppDirectory ){
    char *zCopy = 0;
    if( zValue && zValue[0] ){
      zCopy = sqlite3_mprintf("%s", zValue);
      if ( zCopy==0 ){
        return SQLITE_NOMEM_BKPT;
      }
    }
    sqlite3_free(*ppDirectory);
    *ppDirectory = zCopy;
    return SQLITE_OK;
  }
  return SQLITE_ERROR;
}

/*
** This function is the same as sqlite3_win32_set_directory (below); however,
** it accepts a UTF-16 string.
*/
SQLITE_API int sqlite3_win32_set_directory16(
  unsigned long type, /* Identifier for directory being set or reset */
  const void *zValue  /* New value for directory being set or reset */
){
  int rc;
  char *zUtf8 = 0;
  if( zValue ){
    zUtf8 = sqlite3_win32_unicode_to_utf8(zValue);
    if( zUtf8==0 ) return SQLITE_NOMEM_BKPT;
  }
  rc = sqlite3_win32_set_directory8(type, zUtf8);
  if( zUtf8 ) sqlite3_free(zUtf8);
  return rc;
}

/*
** This function sets the data directory or the temporary directory based on
** the provided arguments.  The type argument must be 1 in order to set the
** data directory or 2 in order to set the temporary directory.  The zValue
** argument is the name of the directory to use.  The return value will be
** SQLITE_OK if successful.
*/
SQLITE_API int sqlite3_win32_set_directory(
  unsigned long type, /* Identifier for directory being set or reset */
  void *zValue        /* New value for directory being set or reset */
){
  return sqlite3_win32_set_directory16(type, zValue);
}

/*
** The return value of winGetLastErrorMsg
** is zero if the error message fits in the buffer, or non-zero
** otherwise (if the message was truncated).
*/
static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
................................................................................
          pDb->safety_level | (db->flags & PAGER_FLAGS_MASK));
    }
  }
}
#else
# define setDefaultSyncFlag(pBt,safety_level)
#endif

/* Forward declaration */
static int newDatabase(BtShared*);


/*
** Get a reference to pPage1 of the database file.  This will
** also acquire a readlock on that file.
**
** SQLITE_OK is returned on success.  If the file is not a
** well-formed database file, then SQLITE_CORRUPT is returned.
................................................................................
  /* Do some checking to help insure the file we opened really is
  ** a valid database file. 
  */
  nPage = nPageHeader = get4byte(28+(u8*)pPage1->aData);
  sqlite3PagerPagecount(pBt->pPager, &nPageFile);
  if( nPage==0 || memcmp(24+(u8*)pPage1->aData, 92+(u8*)pPage1->aData,4)!=0 ){
    nPage = nPageFile;
  }
  if( (pBt->db->flags & SQLITE_ResetDatabase)!=0 ){
    nPage = 0;
  }
  if( nPage>0 ){
    u32 pageSize;
    u32 usableSize;
    u8 *page1 = pPage1->aData;
    rc = SQLITE_NOTADB;
    /* EVIDENCE-OF: R-43737-39999 Every valid SQLite database file begins
................................................................................
  u32 ovflPageSize;

  assert( sqlite3_mutex_held(pPage->pBt->mutex) );
  pPage->xParseCell(pPage, pCell, pInfo);
  if( pInfo->nLocal==pInfo->nPayload ){
    return SQLITE_OK;  /* No overflow pages. Return without doing anything */
  }
  testcase( pCell + pInfo->nSize == pPage->aDataEnd );
  testcase( pCell + (pInfo->nSize-1) == pPage->aDataEnd );
  if( pCell + pInfo->nSize > pPage->aDataEnd ){
    /* Cell extends past end of page */
    return SQLITE_CORRUPT_PAGE(pPage);
  }
  ovflPgno = get4byte(pCell + pInfo->nSize - 4);
  pBt = pPage->pBt;
  assert( pBt->usableSize > 4 );
  ovflPageSize = pBt->usableSize - 4;
................................................................................

  if( pFree ){
    sqlite3PageFree(pFree);
  }
  return rc;
}

/* Overwrite content from pX into pDest.  Only do the write if the
** content is different from what is already there.
*/
static int btreeOverwriteContent(
  MemPage *pPage,           /* MemPage on which writing will occur */
  u8 *pDest,                /* Pointer to the place to start writing */
  const BtreePayload *pX,   /* Source of data to write */
  int iOffset,              /* Offset of first byte to write */
  int iAmt                  /* Number of bytes to be written */
){
  int nData = pX->nData - iOffset;
  if( nData<=0 ){
    /* Overwritting with zeros */
    int i;
    for(i=0; i<iAmt && pDest[i]==0; i++){}
    if( i<iAmt ){
      int rc = sqlite3PagerWrite(pPage->pDbPage);
      if( rc ) return rc;
      memset(pDest + i, 0, iAmt - i);
    }
  }else{
    if( nData<iAmt ){
      /* Mixed read data and zeros at the end.  Make a recursive call
      ** to write the zeros then fall through to write the real data */
      int rc = btreeOverwriteContent(pPage, pDest+nData, pX, iOffset+nData,
                                 iAmt-nData);
      if( rc ) return rc;
      iAmt = nData;
    }
    if( memcmp(pDest, ((u8*)pX->pData) + iOffset, iAmt)!=0 ){
      int rc = sqlite3PagerWrite(pPage->pDbPage);
      if( rc ) return rc;
      memcpy(pDest, ((u8*)pX->pData) + iOffset, iAmt);
    }
  }
  return SQLITE_OK;
}

/*
** Overwrite the cell that cursor pCur is pointing to with fresh content
** contained in pX.
*/
static int btreeOverwriteCell(BtCursor *pCur, const BtreePayload *pX){
  int iOffset;                        /* Next byte of pX->pData to write */
  int nTotal = pX->nData + pX->nZero; /* Total bytes of to write */
  int rc;                             /* Return code */
  MemPage *pPage = pCur->pPage;       /* Page being written */
  BtShared *pBt;                      /* Btree */
  Pgno ovflPgno;                      /* Next overflow page to write */
  u32 ovflPageSize;                   /* Size to write on overflow page */

  if( pCur->info.pPayload + pCur->info.nLocal > pPage->aDataEnd ){
    return SQLITE_CORRUPT_BKPT;
  }
  /* Overwrite the local portion first */
  rc = btreeOverwriteContent(pPage, pCur->info.pPayload, pX,
                             0, pCur->info.nLocal);
  if( rc ) return rc;
  if( pCur->info.nLocal==nTotal ) return SQLITE_OK;

  /* Now overwrite the overflow pages */
  iOffset = pCur->info.nLocal;
  assert( nTotal>=0 );
  assert( iOffset>=0 );
  ovflPgno = get4byte(pCur->info.pPayload + iOffset);
  pBt = pPage->pBt;
  ovflPageSize = pBt->usableSize - 4;
  do{
    rc = btreeGetPage(pBt, ovflPgno, &pPage, 0);
    if( rc ) return rc;
    if( sqlite3PagerPageRefcount(pPage->pDbPage)!=1 ){
      rc = SQLITE_CORRUPT_BKPT;
    }else{
      if( iOffset+ovflPageSize<(u32)nTotal ){
        ovflPgno = get4byte(pPage->aData);
      }else{
        ovflPageSize = nTotal - iOffset;
      }
      rc = btreeOverwriteContent(pPage, pPage->aData+4, pX,
                                 iOffset, ovflPageSize);
    }
    sqlite3PagerUnref(pPage->pDbPage);
    if( rc ) return rc;
    iOffset += ovflPageSize;
  }while( iOffset<nTotal );
  return SQLITE_OK;    
}


/*
** Insert a new record into the BTree.  The content of the new record
** is described by the pX object.  The pCur cursor is used only to
** define what table the record should be inserted into, and is left
** pointing at a random location.
**
................................................................................
  if( pCur->pKeyInfo==0 ){
    assert( pX->pKey==0 );
    /* If this is an insert into a table b-tree, invalidate any incrblob 
    ** cursors open on the row being replaced */
    invalidateIncrblobCursors(p, pCur->pgnoRoot, pX->nKey, 0);

    /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing 
    ** to a row with the same key as the new entry being inserted.
    */
#ifdef SQLITE_DEBUG
    if( flags & BTREE_SAVEPOSITION ){
      assert( pCur->curFlags & BTCF_ValidNKey );
      assert( pX->nKey==pCur->info.nKey );
      assert( pCur->info.nSize!=0 );
      assert( loc==0 );
    }



#endif

    /* On the other hand, BTREE_SAVEPOSITION==0 does not imply
    ** that the cursor is not pointing to a row to be overwritten.
    ** So do a complete check.
    */
    if( (pCur->curFlags&BTCF_ValidNKey)!=0 && pX->nKey==pCur->info.nKey ){

      /* The cursor is pointing to the entry that is to be
      ** overwritten */
      assert( pX->nData>=0 && pX->nZero>=0 );
      if( pCur->info.nSize!=0
       && pCur->info.nPayload==(u32)pX->nData+pX->nZero
      ){
        /* New entry is the same size as the old.  Do an overwrite */
        return btreeOverwriteCell(pCur, pX);
      }
      assert( loc==0 );
    }else if( loc==0 ){
      /* The cursor is *not* pointing to the cell to be overwritten, nor
      ** to an adjacent cell.  Move the cursor so that it is pointing either
      ** to the cell to be overwritten or an adjacent cell.
      */
      rc = sqlite3BtreeMovetoUnpacked(pCur, 0, pX->nKey, flags!=0, &loc);
      if( rc ) return rc;
    }
  }else{
    /* This is an index or a WITHOUT ROWID table */

    /* If BTREE_SAVEPOSITION is set, the cursor must already be pointing 
    ** to a row with the same key as the new entry being inserted.
    */
    assert( (flags & BTREE_SAVEPOSITION)==0 || loc==0 );

    /* If the cursor is not already pointing either to the cell to be
    ** overwritten, or if a new cell is being inserted, if the cursor is
    ** not pointing to an immediately adjacent cell, then move the cursor
    ** so that it does.
    */
    if( loc==0 && (flags & BTREE_SAVEPOSITION)==0 ){
      if( pX->nMem ){
        UnpackedRecord r;
        r.pKeyInfo = pCur->pKeyInfo;
        r.aMem = pX->aMem;
        r.nField = pX->nMem;
        r.default_rc = 0;
        r.errCode = 0;
        r.r1 = 0;
        r.r2 = 0;
        r.eqSeen = 0;
        rc = sqlite3BtreeMovetoUnpacked(pCur, &r, 0, flags!=0, &loc);
      }else{
        rc = btreeMoveto(pCur, pX->pKey, pX->nKey, flags!=0, &loc);
      }
      if( rc ) return rc;
    }

    /* If the cursor is currently pointing to an entry to be overwritten
    ** and the new content is the same as as the old, then use the
    ** overwrite optimization.
    */
    if( loc==0 ){
      getCellInfo(pCur);
      if( pCur->info.nKey==pX->nKey ){
        BtreePayload x2;
        x2.pData = pX->pKey;
        x2.nData = pX->nKey;
        x2.nZero = 0;
        return btreeOverwriteCell(pCur, &x2);
      }
    }

  }
  assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) );

  pPage = pCur->pPage;
  assert( pPage->intKey || pX->nKey>=0 );
  assert( pPage->leaf || !pPage->intKey );

................................................................................
){
  va_list ap;
  if( !pCheck->mxErr ) return;
  pCheck->mxErr--;
  pCheck->nErr++;
  va_start(ap, zFormat);
  if( pCheck->errMsg.nChar ){
    sqlite3_str_append(&pCheck->errMsg, "\n", 1);
  }
  if( pCheck->zPfx ){
    sqlite3_str_appendf(&pCheck->errMsg, pCheck->zPfx, pCheck->v1, pCheck->v2);
  }
  sqlite3_str_vappendf(&pCheck->errMsg, zFormat, ap);
  va_end(ap);
  if( pCheck->errMsg.accError==SQLITE_NOMEM ){
    pCheck->mallocFailed = 1;
  }
}
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */

#ifndef SQLITE_OMIT_INTEGRITY_CHECK

................................................................................

  /* Clean  up and report errors.
  */
integrity_ck_cleanup:
  sqlite3PageFree(sCheck.heap);
  sqlite3_free(sCheck.aPgRef);
  if( sCheck.mallocFailed ){
    sqlite3_str_reset(&sCheck.errMsg);
    sCheck.nErr++;
  }
  *pnErr = sCheck.nErr;
  if( sCheck.nErr==0 ) sqlite3_str_reset(&sCheck.errMsg);
  /* Make sure this analysis did not leave any unref() pages. */
  assert( nRef==sqlite3PagerRefcount(pBt->pPager) );
  sqlite3BtreeLeave(p);
  return sqlite3StrAccumFinish(&sCheck.errMsg);
}
#endif /* SQLITE_OMIT_INTEGRITY_CHECK */

................................................................................
  int p4type          /* P4 operand type */
){
  char *p4copy = sqlite3DbMallocRawNN(sqlite3VdbeDb(p), 8);
  if( p4copy ) memcpy(p4copy, zP4, 8);
  return sqlite3VdbeAddOp4(p, op, p1, p2, p3, p4copy, p4type);
}

#ifndef SQLITE_OMIT_EXPLAIN
/*
** Return the address of the current EXPLAIN QUERY PLAN baseline.
** 0 means "none".
*/
SQLITE_PRIVATE int sqlite3VdbeExplainParent(Parse *pParse){
  VdbeOp *pOp;
  if( pParse->addrExplain==0 ) return 0;
  pOp = sqlite3VdbeGetOp(pParse->pVdbe, pParse->addrExplain);
  return pOp->p2;
}

/*
** Add a new OP_Explain opcode.
**
** If the bPush flag is true, then make this opcode the parent for
** subsequent Explains until sqlite3VdbeExplainPop() is called.
*/
SQLITE_PRIVATE void sqlite3VdbeExplain(Parse *pParse, u8 bPush, const char *zFmt, ...){
  if( pParse->explain==2 ){
    char *zMsg;
    Vdbe *v = pParse->pVdbe;
    va_list ap;
    int iThis;
    va_start(ap, zFmt);
    zMsg = sqlite3VMPrintf(pParse->db, zFmt, ap);
    va_end(ap);
    v = pParse->pVdbe;
    iThis = v->nOp;
    sqlite3VdbeAddOp4(v, OP_Explain, iThis, pParse->addrExplain, 0,
                      zMsg, P4_DYNAMIC);
    if( bPush) pParse->addrExplain = iThis;
  }
}

/*
** Pop the EXPLAIN QUERY PLAN stack one level.
*/
SQLITE_PRIVATE void sqlite3VdbeExplainPop(Parse *pParse){
  pParse->addrExplain = sqlite3VdbeExplainParent(pParse);
}
#endif /* SQLITE_OMIT_EXPLAIN */

/*
** Add an OP_ParseSchema opcode.  This routine is broken out from
** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees
** as having been used.
**
** The zWhere string must have been obtained from sqlite3_malloc().
** This routine will take ownership of the allocated memory.
................................................................................
** Translate the P4.pExpr value for an OP_CursorHint opcode into text
** that can be displayed in the P4 column of EXPLAIN output.
*/
static void displayP4Expr(StrAccum *p, Expr *pExpr){
  const char *zOp = 0;
  switch( pExpr->op ){
    case TK_STRING:
      sqlite3_str_appendf(p, "%Q", pExpr->u.zToken);
      break;
    case TK_INTEGER:
      sqlite3_str_appendf(p, "%d", pExpr->u.iValue);
      break;
    case TK_NULL:
      sqlite3_str_appendf(p, "NULL");
      break;
    case TK_REGISTER: {
      sqlite3_str_appendf(p, "r[%d]", pExpr->iTable);
      break;
    }
    case TK_COLUMN: {
      if( pExpr->iColumn<0 ){
        sqlite3_str_appendf(p, "rowid");
      }else{
        sqlite3_str_appendf(p, "c%d", (int)pExpr->iColumn);
      }
      break;
    }
    case TK_LT:      zOp = "LT";      break;
    case TK_LE:      zOp = "LE";      break;
    case TK_GT:      zOp = "GT";      break;
    case TK_GE:      zOp = "GE";      break;
................................................................................
    case TK_UPLUS:   zOp = "PLUS";    break;
    case TK_BITNOT:  zOp = "BITNOT";  break;
    case TK_NOT:     zOp = "NOT";     break;
    case TK_ISNULL:  zOp = "ISNULL";  break;
    case TK_NOTNULL: zOp = "NOTNULL"; break;

    default:
      sqlite3_str_appendf(p, "%s", "expr");
      break;
  }

  if( zOp ){
    sqlite3_str_appendf(p, "%s(", zOp);
    displayP4Expr(p, pExpr->pLeft);
    if( pExpr->pRight ){
      sqlite3_str_append(p, ",", 1);
      displayP4Expr(p, pExpr->pRight);
    }
    sqlite3_str_append(p, ")", 1);
  }
}
#endif /* VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS) */


#if VDBE_DISPLAY_P4
/*
................................................................................
  assert( nTemp>=20 );
  sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
  switch( pOp->p4type ){
    case P4_KEYINFO: {
      int j;
      KeyInfo *pKeyInfo = pOp->p4.pKeyInfo;
      assert( pKeyInfo->aSortOrder!=0 );
      sqlite3_str_appendf(&x, "k(%d", pKeyInfo->nKeyField);
      for(j=0; j<pKeyInfo->nKeyField; j++){
        CollSeq *pColl = pKeyInfo->aColl[j];
        const char *zColl = pColl ? pColl->zName : "";
        if( strcmp(zColl, "BINARY")==0 ) zColl = "B";
        sqlite3_str_appendf(&x, ",%s%s", 
               pKeyInfo->aSortOrder[j] ? "-" : "", zColl);
      }
      sqlite3_str_append(&x, ")", 1);
      break;
    }
#ifdef SQLITE_ENABLE_CURSOR_HINTS
    case P4_EXPR: {
      displayP4Expr(&x, pOp->p4.pExpr);
      break;
    }
#endif
    case P4_COLLSEQ: {
      CollSeq *pColl = pOp->p4.pColl;
      sqlite3_str_appendf(&x, "(%.20s)", pColl->zName);
      break;
    }
    case P4_FUNCDEF: {
      FuncDef *pDef = pOp->p4.pFunc;
      sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg);
      break;
    }
#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
    case P4_FUNCCTX: {
      FuncDef *pDef = pOp->p4.pCtx->pFunc;
      sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg);
      break;
    }
#endif
    case P4_INT64: {
      sqlite3_str_appendf(&x, "%lld", *pOp->p4.pI64);
      break;
    }
    case P4_INT32: {
      sqlite3_str_appendf(&x, "%d", pOp->p4.i);
      break;
    }
    case P4_REAL: {
      sqlite3_str_appendf(&x, "%.16g", *pOp->p4.pReal);
      break;
    }
    case P4_MEM: {
      Mem *pMem = pOp->p4.pMem;
      if( pMem->flags & MEM_Str ){
        zP4 = pMem->z;
      }else if( pMem->flags & MEM_Int ){
        sqlite3_str_appendf(&x, "%lld", pMem->u.i);
      }else if( pMem->flags & MEM_Real ){
        sqlite3_str_appendf(&x, "%.16g", pMem->u.r);
      }else if( pMem->flags & MEM_Null ){
        zP4 = "NULL";
      }else{
        assert( pMem->flags & MEM_Blob );
        zP4 = "(blob)";
      }
      break;
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    case P4_VTAB: {
      sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;
      sqlite3_str_appendf(&x, "vtab:%p", pVtab);
      break;
    }
#endif
    case P4_INTARRAY: {
      int i;
      int *ai = pOp->p4.ai;
      int n = ai[0];   /* The first element of an INTARRAY is always the
                       ** count of the number of elements to follow */
      for(i=1; i<=n; i++){
        sqlite3_str_appendf(&x, ",%d", ai[i]);
      }
      zTemp[0] = '[';
      sqlite3_str_append(&x, "]", 1);
      break;
    }
    case P4_SUBPROGRAM: {
      sqlite3_str_appendf(&x, "program");
      break;
    }
    case P4_DYNBLOB:
    case P4_ADVANCE: {
      zTemp[0] = 0;
      break;
    }
    case P4_TABLE: {
      sqlite3_str_appendf(&x, "%s", pOp->p4.pTab->zName);
      break;
    }
    default: {
      zP4 = pOp->p4.z;
      if( zP4==0 ){
        zP4 = zTemp;
        zTemp[0] = 0;
................................................................................
  db = p->db;
  sqlite3StrAccumInit(&out, 0, zBase, sizeof(zBase), 
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  if( db->nVdbeExec>1 ){
    while( *zRawSql ){
      const char *zStart = zRawSql;
      while( *(zRawSql++)!='\n' && *zRawSql );
      sqlite3_str_append(&out, "-- ", 3);
      assert( (zRawSql - zStart) > 0 );
      sqlite3_str_append(&out, zStart, (int)(zRawSql-zStart));
    }
  }else if( p->nVar==0 ){
    sqlite3_str_append(&out, zRawSql, sqlite3Strlen30(zRawSql));
  }else{
    while( zRawSql[0] ){
      n = findNextHostParameter(zRawSql, &nToken);
      assert( n>0 );
      sqlite3_str_append(&out, zRawSql, n);
      zRawSql += n;
      assert( zRawSql[0] || nToken==0 );
      if( nToken==0 ) break;
      if( zRawSql[0]=='?' ){
        if( nToken>1 ){
          assert( sqlite3Isdigit(zRawSql[1]) );
          sqlite3GetInt32(&zRawSql[1], &idx);
................................................................................
        assert( idx>0 );
      }
      zRawSql += nToken;
      nextIndex = idx + 1;
      assert( idx>0 && idx<=p->nVar );
      pVar = &p->aVar[idx-1];
      if( pVar->flags & MEM_Null ){
        sqlite3_str_append(&out, "NULL", 4);
      }else if( pVar->flags & MEM_Int ){
        sqlite3_str_appendf(&out, "%lld", pVar->u.i);
      }else if( pVar->flags & MEM_Real ){
        sqlite3_str_appendf(&out, "%!.15g", pVar->u.r);
      }else if( pVar->flags & MEM_Str ){
        int nOut;  /* Number of bytes of the string text to include in output */
#ifndef SQLITE_OMIT_UTF16
        u8 enc = ENC(db);
        if( enc!=SQLITE_UTF8 ){
          memset(&utf8, 0, sizeof(utf8));
          utf8.db = db;
          sqlite3VdbeMemSetStr(&utf8, pVar->z, pVar->n, enc, SQLITE_STATIC);
          if( SQLITE_NOMEM==sqlite3VdbeChangeEncoding(&utf8, SQLITE_UTF8) ){
            out.accError = SQLITE_NOMEM;
            out.nAlloc = 0;
          }
          pVar = &utf8;
        }
#endif
        nOut = pVar->n;
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut>SQLITE_TRACE_SIZE_LIMIT ){
          nOut = SQLITE_TRACE_SIZE_LIMIT;
          while( nOut<pVar->n && (pVar->z[nOut]&0xc0)==0x80 ){ nOut++; }
        }
#endif    
        sqlite3_str_appendf(&out, "'%.*q'", nOut, pVar->z);
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut<pVar->n ){
          sqlite3_str_appendf(&out, "/*+%d bytes*/", pVar->n-nOut);
        }
#endif
#ifndef SQLITE_OMIT_UTF16
        if( enc!=SQLITE_UTF8 ) sqlite3VdbeMemRelease(&utf8);
#endif
      }else if( pVar->flags & MEM_Zero ){
        sqlite3_str_appendf(&out, "zeroblob(%d)", pVar->u.nZero);
      }else{
        int nOut;  /* Number of bytes of the blob to include in output */
        assert( pVar->flags & MEM_Blob );
        sqlite3_str_append(&out, "x'", 2);
        nOut = pVar->n;
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut>SQLITE_TRACE_SIZE_LIMIT ) nOut = SQLITE_TRACE_SIZE_LIMIT;
#endif
        for(i=0; i<nOut; i++){
          sqlite3_str_appendf(&out, "%02x", pVar->z[i]&0xff);
        }
        sqlite3_str_append(&out, "'", 1);
#ifdef SQLITE_TRACE_SIZE_LIMIT
        if( nOut<pVar->n ){
          sqlite3_str_appendf(&out, "/*+%d bytes*/", pVar->n-nOut);
        }
#endif
      }
    }
  }
  if( out.accError ) sqlite3_str_reset(&out);
  return sqlite3StrAccumFinish(&out);
}

#endif /* #ifndef SQLITE_OMIT_TRACE */

/************** End of vdbetrace.c *******************************************/
/************** Begin file vdbe.c ********************************************/
................................................................................
            if( aiMap ) aiMap[i] = j;
          }
  
          assert( i==nExpr || colUsed!=(MASKBIT(nExpr)-1) );
          if( colUsed==(MASKBIT(nExpr)-1) ){
            /* If we reach this point, that means the index pIdx is usable */
            int iAddr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
            ExplainQueryPlan((pParse, 0,

                              "USING INDEX %s FOR IN-OPERATOR",pIdx->zName));


            sqlite3VdbeAddOp3(v, OP_OpenRead, iTab, pIdx->tnum, iDb);
            sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
            VdbeComment((v, "%s", pIdx->zName));
            assert( IN_INDEX_INDEX_DESC == IN_INDEX_INDEX_ASC+1 );
            eType = IN_INDEX_INDEX_ASC + pIdx->aSortOrder[0];
  
            if( prRhsHasNull ){
................................................................................
        **
        ** Generate code to write the results of the select into the temporary
        ** table allocated and opened above.
        */
        Select *pSelect = pExpr->x.pSelect;
        ExprList *pEList = pSelect->pEList;

        ExplainQueryPlan((pParse, 1, "%sLIST SUBQUERY",


            jmpIfDynamic>=0?"":"CORRELATED "

        ));





        assert( !isRowid );
        /* If the LHS and RHS of the IN operator do not match, that
        ** error will have been caught long before we reach this point. */
        if( ALWAYS(pEList->nExpr==nVal) ){
          SelectDest dest;
          int i;
          sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable);
................................................................................
      Expr *pLimit;                         /* New limit expression */

      testcase( pExpr->op==TK_EXISTS );
      testcase( pExpr->op==TK_SELECT );
      assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT );
      assert( ExprHasProperty(pExpr, EP_xIsSelect) );

      pSel = pExpr->x.pSelect;
      ExplainQueryPlan((pParse, 1, "%sSCALAR SUBQUERY",

            jmpIfDynamic>=0?"":"CORRELATED "));








      nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1;
      sqlite3SelectDestInit(&dest, 0, pParse->nMem+1);
      pParse->nMem += nReg;
      if( pExpr->op==TK_SELECT ){
        dest.eDest = SRT_Mem;
        dest.iSdst = dest.iSDParm;
        dest.nSdst = nReg;
................................................................................

  assert( target>0 && target<=pParse->nMem );
  if( v==0 ){
    assert( pParse->db->mallocFailed );
    return 0;
  }

expr_code_doover:
  if( pExpr==0 ){
    op = TK_NULL;
  }else{
    op = pExpr->op;
  }
  switch( op ){
    case TK_AGG_COLUMN: {
................................................................................
    case TK_BETWEEN: {
      exprCodeBetween(pParse, pExpr, target, 0, 0);
      return target;
    }
    case TK_SPAN:
    case TK_COLLATE: 
    case TK_UPLUS: {
      pExpr = pExpr->pLeft;
      goto expr_code_doover;
    }

    case TK_TRIGGER: {
      /* If the opcode is TK_TRIGGER, then the expression is a reference
      ** to a column in the new.* or old.* pseudo-tables available to
      ** trigger programs. In this case Expr.iTable is set to 1 for the
      ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn
................................................................................
  assert( pTab!=0 );
  assert( pParse->nErr==0 );
  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 
       && db->init.busy==0
#if SQLITE_USER_AUTHENTICATION
       && sqlite3UserAuthTable(pTab->zName)==0
#endif
#ifdef SQLITE_ALLOW_SQLITE_MASTER_INDEX
       && sqlite3StrICmp(&pTab->zName[7],"master")!=0
#endif
       && sqlite3StrNICmp(&pTab->zName[7],"altertab_",9)!=0
 ){
    sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName);
    goto exit_create_index;
  }
#ifndef SQLITE_OMIT_VIEW
  if( pTab->pSelect ){
    sqlite3ErrorMsg(pParse, "views may not be indexed");
    goto exit_create_index;
................................................................................
  char *zErr;
  int j;
  StrAccum errMsg;
  Table *pTab = pIdx->pTable;

  sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, 200);
  if( pIdx->aColExpr ){
    sqlite3_str_appendf(&errMsg, "index '%q'", pIdx->zName);
  }else{
    for(j=0; j<pIdx->nKeyCol; j++){
      char *zCol;
      assert( pIdx->aiColumn[j]>=0 );
      zCol = pTab->aCol[pIdx->aiColumn[j]].zName;
      if( j ) sqlite3_str_append(&errMsg, ", ", 2);
      sqlite3_str_appendall(&errMsg, pTab->zName);
      sqlite3_str_append(&errMsg, ".", 1);
      sqlite3_str_appendall(&errMsg, zCol);
    }
  }
  zErr = sqlite3StrAccumFinish(&errMsg);
  sqlite3HaltConstraint(pParse, 
    IsPrimaryKeyIndex(pIdx) ? SQLITE_CONSTRAINT_PRIMARYKEY 
                            : SQLITE_CONSTRAINT_UNIQUE,
    onError, zErr, P4_DYNAMIC, P5_ConstraintUnique);
................................................................................

  if( argc>=1 && (zFormat = (const char*)sqlite3_value_text(argv[0]))!=0 ){
    x.nArg = argc-1;
    x.nUsed = 0;
    x.apArg = argv+1;
    sqlite3StrAccumInit(&str, db, 0, 0, db->aLimit[SQLITE_LIMIT_LENGTH]);
    str.printfFlags = SQLITE_PRINTF_SQLFUNC;
    sqlite3_str_appendf(&str, zFormat, &x);
    n = str.nChar;
    sqlite3_result_text(context, sqlite3StrAccumFinish(&str), n,
                        SQLITE_DYNAMIC);
  }
}

/*
................................................................................
      if( argc==2 ){
        zSep = (char*)sqlite3_value_text(argv[1]);
        nSep = sqlite3_value_bytes(argv[1]);
      }else{
        zSep = ",";
        nSep = 1;
      }
      if( zSep ) sqlite3_str_append(pAccum, zSep, nSep);
    }
    zVal = (char*)sqlite3_value_text(argv[0]);
    nVal = sqlite3_value_bytes(argv[0]);
    if( zVal ) sqlite3_str_append(pAccum, zVal, nVal);
  }
}
static void groupConcatFinalize(sqlite3_context *context){
  StrAccum *pAccum;
  pAccum = sqlite3_aggregate_context(context, 0);
  if( pAccum ){
    if( pAccum->accError==SQLITE_TOOBIG ){
      sqlite3_result_error_toobig(context);
    }else if( pAccum->accError==SQLITE_NOMEM ){
      sqlite3_result_error_nomem(context);
    }else{    
      sqlite3_result_text(context, sqlite3StrAccumFinish(pAccum), -1, 
                          sqlite3_free);
    }
  }
}
................................................................................
                      sqlite3_stmt**,const void**);
  int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
  void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
  void *(*value_pointer)(sqlite3_value*,const char*);
  int (*vtab_nochange)(sqlite3_context*);
  int (*value_nochange)(sqlite3_value*);
  const char *(*vtab_collation)(sqlite3_index_info*,int);
  /* Version 3.24.0 and later */
  int (*keyword_count)(void);
  int (*keyword_name)(int,const char**,int*);
  int (*keyword_check)(const char*,int);
  sqlite3_str *(*str_new)(sqlite3*);
  char *(*str_finish)(sqlite3_str*);
  void (*str_appendf)(sqlite3_str*, const char *zFormat, ...);
  void (*str_vappendf)(sqlite3_str*, const char *zFormat, va_list);
  void (*str_append)(sqlite3_str*, const char *zIn, int N);
  void (*str_appendall)(sqlite3_str*, const char *zIn);
  void (*str_appendchar)(sqlite3_str*, int N, char C);
  void (*str_reset)(sqlite3_str*);
  int (*str_errcode)(sqlite3_str*);
  int (*str_length)(sqlite3_str*);
  char *(*str_value)(sqlite3_str*);
};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_bind_pointer           sqlite3_api->bind_pointer
#define sqlite3_result_pointer         sqlite3_api->result_pointer
#define sqlite3_value_pointer          sqlite3_api->value_pointer
/* Version 3.22.0 and later */
#define sqlite3_vtab_nochange          sqlite3_api->vtab_nochange
#define sqlite3_value_nochange         sqlite3_api->value_nochange
#define sqlite3_vtab_collation         sqlite3_api->vtab_collation
/* Version 3.24.0 and later */
#define sqlite3_keyword_count          sqlite3_api->keyword_count
#define sqlite3_keyword_name           sqlite3_api->keyword_name
#define sqlite3_keyword_check          sqlite3_api->keyword_check
#define sqlite3_str_new                sqlite3_api->str_new
#define sqlite3_str_finish             sqlite3_api->str_finish
#define sqlite3_str_appendf            sqlite3_api->str_appendf
#define sqlite3_str_vappendf           sqlite3_api->str_vappendf
#define sqlite3_str_append             sqlite3_api->str_append
#define sqlite3_str_appendall          sqlite3_api->str_appendall
#define sqlite3_str_appendchar         sqlite3_api->str_appendchar
#define sqlite3_str_reset              sqlite3_api->str_reset
#define sqlite3_str_errcode            sqlite3_api->str_errcode
#define sqlite3_str_length             sqlite3_api->str_length
#define sqlite3_str_value              sqlite3_api->str_value
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
  /* This case when the file really is being compiled as a loadable 
  ** extension */
# define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;
................................................................................
  sqlite3_prepare16_v3,
  sqlite3_bind_pointer,
  sqlite3_result_pointer,
  sqlite3_value_pointer,
  /* Version 3.22.0 and later */
  sqlite3_vtab_nochange,
  sqlite3_value_nochange,
  sqlite3_vtab_collation,
  /* Version 3.24.0 and later */
  sqlite3_keyword_count,
  sqlite3_keyword_name,
  sqlite3_keyword_check,
  sqlite3_str_new,
  sqlite3_str_finish,
  sqlite3_str_appendf,
  sqlite3_str_vappendf,
  sqlite3_str_append,
  sqlite3_str_appendall,
  sqlite3_str_appendchar,
  sqlite3_str_reset,
  sqlite3_str_errcode,
  sqlite3_str_length,
  sqlite3_str_value
};

/*
** Attempt to load an SQLite extension library contained in the file
** zFile.  The entry point is zProc.  zProc may be 0 in which case a
** default entry point name (sqlite3_extension_init) is used.  Use
** of the default name is recommended.
................................................................................

  zEntry = zProc ? zProc : "sqlite3_extension_init";

  handle = sqlite3OsDlOpen(pVfs, zFile);
#if SQLITE_OS_UNIX || SQLITE_OS_WIN
  for(ii=0; ii<ArraySize(azEndings) && handle==0; ii++){
    char *zAltFile = sqlite3_mprintf("%s.%s", zFile, azEndings[ii]);

    if( zAltFile==0 ) return SQLITE_NOMEM_BKPT;

    handle = sqlite3OsDlOpen(pVfs, zAltFile);
    sqlite3_free(zAltFile);
  }
#endif
  if( handle==0 ){
    if( pzErrMsg ){
      *pzErrMsg = zErrmsg = sqlite3_malloc64(nMsg);
      if( zErrmsg ){
................................................................................
  char cSep = '(';
  StrAccum acc;
  char zBuf[200];

  UNUSED_PARAMETER(argc);
  UNUSED_PARAMETER(argv);
  sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
  sqlite3_str_appendall(&acc, "CREATE TABLE x");
  for(i=0, j=pPragma->iPragCName; i<pPragma->nPragCName; i++, j++){
    sqlite3_str_appendf(&acc, "%c\"%s\"", cSep, pragCName[j]);
    cSep = ',';
  }
  if( i==0 ){
    sqlite3_str_appendf(&acc, "(\"%s\"", pPragma->zName);
    cSep = ',';
    i++;
  }
  j = 0;
  if( pPragma->mPragFlg & PragFlg_Result1 ){
    sqlite3_str_appendall(&acc, ",arg HIDDEN");
    j++;
  }
  if( pPragma->mPragFlg & (PragFlg_SchemaOpt|PragFlg_SchemaReq) ){
    sqlite3_str_appendall(&acc, ",schema HIDDEN");
    j++;
  }
  sqlite3_str_append(&acc, ")", 1);
  sqlite3StrAccumFinish(&acc);
  assert( strlen(zBuf) < sizeof(zBuf)-1 );
  rc = sqlite3_declare_vtab(db, zBuf);
  if( rc==SQLITE_OK ){
    pTab = (PragmaVtab*)sqlite3_malloc(sizeof(PragmaVtab));
    if( pTab==0 ){
      rc = SQLITE_NOMEM;
................................................................................
      pCsr->azArg[j] = sqlite3_mprintf("%s", zText);
      if( pCsr->azArg[j]==0 ){
        return SQLITE_NOMEM;
      }
    }
  }
  sqlite3StrAccumInit(&acc, 0, 0, 0, pTab->db->aLimit[SQLITE_LIMIT_SQL_LENGTH]);
  sqlite3_str_appendall(&acc, "PRAGMA ");
  if( pCsr->azArg[1] ){
    sqlite3_str_appendf(&acc, "%Q.", pCsr->azArg[1]);
  }
  sqlite3_str_appendall(&acc, pTab->pName->zName);
  if( pCsr->azArg[0] ){
    sqlite3_str_appendf(&acc, "=%Q", pCsr->azArg[0]);
  }
  zSql = sqlite3StrAccumFinish(&acc);
  if( zSql==0 ) return SQLITE_NOMEM;
  rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pPragma, 0);
  sqlite3_free(zSql);
  if( rc!=SQLITE_OK ){
    pTab->base.zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pTab->db));
................................................................................
  **    meta[9]   unused
  **
  ** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to
  ** the possible values of meta[4].
  */
  for(i=0; i<ArraySize(meta); i++){
    sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]);
  }
  if( (db->flags & SQLITE_ResetDatabase)!=0 ){
    memset(meta, 0, sizeof(meta));
  }
  pDb->pSchema->schema_cookie = meta[BTREE_SCHEMA_VERSION-1];

  /* If opening a non-empty database, check the text encoding. For the
  ** main database, set sqlite3.enc to the encoding of the main database.
  ** For an attached db, it is an error if the encoding is not the same
  ** as sqlite3.enc.
................................................................................
  }
  rc = sParse.rc;

#ifndef SQLITE_OMIT_EXPLAIN
  if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){
    static const char * const azColName[] = {
       "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment",
       "id", "parent", "notused", "detail"
    };
    int iFirst, mx;
    if( sParse.explain==2 ){
      sqlite3VdbeSetNumCols(sParse.pVdbe, 4);
      iFirst = 8;
      mx = 12;
    }else{
................................................................................
/*
** Trace output macros
*/
#if SELECTTRACE_ENABLED
/***/ int sqlite3SelectTrace = 0;
# define SELECTTRACE(K,P,S,X)  \
  if(sqlite3SelectTrace&(K))   \
    sqlite3DebugPrintf("%s/%d/%p: ",(S)->zSelName,(P)->addrExplain,(S)),\
    sqlite3DebugPrintf X
#else
# define SELECTTRACE(K,P,S,X)
#endif


/*
................................................................................
  u8 nDefer;            /* Number of valid entries in aDefer[] */
  struct DeferredCsr {
    Table *pTab;        /* Table definition */
    int iCsr;           /* Cursor number for table */
    int nKey;           /* Number of PK columns for table pTab (>=1) */
  } aDefer[4];
#endif
  struct RowLoadInfo *pDeferredRowLoad;  /* Deferred row loading info or NULL */
};
#define SORTFLAG_UseSorter  0x01   /* Use SorterOpen instead of OpenEphemeral */

/*
** Delete all the content of a Select structure.  Deallocate the structure
** itself only if bFree is true.
*/
................................................................................
/* Forward reference */
static KeyInfo *keyInfoFromExprList(
  Parse *pParse,       /* Parsing context */
  ExprList *pList,     /* Form the KeyInfo object from this ExprList */
  int iStart,          /* Begin with this column of pList */
  int nExtra           /* Add this many extra columns to the end */
);

/*
** An instance of this object holds information (beyond pParse and pSelect)
** needed to load the next result row that is to be added to the sorter.
*/
typedef struct RowLoadInfo RowLoadInfo;
struct RowLoadInfo {
  int regResult;               /* Store results in array of registers here */
  u8 ecelFlags;                /* Flag argument to ExprCodeExprList() */
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
  ExprList *pExtra;            /* Extra columns needed by sorter refs */
  int regExtraResult;          /* Where to load the extra columns */
#endif
};

/*
** This routine does the work of loading query data into an array of
** registers so that it can be added to the sorter.
*/
static void innerLoopLoadRow(
  Parse *pParse,             /* Statement under construction */
  Select *pSelect,           /* The query being coded */
  RowLoadInfo *pInfo         /* Info needed to complete the row load */
){
  sqlite3ExprCodeExprList(pParse, pSelect->pEList, pInfo->regResult,
                          0, pInfo->ecelFlags);
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
  if( pInfo->pExtra ){
    sqlite3ExprCodeExprList(pParse, pInfo->pExtra, pInfo->regExtraResult, 0, 0);
    sqlite3ExprListDelete(pParse->db, pInfo->pExtra);
  }
#endif
}

/*
** Code the OP_MakeRecord instruction that generates the entry to be
** added into the sorter.
**
** Return the register in which the result is stored.
*/
static int makeSorterRecord(
  Parse *pParse,
  SortCtx *pSort,
  Select *pSelect,
  int regBase,
  int nBase
){
  int nOBSat = pSort->nOBSat;
  Vdbe *v = pParse->pVdbe;
  int regOut = ++pParse->nMem;
  if( pSort->pDeferredRowLoad ){
    innerLoopLoadRow(pParse, pSelect, pSort->pDeferredRowLoad);
  }
  sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase+nOBSat, nBase-nOBSat, regOut);
  return regOut;
}

/*
** Generate code that will push the record in registers regData
** through regData+nData-1 onto the sorter.
*/
static void pushOntoSorter(
  Parse *pParse,         /* Parser context */
  SortCtx *pSort,        /* Information about the ORDER BY clause */
  Select *pSelect,       /* The whole SELECT statement */
  int regData,           /* First register holding data to be sorted */
  int regOrigData,       /* First register holding data before packing */
  int nData,             /* Number of elements in the regData data array */
  int nPrefixReg         /* No. of reg prior to regData available for use */
){
  Vdbe *v = pParse->pVdbe;                         /* Stmt under construction */
  int bSeq = ((pSort->sortFlags & SORTFLAG_UseSorter)==0);
  int nExpr = pSort->pOrderBy->nExpr;              /* No. of ORDER BY terms */
  int nBase = nExpr + bSeq + nData;                /* Fields in sorter record */
  int regBase;                                     /* Regs for sorter record */
  int regRecord = 0;                               /* Assembled sorter record */
  int nOBSat = pSort->nOBSat;                      /* ORDER BY terms to skip */
  int op;                            /* Opcode to add sorter record to sorter */
  int iLimit;                        /* LIMIT counter */
  int iSkip = 0;                     /* End of the sorter insert loop */

  assert( bSeq==0 || bSeq==1 );

  /* Three cases:
  **   (1) The data to be sorted has already been packed into a Record
  **       by a prior OP_MakeRecord.  In this case nData==1 and regData
  **       will be completely unrelated to regOrigData.
  **   (2) All output columns are included in the sort record.  In that
  **       case regData==regOrigData.
  **   (3) Some output columns are omitted from the sort record due to
  **       the SQLITE_ENABLE_SORTER_REFERENCE optimization, or due to the
  **       SQLITE_ECEL_OMITREF optimization, or due to the 
  **       SortCtx.pDeferredRowLoad optimiation.  In any of these cases
  **       regOrigData is 0 to prevent this routine from trying to copy
  **       values that might not yet exist.
  */
  assert( nData==1 || regData==regOrigData || regOrigData==0 );

  if( nPrefixReg ){
    assert( nPrefixReg==nExpr+bSeq );
    regBase = regData - nPrefixReg;
  }else{
    regBase = pParse->nMem + 1;
    pParse->nMem += nBase;
  }
  assert( pSelect->iOffset==0 || pSelect->iLimit!=0 );
  iLimit = pSelect->iOffset ? pSelect->iOffset+1 : pSelect->iLimit;
  pSort->labelDone = sqlite3VdbeMakeLabel(v);
................................................................................
    int regPrevKey;   /* The first nOBSat columns of the previous row */
    int addrFirst;    /* Address of the OP_IfNot opcode */
    int addrJmp;      /* Address of the OP_Jump opcode */
    VdbeOp *pOp;      /* Opcode that opens the sorter */
    int nKey;         /* Number of sorting key columns, including OP_Sequence */
    KeyInfo *pKI;     /* Original KeyInfo on the sorter table */

    regRecord = makeSorterRecord(pParse, pSort, pSelect, regBase, nBase);
    regPrevKey = pParse->nMem+1;
    pParse->nMem += pSort->nOBSat;
    nKey = nExpr - pSort->nOBSat + bSeq;
    if( bSeq ){
      addrFirst = sqlite3VdbeAddOp1(v, OP_IfNot, regBase+nExpr); 
    }else{
      addrFirst = sqlite3VdbeAddOp1(v, OP_SequenceTest, pSort->iECursor);
................................................................................
    ** If the new record does not need to be inserted into the sorter,
    ** jump to the next iteration of the loop. Or, if the
    ** pSort->bOrderedInnerLoop flag is set to indicate that the inner
    ** loop delivers items in sorted order, jump to the next iteration
    ** of the outer loop.
    */
    int iCsr = pSort->iECursor;


    sqlite3VdbeAddOp2(v, OP_IfNotZero, iLimit, sqlite3VdbeCurrentAddr(v)+4);
    VdbeCoverage(v);
    sqlite3VdbeAddOp2(v, OP_Last, iCsr, 0);
    iSkip = sqlite3VdbeAddOp4Int(v, OP_IdxLE,
                                 iCsr, 0, regBase+nOBSat, nExpr-nOBSat);
    VdbeCoverage(v);
    sqlite3VdbeAddOp1(v, OP_Delete, iCsr);
  }
  if( regRecord==0 ){
    regRecord = makeSorterRecord(pParse, pSort, pSelect, regBase, nBase);
  }
  if( pSort->sortFlags & SORTFLAG_UseSorter ){
    op = OP_SorterInsert;
  }else{
    op = OP_IdxInsert;
  }
  sqlite3VdbeAddOp4Int(v, op, pSort->iECursor, regRecord,
                       regBase+nOBSat, nBase-nOBSat);
  if( iSkip ){
    assert( pSort->bOrderedInnerLoop==0 || pSort->bOrderedInnerLoop==1 );
    sqlite3VdbeChangeP2(v, iSkip,
         sqlite3VdbeCurrentAddr(v) + pSort->bOrderedInnerLoop);
  }
}

/*
** Add code to implement the OFFSET
*/
static void codeOffset(
  Vdbe *v,          /* Generate code into this VM */
................................................................................
  for(i=0; i<pEList->nExpr; i++){
    struct ExprList_item *pItem = &pEList->a[i];
    if( pItem->u.x.iOrderByCol==0 ){
      Expr *pExpr = pItem->pExpr;
      Table *pTab = pExpr->pTab;
      if( pExpr->op==TK_COLUMN && pTab && !IsVirtual(pTab)
       && (pTab->aCol[pExpr->iColumn].colFlags & COLFLAG_SORTERREF)



      ){
        int j;
        for(j=0; j<nDefer; j++){
          if( pSort->aDefer[j].iCsr==pExpr->iTable ) break;
        }
        if( j==nDefer ){
          if( nDefer==ArraySize(pSort->aDefer) ){
................................................................................
  Vdbe *v = pParse->pVdbe;
  int i;
  int hasDistinct;            /* True if the DISTINCT keyword is present */
  int eDest = pDest->eDest;   /* How to dispose of results */
  int iParm = pDest->iSDParm; /* First argument to disposal method */
  int nResultCol;             /* Number of result columns */
  int nPrefixReg = 0;         /* Number of extra registers before regResult */
  RowLoadInfo sRowLoadInfo;   /* Info for deferred row loading */

  /* Usually, regResult is the first cell in an array of memory cells
  ** containing the current result row. In this case regOrig is set to the
  ** same value. However, if the results are being sent to the sorter, the
  ** values for any expressions that are also part of the sort-key are omitted
  ** from this array. In this case regOrig is set to zero.  */
  int regResult;              /* Start of memory holding current results */
................................................................................
  }else if( eDest!=SRT_Exists ){
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
    ExprList *pExtra = 0;
#endif
    /* If the destination is an EXISTS(...) expression, the actual
    ** values returned by the SELECT are not required.
    */
    u8 ecelFlags;    /* "ecel" is an abbreviation of "ExprCodeExprList" */
    ExprList *pEList;
    if( eDest==SRT_Mem || eDest==SRT_Output || eDest==SRT_Coroutine ){
      ecelFlags = SQLITE_ECEL_DUP;
    }else{
      ecelFlags = 0;
    }
    if( pSort && hasDistinct==0 && eDest!=SRT_EphemTab && eDest!=SRT_Table ){
      /* For each expression in p->pEList that is a copy of an expression in
      ** the ORDER BY clause (pSort->pOrderBy), set the associated 
      ** iOrderByCol value to one more than the index of the ORDER BY 
      ** expression within the sort-key that pushOntoSorter() will generate.
      ** This allows the p->pEList field to be omitted from the sorted record,
      ** saving space and CPU cycles.  */
      ecelFlags |= (SQLITE_ECEL_OMITREF|SQLITE_ECEL_REF);

      for(i=pSort->nOBSat; i<pSort->pOrderBy->nExpr; i++){
        int j;
        if( (j = pSort->pOrderBy->a[i].u.x.iOrderByCol)>0 ){
          p->pEList->a[j-1].u.x.iOrderByCol = i+1-pSort->nOBSat;
        }
      }
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
................................................................................
        ** composite primary keys in the SortCtx.aDefer[] array.  */
        VdbeOp *pOp = sqlite3VdbeGetOp(v, pSort->addrSortIndex);
        pOp->p2 += (pExtra->nExpr - pSort->nDefer);
        pOp->p4.pKeyInfo->nAllField += (pExtra->nExpr - pSort->nDefer);
        pParse->nMem += pExtra->nExpr;
      }
#endif

      /* Adjust nResultCol to account for columns that are omitted
      ** from the sorter by the optimizations in this branch */
      pEList = p->pEList;
      for(i=0; i<pEList->nExpr; i++){
        if( pEList->a[i].u.x.iOrderByCol>0
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
         || pEList->a[i].bSorterRef
#endif
        ){
          nResultCol--;
          regOrig = 0;
        }
      }

      testcase( regOrig );
      testcase( eDest==SRT_Set );
      testcase( eDest==SRT_Mem );
      testcase( eDest==SRT_Coroutine );
      testcase( eDest==SRT_Output );
      assert( eDest==SRT_Set || eDest==SRT_Mem 
           || eDest==SRT_Coroutine || eDest==SRT_Output );
    }

    sRowLoadInfo.regResult = regResult;
    sRowLoadInfo.ecelFlags = ecelFlags;
#ifdef SQLITE_ENABLE_SORTER_REFERENCES
    sRowLoadInfo.pExtra = pExtra;
    sRowLoadInfo.regExtraResult = regResult + nResultCol;
    if( pExtra ) nResultCol += pExtra->nExpr;


#endif
    if( p->iLimit
     && (ecelFlags & SQLITE_ECEL_OMITREF)!=0 
     && nPrefixReg>0
    ){

      assert( pSort!=0 );
      assert( hasDistinct==0 );
      pSort->pDeferredRowLoad = &sRowLoadInfo;
      regOrig = 0;
    }else{
      innerLoopLoadRow(pParse, p, &sRowLoadInfo);
    }

  }

  /* If the DISTINCT keyword was present on the SELECT statement
  ** and this row has been seen before, then do not make this row
  ** part of the result.
  */
  if( hasDistinct ){
................................................................................
        sqlite3VdbeAddOp4Int(v, OP_Found, iParm+1, addr, r1, 0);
        VdbeCoverage(v);
        sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm+1, r1,regResult,nResultCol);
        assert( pSort==0 );
      }
#endif
      if( pSort ){
        assert( regResult==regOrig );
        pushOntoSorter(pParse, pSort, p, r1+nPrefixReg, regOrig, 1, nPrefixReg);
      }else{
        int r2 = sqlite3GetTempReg(pParse);
        sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, r2);
        sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, r2);
        sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
        sqlite3ReleaseTempReg(pParse, r2);
      }
................................................................................
**
**   "USE TEMP B-TREE FOR xxx"
**
** where xxx is one of "DISTINCT", "ORDER BY" or "GROUP BY". Exactly which
** is determined by the zUsage argument.
*/
static void explainTempTable(Parse *pParse, const char *zUsage){


  ExplainQueryPlan((pParse, 0, "USE TEMP B-TREE FOR %s", zUsage));


}

/*
** Assign expression b to lvalue a. A second, no-op, version of this macro
** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code
** in sqlite3Select() to assign values to structure member variables that
** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the
................................................................................

#else
/* No-op versions of the explainXXX() functions and macros. */
# define explainTempTable(y,z)
# define explainSetInteger(y,z)
#endif






































/*
** If the inner loop was generated using a non-null pOrderBy argument,
** then the results were placed in a sorter.  After the loop is terminated
** we need to run the sorter and output the results.  The following
** routine generates the code needed to do that.
*/
................................................................................
#ifndef SQLITE_OMIT_EXPLAIN
  /* If this is an EXPLAIN, skip this step */
  if( pParse->explain ){
    return;
  }
#endif

  if( pParse->colNamesSet ) return;
  /* Column names are determined by the left-most term of a compound select */
  while( pSelect->pPrior ) pSelect = pSelect->pPrior;
  SELECTTRACE(1,pParse,pSelect,("generating column names\n"));
  pTabList = pSelect->pSrc;
  pEList = pSelect->pEList;
  assert( v!=0 );
  assert( pTabList!=0 );
................................................................................
  }

  /* Detach the ORDER BY clause from the compound SELECT */
  p->pOrderBy = 0;

  /* Store the results of the setup-query in Queue. */
  pSetup->pNext = 0;
  ExplainQueryPlan((pParse, 1, "SETUP"));
  rc = sqlite3Select(pParse, pSetup, &destQueue);
  pSetup->pNext = p;
  if( rc ) goto end_of_recursive_query;

  /* Find the next row in the Queue and output that row */
  addrTop = sqlite3VdbeAddOp2(v, OP_Rewind, iQueue, addrBreak); VdbeCoverage(v);

................................................................................
  /* Execute the recursive SELECT taking the single row in Current as
  ** the value for the recursive-table. Store the results in the Queue.
  */
  if( p->selFlags & SF_Aggregate ){
    sqlite3ErrorMsg(pParse, "recursive aggregate queries not supported");
  }else{
    p->pPrior = 0;
    ExplainQueryPlan((pParse, 1, "RECURSIVE STEP"));
    sqlite3Select(pParse, p, &destQueue);
    assert( p->pPrior==0 );
    p->pPrior = pSetup;
  }

  /* Keep running the loop until the Queue is empty */
  sqlite3VdbeGoto(v, addrTop);
................................................................................
** Since the limit is exactly 1, we only need to evalutes the left-most VALUES.
*/
static int multiSelectValues(
  Parse *pParse,        /* Parsing context */
  Select *p,            /* The right-most of SELECTs to be coded */
  SelectDest *pDest     /* What to do with query results */
){


  int nRow = 1;
  int rc = 0;
  int bShowAll = p->pLimit==0;
  assert( p->selFlags & SF_MultiValue );
  do{
    assert( p->selFlags & SF_Values );
    assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
    assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr );
    if( p->pPrior==0 ) break;
    assert( p->pPrior->pNext==p );
    p = p->pPrior;
    nRow += bShowAll;
  }while(1);
  ExplainQueryPlan((pParse, 0, "SCAN %d CONSTANT ROW%s", nRow,
                    nRow==1 ? "" : "S"));
  while( p ){


    selectInnerLoop(pParse, p, -1, 0, 0, pDest, 1, 1);
    if( !bShowAll ) break;

    p->nSelectRow = nRow;
    p = p->pNext;
  }
  return rc;
}

/*
................................................................................
){
  int rc = SQLITE_OK;   /* Success code from a subroutine */
  Select *pPrior;       /* Another SELECT immediately to our left */
  Vdbe *v;              /* Generate code to this VDBE */
  SelectDest dest;      /* Alternative data destination */
  Select *pDelete = 0;  /* Chain of simple selects to delete */
  sqlite3 *db;          /* Database connection */





  /* Make sure there is no ORDER BY or LIMIT clause on prior SELECTs.  Only
  ** the last (right-most) SELECT in the series may have an ORDER BY or LIMIT.
  */
  assert( p && p->pPrior );  /* Calling function guarantees this much */
  assert( (p->selFlags & SF_Recursive)==0 || p->op==TK_ALL || p->op==TK_UNION );
  db = pParse->db;
................................................................................
  }else
#endif

  /* Compound SELECTs that have an ORDER BY clause are handled separately.
  */
  if( p->pOrderBy ){
    return multiSelectOrderBy(pParse, p, pDest);
  }else{

#ifndef SQLITE_OMIT_EXPLAIN
    if( pPrior->pPrior==0 ){
      ExplainQueryPlan((pParse, 1, "COMPOUND QUERY"));
      ExplainQueryPlan((pParse, 1, "LEFT-MOST SUBQUERY"));
    }
#endif

    /* Generate code for the left and right SELECT statements.
    */
    switch( p->op ){
      case TK_ALL: {
        int addr = 0;
        int nLimit;
        assert( !pPrior->pLimit );
        pPrior->iLimit = p->iLimit;
        pPrior->iOffset = p->iOffset;
        pPrior->pLimit = p->pLimit;

        rc = sqlite3Select(pParse, pPrior, &dest);
        p->pLimit = 0;
        if( rc ){
          goto multi_select_end;
        }
        p->pPrior = 0;
        p->iLimit = pPrior->iLimit;
        p->iOffset = pPrior->iOffset;
        if( p->iLimit ){
          addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v);
          VdbeComment((v, "Jump ahead if LIMIT reached"));
          if( p->iOffset ){
            sqlite3VdbeAddOp3(v, OP_OffsetLimit,
                              p->iLimit, p->iOffset+1, p->iOffset);
          }
        }

        ExplainQueryPlan((pParse, 1, "UNION ALL"));
        rc = sqlite3Select(pParse, p, &dest);
        testcase( rc!=SQLITE_OK );
        pDelete = p->pPrior;
        p->pPrior = pPrior;
        p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
        if( pPrior->pLimit
         && sqlite3ExprIsInteger(pPrior->pLimit->pLeft, &nLimit)
         && nLimit>0 && p->nSelectRow > sqlite3LogEst((u64)nLimit) 
        ){
          p->nSelectRow = sqlite3LogEst((u64)nLimit);
        }
        if( addr ){
          sqlite3VdbeJumpHere(v, addr);
        }
        break;
      }
      case TK_EXCEPT:
      case TK_UNION: {
        int unionTab;    /* Cursor number of the temp table holding result */
        u8 op = 0;       /* One of the SRT_ operations to apply to self */
        int priorOp;     /* The SRT_ operation to apply to prior selects */
        Expr *pLimit;    /* Saved values of p->nLimit  */
        int addr;
        SelectDest uniondest;
  
        testcase( p->op==TK_EXCEPT );
        testcase( p->op==TK_UNION );
        priorOp = SRT_Union;
        if( dest.eDest==priorOp ){
          /* We can reuse a temporary table generated by a SELECT to our
          ** right.
          */
          assert( p->pLimit==0 );      /* Not allowed on leftward elements */
          unionTab = dest.iSDParm;
        }else{
          /* We will need to create our own temporary table to hold the
          ** intermediate results.
          */
          unionTab = pParse->nTab++;
          assert( p->pOrderBy==0 );
          addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, unionTab, 0);
          assert( p->addrOpenEphm[0] == -1 );
          p->addrOpenEphm[0] = addr;
          findRightmost(p)->selFlags |= SF_UsesEphemeral;
          assert( p->pEList );
        }
  
        /* Code the SELECT statements to our left
        */
        assert( !pPrior->pOrderBy );
        sqlite3SelectDestInit(&uniondest, priorOp, unionTab);

        rc = sqlite3Select(pParse, pPrior, &uniondest);
        if( rc ){
          goto multi_select_end;
        }
  
        /* Code the current SELECT statement
        */
        if( p->op==TK_EXCEPT ){
          op = SRT_Except;
        }else{
          assert( p->op==TK_UNION );
          op = SRT_Union;
        }
        p->pPrior = 0;
        pLimit = p->pLimit;
        p->pLimit = 0;
        uniondest.eDest = op;

        ExplainQueryPlan((pParse, 1, "%s USING TEMP B-TREE",
                          selectOpName(p->op)));
        rc = sqlite3Select(pParse, p, &uniondest);
        testcase( rc!=SQLITE_OK );
        /* Query flattening in sqlite3Select() might refill p->pOrderBy.
        ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */
        sqlite3ExprListDelete(db, p->pOrderBy);
        pDelete = p->pPrior;
        p->pPrior = pPrior;
        p->pOrderBy = 0;
        if( p->op==TK_UNION ){
          p->nSelectRow = sqlite3LogEstAdd(p->nSelectRow, pPrior->nSelectRow);
        }
        sqlite3ExprDelete(db, p->pLimit);
        p->pLimit = pLimit;
        p->iLimit = 0;
        p->iOffset = 0;
  
        /* Convert the data in the temporary table into whatever form
        ** it is that we currently need.
        */
        assert( unionTab==dest.iSDParm || dest.eDest!=priorOp );
        if( dest.eDest!=priorOp ){
          int iCont, iBreak, iStart;
          assert( p->pEList );
          iBreak = sqlite3VdbeMakeLabel(v);
          iCont = sqlite3VdbeMakeLabel(v);
          computeLimitRegisters(pParse, p, iBreak);
          sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); VdbeCoverage(v);
          iStart = sqlite3VdbeCurrentAddr(v);
          selectInnerLoop(pParse, p, unionTab,
                          0, 0, &dest, iCont, iBreak);
          sqlite3VdbeResolveLabel(v, iCont);
          sqlite3VdbeAddOp2(v, OP_Next, unionTab, iStart); VdbeCoverage(v);
          sqlite3VdbeResolveLabel(v, iBreak);
          sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0);
        }
        break;
      }
      default: assert( p->op==TK_INTERSECT ); {
        int tab1, tab2;
        int iCont, iBreak, iStart;
        Expr *pLimit;
        int addr;
        SelectDest intersectdest;
        int r1;
  
        /* INTERSECT is different from the others since it requires
        ** two temporary tables.  Hence it has its own case.  Begin
        ** by allocating the tables we will need.
        */
        tab1 = pParse->nTab++;
        tab2 = pParse->nTab++;
        assert( p->pOrderBy==0 );
  
        addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab1, 0);
        assert( p->addrOpenEphm[0] == -1 );
        p->addrOpenEphm[0] = addr;
        findRightmost(p)->selFlags |= SF_UsesEphemeral;
        assert( p->pEList );
  
        /* Code the SELECTs to our left into temporary table "tab1".
        */
        sqlite3SelectDestInit(&intersectdest, SRT_Union, tab1);

        rc = sqlite3Select(pParse, pPrior, &intersectdest);
        if( rc ){
          goto multi_select_end;
        }
  
        /* Code the current SELECT into temporary table "tab2"
        */
        addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0);
        assert( p->addrOpenEphm[1] == -1 );
        p->addrOpenEphm[1] = addr;
        p->pPrior = 0;
        pLimit = p->pLimit;
        p->pLimit = 0;
        intersectdest.iSDParm = tab2;

        ExplainQueryPlan((pParse, 1, "%s USING TEMP B-TREE",
                          selectOpName(p->op)));
        rc = sqlite3Select(pParse, p, &intersectdest);
        testcase( rc!=SQLITE_OK );
        pDelete = p->pPrior;
        p->pPrior = pPrior;
        if( p->nSelectRow>pPrior->nSelectRow ){
          p->nSelectRow = pPrior->nSelectRow;
        }
        sqlite3ExprDelete(db, p->pLimit);
        p->pLimit = pLimit;
  
        /* Generate code to take the intersection of the two temporary
        ** tables.
        */
        assert( p->pEList );
        iBreak = sqlite3VdbeMakeLabel(v);
        iCont = sqlite3VdbeMakeLabel(v);
        computeLimitRegisters(pParse, p, iBreak);
        sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); VdbeCoverage(v);
        r1 = sqlite3GetTempReg(pParse);
        iStart = sqlite3VdbeAddOp2(v, OP_RowData, tab1, r1);
        sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0);
        VdbeCoverage(v);
        sqlite3ReleaseTempReg(pParse, r1);
        selectInnerLoop(pParse, p, tab1,
                        0, 0, &dest, iCont, iBreak);
        sqlite3VdbeResolveLabel(v, iCont);
        sqlite3VdbeAddOp2(v, OP_Next, tab1, iStart); VdbeCoverage(v);
        sqlite3VdbeResolveLabel(v, iBreak);
        sqlite3VdbeAddOp2(v, OP_Close, tab2, 0);
        sqlite3VdbeAddOp2(v, OP_Close, tab1, 0);
        break;
      }
    }
  

  #ifndef SQLITE_OMIT_EXPLAIN
    if( p->pNext==0 ){
      ExplainQueryPlanPop(pParse);
    }
  #endif
  }
  
  /* Compute collating sequences used by 
  ** temporary tables needed to implement the compound select.
  ** Attach the KeyInfo structure to all temporary tables.
  **
  ** This section is run by the right-most SELECT statement only.
  ** SELECT statements to the left always skip this part.  The right-most
  ** SELECT might also skip this part if it has no ORDER BY clause and
................................................................................
  int op;               /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */
  KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */
  KeyInfo *pKeyMerge;   /* Comparison information for merging rows */
  sqlite3 *db;          /* Database connection */
  ExprList *pOrderBy;   /* The ORDER BY clause */
  int nOrderBy;         /* Number of terms in the ORDER BY clause */
  int *aPermute;        /* Mapping from ORDER BY terms to result set columns */





  assert( p->pOrderBy!=0 );
  assert( pKeyDup==0 ); /* "Managed" code needs this.  Ticket #3382. */
  db = pParse->db;
  v = pParse->pVdbe;
  assert( v!=0 );       /* Already thrown the error if VDBE alloc failed */
  labelEnd = sqlite3VdbeMakeLabel(v);
................................................................................
  regAddrA = ++pParse->nMem;
  regAddrB = ++pParse->nMem;
  regOutA = ++pParse->nMem;
  regOutB = ++pParse->nMem;
  sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA);
  sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB);

  ExplainQueryPlan((pParse, 1, "MERGE (%s)", selectOpName(p->op)));

  /* Generate a coroutine to evaluate the SELECT statement to the
  ** left of the compound operator - the "A" select.
  */
  addrSelectA = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA);
  VdbeComment((v, "left SELECT"));
  pPrior->iLimit = regLimitA;
  ExplainQueryPlan((pParse, 1, "LEFT"));
  sqlite3Select(pParse, pPrior, &destA);
  sqlite3VdbeEndCoroutine(v, regAddrA);
  sqlite3VdbeJumpHere(v, addr1);

  /* Generate a coroutine to evaluate the SELECT statement on 
  ** the right - the "B" select
  */
................................................................................
  addrSelectB = sqlite3VdbeCurrentAddr(v) + 1;
  addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB);
  VdbeComment((v, "right SELECT"));
  savedLimit = p->iLimit;
  savedOffset = p->iOffset;
  p->iLimit = regLimitB;
  p->iOffset = 0;  
  ExplainQueryPlan((pParse, 1, "RIGHT"));
  sqlite3Select(pParse, p, &destB);
  p->iLimit = savedLimit;
  p->iOffset = savedOffset;
  sqlite3VdbeEndCoroutine(v, regAddrB);

  /* Generate a subroutine that outputs the current row of the A
  ** select as the next output row of the compound select.
................................................................................
    sqlite3SelectDelete(db, p->pPrior);
  }
  p->pPrior = pPrior;
  pPrior->pNext = p;

  /*** TBD:  Insert subroutine calls to close cursors on incomplete
  **** subqueries ****/
  ExplainQueryPlanPop(pParse);
  return pParse->nErr!=0;
}
#endif

#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)

/* An instance of the SubstContext object describes an substitution edit
................................................................................
static void explainSimpleCount(
  Parse *pParse,                  /* Parse context */
  Table *pTab,                    /* Table being queried */
  Index *pIdx                     /* Index used to optimize scan, or NULL */
){
  if( pParse->explain==2 ){
    int bCover = (pIdx!=0 && (HasRowid(pTab) || !IsPrimaryKeyIndex(pIdx)));
    sqlite3VdbeExplain(pParse, 0, "SCAN TABLE %s%s%s",
        pTab->zName,
        bCover ? " USING COVERING INDEX " : "",
        bCover ? pIdx->zName : ""
    );



  }
}
#else
# define explainSimpleCount(a,b,c)
#endif

/*
................................................................................
  SortCtx sSort;         /* Info on how to code the ORDER BY clause */
  AggInfo sAggInfo;      /* Information used by aggregate queries */
  int iEnd;              /* Address of the end of the query */
  sqlite3 *db;           /* The database connection */
  ExprList *pMinMaxOrderBy = 0;  /* Added ORDER BY for min/max queries */
  u8 minMaxFlag;                 /* Flag for min/max queries */






  db = pParse->db;
  v = sqlite3GetVdbe(pParse);
  if( p==0 || db->mallocFailed || pParse->nErr ){
    return 1;
  }
  if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1;
  memset(&sAggInfo, 0, sizeof(sAggInfo));
#if SELECTTRACE_ENABLED



  SELECTTRACE(1,pParse,p, ("begin processing:\n", pParse->addrExplain));
  if( sqlite3SelectTrace & 0x100 ){
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif

  assert( p->pOrderBy==0 || pDest->eDest!=SRT_DistFifo );
  assert( p->pOrderBy==0 || pDest->eDest!=SRT_Fifo );
................................................................................
#if SELECTTRACE_ENABLED
  if( sqlite3SelectTrace & 0x104 ){
    SELECTTRACE(0x104,pParse,p, ("after name resolution:\n"));
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif





  if( pDest->eDest==SRT_Output ){
    generateColumnNames(pParse, p);
  }

  /* Try to various optimizations (flattening subqueries, and strength
  ** reduction of join operators) in the FROM clause up into the main query
  */
................................................................................
  /* Handle compound SELECT statements using the separate multiSelect()
  ** procedure.
  */
  if( p->pPrior ){
    rc = multiSelect(pParse, p, pDest);
#if SELECTTRACE_ENABLED
    SELECTTRACE(0x1,pParse,p,("end compound-select processing\n"));
    if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
      sqlite3TreeViewSelect(0, p, 0);
    }
#endif
    if( p->pNext==0 ) ExplainQueryPlanPop(pParse);
    return rc;
  }
#endif

  /* For each term in the FROM clause, do two things:
  ** (1) Authorized unreferenced tables
  ** (2) Generate code for all sub-queries
................................................................................
      int addrTop = sqlite3VdbeCurrentAddr(v)+1;
     
      pItem->regReturn = ++pParse->nMem;
      sqlite3VdbeAddOp3(v, OP_InitCoroutine, pItem->regReturn, 0, addrTop);
      VdbeComment((v, "%s", pItem->pTab->zName));
      pItem->addrFillSub = addrTop;
      sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn);
      ExplainQueryPlan((pParse, 1, "CO-ROUTINE 0x%p", pSub));
      sqlite3Select(pParse, pSub, &dest);
      pItem->pTab->nRowLogEst = pSub->nSelectRow;
      pItem->fg.viaCoroutine = 1;
      pItem->regResult = dest.iSdst;
      sqlite3VdbeEndCoroutine(v, pItem->regReturn);
      sqlite3VdbeJumpHere(v, addrTop-1);
      sqlite3ClearTempRegCache(pParse);
................................................................................
        VdbeComment((v, "materialize \"%s\"", pItem->pTab->zName));
      }else{
        VdbeNoopComment((v, "materialize \"%s\"", pItem->pTab->zName));
      }
      pPrior = isSelfJoinView(pTabList, pItem);
      if( pPrior ){
        sqlite3VdbeAddOp2(v, OP_OpenDup, pItem->iCursor, pPrior->iCursor);

        assert( pPrior->pSelect!=0 );
        pSub->nSelectRow = pPrior->pSelect->nSelectRow;
      }else{
        sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor);
        ExplainQueryPlan((pParse, 1, "MATERIALIZE 0x%p", pSub));
        sqlite3Select(pParse, pSub, &dest);
      }
      pItem->pTab->nRowLogEst = pSub->nSelectRow;
      if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr);
      retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn);
      VdbeComment((v, "end %s", pItem->pTab->zName));
      sqlite3VdbeChangeP1(v, topAddr, retAddr);
................................................................................
  */
select_end:
  sqlite3ExprListDelete(db, pMinMaxOrderBy);
  sqlite3DbFree(db, sAggInfo.aCol);
  sqlite3DbFree(db, sAggInfo.aFunc);
#if SELECTTRACE_ENABLED
  SELECTTRACE(0x1,pParse,p,("end processing\n"));
  if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
    sqlite3TreeViewSelect(0, p, 0);
  }
#endif
  ExplainQueryPlanPop(pParse);
  return rc;
}

/************** End of select.c **********************************************/
/************** Begin file table.c *******************************************/
/*
** 2001 September 15
................................................................................

  /* printf("SQL: [%s]\n", zSql); fflush(stdout); */
  rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0);
  if( rc!=SQLITE_OK ) return rc;
  while( SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){
    const char *zSubSql = (const char*)sqlite3_column_text(pStmt,0);
    assert( sqlite3_strnicmp(zSql,"SELECT",6)==0 );
    /* The secondary SQL must be one of CREATE TABLE, CREATE INDEX,
    ** or INSERT.  Historically there have been attacks that first
    ** corrupt the sqlite_master.sql field with other kinds of statements
    ** then run VACUUM to get those statements to execute at inappropriate
    ** times. */
    if( zSubSql
     && (strncmp(zSubSql,"CRE",3)==0 || strncmp(zSubSql,"INS",3)==0)
    ){
      rc = execSql(db, pzErrMsg, zSubSql);
      if( rc!=SQLITE_OK ) break;
    }
  }
  assert( rc!=SQLITE_ROW );
  if( rc==SQLITE_DONE ) rc = SQLITE_OK;
  if( rc ){
................................................................................
      " WHERE type='table'AND name<>'sqlite_sequence'"
      " AND coalesce(rootpage,1)>0",
      zDbMain
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  rc = execSqlF(db, pzErrMsg,
      "SELECT sql FROM \"%w\".sqlite_master"
      " WHERE type='index'",
      zDbMain
  );
  if( rc!=SQLITE_OK ) goto end_of_vacuum;
  db->init.iDb = 0;

  /* Loop through the tables in the main database. For each, do
  ** an "INSERT INTO vacuum_db.xxx SELECT * FROM main.xxx;" to copy
................................................................................

/* wherecode.c: */
#ifndef SQLITE_OMIT_EXPLAIN
SQLITE_PRIVATE int sqlite3WhereExplainOneScan(
  Parse *pParse,                  /* Parse context */
  SrcList *pTabList,              /* Table list this loop refers to */
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */


  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
);
#else
# define sqlite3WhereExplainOneScan(u,v,w,x) 0
#endif /* SQLITE_OMIT_EXPLAIN */
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
SQLITE_PRIVATE void sqlite3WhereAddScanStatus(
  Vdbe *v,                        /* Vdbe to add scanstatus entry to */
  SrcList *pSrclist,              /* FROM clause pLvl reads data from */
  WhereLevel *pLvl,               /* Level to add scanstatus() entry for */
  int addrExplain                 /* Address of OP_Explain (or 0) */
................................................................................
  int iTerm,                  /* Zero-based index of first term. */
  int bAnd,                   /* Non-zero to append " AND " */
  const char *zOp             /* Name of the operator */
){
  int i;

  assert( nTerm>=1 );
  if( bAnd ) sqlite3_str_append(pStr, " AND ", 5);

  if( nTerm>1 ) sqlite3_str_append(pStr, "(", 1);
  for(i=0; i<nTerm; i++){
    if( i ) sqlite3_str_append(pStr, ",", 1);
    sqlite3_str_appendall(pStr, explainIndexColumnName(pIdx, iTerm+i));
  }
  if( nTerm>1 ) sqlite3_str_append(pStr, ")", 1);

  sqlite3_str_append(pStr, zOp, 1);

  if( nTerm>1 ) sqlite3_str_append(pStr, "(", 1);
  for(i=0; i<nTerm; i++){
    if( i ) sqlite3_str_append(pStr, ",", 1);
    sqlite3_str_append(pStr, "?", 1);
  }
  if( nTerm>1 ) sqlite3_str_append(pStr, ")", 1);
}

/*
** Argument pLevel describes a strategy for scanning table pTab. This 
** function appends text to pStr that describes the subset of table
** rows scanned by the strategy in the form of an SQL expression.
**
................................................................................
static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop){
  Index *pIndex = pLoop->u.btree.pIndex;
  u16 nEq = pLoop->u.btree.nEq;
  u16 nSkip = pLoop->nSkip;
  int i, j;

  if( nEq==0 && (pLoop->wsFlags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))==0 ) return;
  sqlite3_str_append(pStr, " (", 2);
  for(i=0; i<nEq; i++){
    const char *z = explainIndexColumnName(pIndex, i);
    if( i ) sqlite3_str_append(pStr, " AND ", 5);
    sqlite3_str_appendf(pStr, i>=nSkip ? "%s=?" : "ANY(%s)", z);
  }

  j = i;
  if( pLoop->wsFlags&WHERE_BTM_LIMIT ){
    explainAppendTerm(pStr, pIndex, pLoop->u.btree.nBtm, j, i, ">");
    i = 1;
  }
  if( pLoop->wsFlags&WHERE_TOP_LIMIT ){
    explainAppendTerm(pStr, pIndex, pLoop->u.btree.nTop, j, i, "<");
  }
  sqlite3_str_append(pStr, ")", 1);
}

/*
** This function is a no-op unless currently processing an EXPLAIN QUERY PLAN
** command, or if either SQLITE_DEBUG or SQLITE_ENABLE_STMT_SCANSTATUS was
** defined at compile-time. If it is not a no-op, a single OP_Explain opcode 
** is added to the output to describe the table scan strategy in pLevel.
................................................................................
** If an OP_Explain opcode is added to the VM, its address is returned.
** Otherwise, if no OP_Explain is coded, zero is returned.
*/
SQLITE_PRIVATE int sqlite3WhereExplainOneScan(
  Parse *pParse,                  /* Parse context */
  SrcList *pTabList,              /* Table list this loop refers to */
  WhereLevel *pLevel,             /* Scan to write OP_Explain opcode for */


  u16 wctrlFlags                  /* Flags passed to sqlite3WhereBegin() */
){
  int ret = 0;
#if !defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_STMT_SCANSTATUS)
  if( sqlite3ParseToplevel(pParse)->explain==2 )
#endif
  {
    struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom];
    Vdbe *v = pParse->pVdbe;      /* VM being constructed */
    sqlite3 *db = pParse->db;     /* Database handle */

    int isSearch;                 /* True for a SEARCH. False for SCAN. */
    WhereLoop *pLoop;             /* The controlling WhereLoop object */
    u32 flags;                    /* Flags that describe this loop */
    char *zMsg;                   /* Text to add to EQP output */
    StrAccum str;                 /* EQP output string */
    char zBuf[100];               /* Initial space for EQP output string */

................................................................................
    if( (flags&WHERE_MULTI_OR) || (wctrlFlags&WHERE_OR_SUBCLAUSE) ) return 0;

    isSearch = (flags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))!=0
            || ((flags&WHERE_VIRTUALTABLE)==0 && (pLoop->u.btree.nEq>0))
            || (wctrlFlags&(WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX));

    sqlite3StrAccumInit(&str, db, zBuf, sizeof(zBuf), SQLITE_MAX_LENGTH);
    sqlite3_str_appendall(&str, isSearch ? "SEARCH" : "SCAN");
    if( pItem->pSelect ){
      sqlite3_str_appendf(&str, " SUBQUERY 0x%p", pItem->pSelect);
    }else{
      sqlite3_str_appendf(&str, " TABLE %s", pItem->zName);
    }

    if( pItem->zAlias ){
      sqlite3_str_appendf(&str, " AS %s", pItem->zAlias);
    }
    if( (flags & (WHERE_IPK|WHERE_VIRTUALTABLE))==0 ){
      const char *zFmt = 0;
      Index *pIdx;

      assert( pLoop->u.btree.pIndex!=0 );
      pIdx = pLoop->u.btree.pIndex;
................................................................................
        zFmt = "AUTOMATIC COVERING INDEX";
      }else if( flags & WHERE_IDX_ONLY ){
        zFmt = "COVERING INDEX %s";
      }else{
        zFmt = "INDEX %s";
      }
      if( zFmt ){
        sqlite3_str_append(&str, " USING ", 7);
        sqlite3_str_appendf(&str, zFmt, pIdx->zName);
        explainIndexRange(&str, pLoop);
      }
    }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){
      const char *zRangeOp;
      if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){
        zRangeOp = "=";
      }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){
................................................................................
        zRangeOp = ">? AND rowid<";
      }else if( flags&WHERE_BTM_LIMIT ){
        zRangeOp = ">";
      }else{
        assert( flags&WHERE_TOP_LIMIT);
        zRangeOp = "<";
      }
      sqlite3_str_appendf(&str, 
          " USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp);
    }
#ifndef SQLITE_OMIT_VIRTUALTABLE
    else if( (flags & WHERE_VIRTUALTABLE)!=0 ){
      sqlite3_str_appendf(&str, " VIRTUAL TABLE INDEX %d:%s",
                  pLoop->u.vtab.idxNum, pLoop->u.vtab.idxStr);
    }
#endif
#ifdef SQLITE_EXPLAIN_ESTIMATED_ROWS
    if( pLoop->nOut>=10 ){
      sqlite3_str_appendf(&str, " (~%llu rows)",
             sqlite3LogEstToInt(pLoop->nOut));
    }else{
      sqlite3_str_append(&str, " (~1 row)", 9);
    }
#endif
    zMsg = sqlite3StrAccumFinish(&str);
    ret = sqlite3VdbeAddOp4(v, OP_Explain, sqlite3VdbeCurrentAddr(v),
                            pParse->addrExplain, 0, zMsg,P4_DYNAMIC);
  }
  return ret;
}
#endif /* SQLITE_OMIT_EXPLAIN */

#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
/*
................................................................................
    }

    /* Run a separate WHERE clause for each term of the OR clause.  After
    ** eliminating duplicates from other WHERE clauses, the action for each
    ** sub-WHERE clause is to to invoke the main loop body as a subroutine.
    */
    wctrlFlags =  WHERE_OR_SUBCLAUSE | (pWInfo->wctrlFlags & WHERE_SEEK_TABLE);
    ExplainQueryPlan((pParse, 1, "MULTI-INDEX OR"));
    for(ii=0; ii<pOrWc->nTerm; ii++){
      WhereTerm *pOrTerm = &pOrWc->a[ii];
      if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
        WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
        Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
        int jmp1 = 0;                   /* Address of jump operation */
        assert( (pTabItem[0].fg.jointype & JT_LEFT)==0 
................................................................................
        WHERETRACE(0xffff, ("Subplan for OR-clause:\n"));
        pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0,
                                      wctrlFlags, iCovCur);
        assert( pSubWInfo || pParse->nErr || db->mallocFailed );
        if( pSubWInfo ){
          WhereLoop *pSubLoop;
          int addrExplain = sqlite3WhereExplainOneScan(
              pParse, pOrTab, &pSubWInfo->a[0], 0
          );
          sqlite3WhereAddScanStatus(v, pOrTab, &pSubWInfo->a[0], addrExplain);

          /* This is the sub-WHERE clause body.  First skip over
          ** duplicate rows from prior sub-WHERE clauses, and record the
          ** rowid (or PRIMARY KEY) for the current row so that the same
          ** row will be skipped in subsequent sub-WHERE clauses.
................................................................................
          }

          /* Finish the loop through table entries that match term pOrTerm. */
          sqlite3WhereEnd(pSubWInfo);
        }
      }
    }
    ExplainQueryPlanPop(pParse);
    pLevel->u.pCovidx = pCov;
    if( pCov ) pLevel->iIdxCur = iCovCur;
    if( pAndExpr ){
      pAndExpr->pLeft = 0;
      sqlite3ExprDelete(db, pAndExpr);
    }
    sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v));
................................................................................
  /* Special case: No FROM clause
  */
  if( nTabList==0 ){
    if( pOrderBy ) pWInfo->nOBSat = pOrderBy->nExpr;
    if( wctrlFlags & WHERE_WANT_DISTINCT ){
      pWInfo->eDistinct = WHERE_DISTINCT_UNIQUE;
    }
    ExplainQueryPlan((pParse, 0, "SCAN CONSTANT ROW"));
  }else{
    /* Assign a bit from the bitmask to every term in the FROM clause.
    **
    ** The N-th term of the FROM clause is assigned a bitmask of 1<<N.
    **
    ** The rule of the previous sentence ensures thta if X is the bitmask for
    ** a table T, then X-1 is the bitmask for all other tables to the left of T.
................................................................................
    if( (pLevel->pWLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
      constructAutomaticIndex(pParse, &pWInfo->sWC,
                &pTabList->a[pLevel->iFrom], notReady, pLevel);
      if( db->mallocFailed ) goto whereBeginError;
    }
#endif
    addrExplain = sqlite3WhereExplainOneScan(
        pParse, pTabList, pLevel, wctrlFlags
    );
    pLevel->addrBody = sqlite3VdbeCurrentAddr(v);
    notReady = sqlite3WhereCodeOneLoopStart(pWInfo, ii, notReady);
    pWInfo->iContinue = pLevel->addrCont;
    if( (wsFlags&WHERE_MULTI_OR)==0 && (wctrlFlags&WHERE_OR_SUBCLAUSE)==0 ){
      sqlite3WhereAddScanStatus(v, pTabList, pLevel, addrExplain);
    }
................................................................................
        { SQLITE_DBCONFIG_ENABLE_FKEY,           SQLITE_ForeignKeys    },
        { SQLITE_DBCONFIG_ENABLE_TRIGGER,        SQLITE_EnableTrigger  },
        { SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER, SQLITE_Fts3Tokenizer  },
        { SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, SQLITE_LoadExtension  },
        { SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE,      SQLITE_NoCkptOnClose  },
        { SQLITE_DBCONFIG_ENABLE_QPSG,           SQLITE_EnableQPSG     },
        { SQLITE_DBCONFIG_TRIGGER_EQP,           SQLITE_TriggerEQP     },
        { SQLITE_DBCONFIG_RESET_DATABASE,        SQLITE_ResetDatabase  },
      };
      unsigned int i;
      rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
      for(i=0; i<ArraySize(aFlagOp); i++){
        if( aFlagOp[i].op==op ){
          int onoff = va_arg(ap, int);
          int *pRes = va_arg(ap, int*);
................................................................................

/* fts3_expr.c */
SQLITE_PRIVATE int sqlite3Fts3ExprParse(sqlite3_tokenizer *, int,
  char **, int, int, int, const char *, int, Fts3Expr **, char **
);
SQLITE_PRIVATE void sqlite3Fts3ExprFree(Fts3Expr *);
#ifdef SQLITE_TEST
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash*);
SQLITE_PRIVATE int sqlite3Fts3InitTerm(sqlite3 *db);
#endif

SQLITE_PRIVATE int sqlite3Fts3OpenTokenizer(sqlite3_tokenizer *, int, const char *, int,
  sqlite3_tokenizer_cursor **
);

................................................................................
    ){
      rc = SQLITE_NOMEM;
    }
  }

#ifdef SQLITE_TEST
  if( rc==SQLITE_OK ){
    rc = sqlite3Fts3ExprInitTestInterface(db, pHash);
  }
#endif

  /* Create the virtual table wrapper around the hash-table and overload 
  ** the four scalar functions. If this is successful, register the
  ** module with sqlite.
  */
................................................................................
** Everything after this point is just test code.
*/

#ifdef SQLITE_TEST

/* #include <stdio.h> */





























/*
** Return a pointer to a buffer containing a text representation of the
** expression passed as the first argument. The buffer is obtained from
** sqlite3_malloc(). It is the responsibility of the caller to use 
** sqlite3_free() to release the memory. If an OOM condition is encountered,
** NULL is returned.
**
................................................................................
** to parse the query expression (see README.tokenizers). The second argument
** is the query expression to parse. Each subsequent argument is the name
** of a column of the fts3 table that the query expression may refer to.
** For example:
**
**   SELECT fts3_exprtest('simple', 'Bill col2:Bloggs', 'col1', 'col2');
*/
static void fts3ExprTestCommon(
  int bRebalance,
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){

  sqlite3_tokenizer *pTokenizer = 0;
  int rc;
  char **azCol = 0;
  const char *zExpr;
  int nExpr;
  int nCol;
  int ii;
  Fts3Expr *pExpr;
  char *zBuf = 0;
  Fts3Hash *pHash = (Fts3Hash*)sqlite3_user_data(context);
  const char *zTokenizer = 0;
  char *zErr = 0;

  if( argc<3 ){
    sqlite3_result_error(context, 
        "Usage: fts3_exprtest(tokenizer, expr, col1, ...", -1
    );
    return;
  }


  zTokenizer = (const char*)sqlite3_value_text(argv[0]);
  rc = sqlite3Fts3InitTokenizer(pHash, zTokenizer, &pTokenizer, &zErr);
  if( rc!=SQLITE_OK ){
    if( rc==SQLITE_NOMEM ){
      sqlite3_result_error_nomem(context);

    }else{
      sqlite3_result_error(context, zErr, -1);

    }
    sqlite3_free(zErr);
    return;
  }








  zExpr = (const char *)sqlite3_value_text(argv[1]);
  nExpr = sqlite3_value_bytes(argv[1]);
  nCol = argc-2;
  azCol = (char **)sqlite3_malloc(nCol*sizeof(char *));
  if( !azCol ){
    sqlite3_result_error_nomem(context);
    goto exprtest_out;
  }
  for(ii=0; ii<nCol; ii++){
    azCol[ii] = (char *)sqlite3_value_text(argv[ii+2]);
  }

  if( bRebalance ){
    char *zDummy = 0;
    rc = sqlite3Fts3ExprParse(
        pTokenizer, 0, azCol, 0, nCol, nCol, zExpr, nExpr, &pExpr, &zDummy
    );
    assert( rc==SQLITE_OK || pExpr==0 );
    sqlite3_free(zDummy);
  }else{
................................................................................
    sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
    sqlite3_free(zBuf);
  }

  sqlite3Fts3ExprFree(pExpr);

exprtest_out:
  if( pTokenizer ){
    rc = pTokenizer->pModule->xDestroy(pTokenizer);
  }
  sqlite3_free(azCol);
}

static void fts3ExprTest(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  fts3ExprTestCommon(0, context, argc, argv);
}
static void fts3ExprTestRebalance(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  fts3ExprTestCommon(1, context, argc, argv);
}

/*
** Register the query expression parser test function fts3_exprtest() 
** with database connection db. 
*/
SQLITE_PRIVATE int sqlite3Fts3ExprInitTestInterface(sqlite3 *db, Fts3Hash *pHash){
  int rc = sqlite3_create_function(
      db, "fts3_exprtest", -1, SQLITE_UTF8, (void*)pHash, fts3ExprTest, 0, 0
  );
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "fts3_exprtest_rebalance", 
        -1, SQLITE_UTF8, (void*)pHash, fts3ExprTestRebalance, 0, 0
    );
  }
  return rc;
}

#endif
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */
................................................................................
**
** RBU_STATE_COOKIE:
**   Valid if STAGE==1. The current change-counter cookie value in the 
**   target db file.
**
** RBU_STATE_OALSZ:
**   Valid if STAGE==1. The size in bytes of the *-oal file.
**
** RBU_STATE_DATATBL:
**   Only valid if STAGE==1. The RBU database name of the table 
**   currently being read.
*/
#define RBU_STATE_STAGE        1
#define RBU_STATE_TBL          2
#define RBU_STATE_IDX          3
#define RBU_STATE_ROW          4
#define RBU_STATE_PROGRESS     5
#define RBU_STATE_CKPT         6
#define RBU_STATE_COOKIE       7
#define RBU_STATE_OALSZ        8
#define RBU_STATE_PHASEONESTEP 9
#define RBU_STATE_DATATBL     10

#define RBU_STAGE_OAL         1
#define RBU_STAGE_MOVE        2
#define RBU_STAGE_CAPTURE     3
#define RBU_STAGE_CKPT        4
#define RBU_STAGE_DONE        5

................................................................................

/*
** A structure to store values read from the rbu_state table in memory.
*/
struct RbuState {
  int eStage;
  char *zTbl;
  char *zDataTbl;
  char *zIdx;
  i64 iWalCksum;
  int nRow;
  i64 nProgress;
  u32 iCookie;
  i64 iOalSz;
  i64 nPhaseOneStep;
................................................................................

/*
** Free an RbuState object allocated by rbuLoadState().
*/
static void rbuFreeState(RbuState *p){
  if( p ){
    sqlite3_free(p->zTbl);
    sqlite3_free(p->zDataTbl);
    sqlite3_free(p->zIdx);
    sqlite3_free(p);
  }
}

/*
** Allocate an RbuState object and load the contents of the rbu_state 
................................................................................
      case RBU_STATE_OALSZ:
        pRet->iOalSz = (u32)sqlite3_column_int64(pStmt, 1);
        break;

      case RBU_STATE_PHASEONESTEP:
        pRet->nPhaseOneStep = sqlite3_column_int64(pStmt, 1);
        break;

      case RBU_STATE_DATATBL:
        pRet->zDataTbl = rbuStrndup((char*)sqlite3_column_text(pStmt, 1), &rc);
        break;

      default:
        rc = SQLITE_CORRUPT;
        break;
    }
  }
  rc2 = sqlite3_finalize(pStmt);
................................................................................
          "(%d, %Q), "
          "(%d, %Q), "
          "(%d, %d), "
          "(%d, %d), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %lld), "
          "(%d, %Q)  ",
          p->zStateDb,
          RBU_STATE_STAGE, eStage,
          RBU_STATE_TBL, p->objiter.zTbl, 
          RBU_STATE_IDX, p->objiter.zIdx, 
          RBU_STATE_ROW, p->nStep, 
          RBU_STATE_PROGRESS, p->nProgress,
          RBU_STATE_CKPT, p->iWalCksum,
          RBU_STATE_COOKIE, (i64)pFd->iCookie,
          RBU_STATE_OALSZ, p->iOalSz,
          RBU_STATE_PHASEONESTEP, p->nPhaseOneStep,
          RBU_STATE_DATATBL, p->objiter.zDataTbl
      )
    );
    assert( pInsert==0 || rc==SQLITE_OK );

    if( rc==SQLITE_OK ){
      sqlite3_step(pInsert);
      rc = sqlite3_finalize(pInsert);
................................................................................
  assert( p->rc==SQLITE_OK );
  if( pState->zTbl ){
    RbuObjIter *pIter = &p->objiter;
    int rc = SQLITE_OK;

    while( rc==SQLITE_OK && pIter->zTbl && (pIter->bCleanup 
       || rbuStrCompare(pIter->zIdx, pState->zIdx)
       || (pState->zDataTbl==0 && rbuStrCompare(pIter->zTbl, pState->zTbl))
       || (pState->zDataTbl && rbuStrCompare(pIter->zDataTbl, pState->zDataTbl))
    )){
      rc = rbuObjIterNext(p, pIter);
    }

    if( rc==SQLITE_OK && !pIter->zTbl ){
      rc = SQLITE_ERROR;
      p->zErrmsg = sqlite3_mprintf("rbu_state mismatch error");
................................................................................
static void fts5SourceIdFunc(
  sqlite3_context *pCtx,          /* Function call context */
  int nArg,                       /* Number of args */
  sqlite3_value **apUnused        /* Function arguments */
){
  assert( nArg==0 );
  UNUSED_PARAM2(nArg, apUnused);
  sqlite3_result_text(pCtx, "fts5: 2018-05-14 00:41:12 d0f35739af3b226c8eef39676407293650cde551acef06fe8628fdd5b59bd66a", -1, SQLITE_TRANSIENT);
}

static int fts5Init(sqlite3 *db){
  static const sqlite3_module fts5Mod = {
    /* iVersion      */ 2,
    /* xCreate       */ fts5CreateMethod,
    /* xConnect      */ fts5ConnectMethod,
................................................................................
#endif
  return rc;
}
#endif /* SQLITE_CORE */
#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */

/************** End of stmt.c ************************************************/
#if __LINE__!=211531
#undef SQLITE_SOURCE_ID
#define SQLITE_SOURCE_ID      "2018-05-14 00:41:12 d0f35739af3b226c8eef39676407293650cde551acef06fe8628fdd5b59balt2"
#endif
/* Return the source-id for this library */
SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
/************************** End of sqlite3.c ******************************/

Changes to src/sqlite3.h.

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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.24.0"
#define SQLITE_VERSION_NUMBER 3024000
#define SQLITE_SOURCE_ID      "2018-04-26 18:34:26 9fd0faf517993587d2f54212638545fc85fbbc84a031bcfae8c1e5894825d83b"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** behavior. The first parameter passed to this operation is an integer -
** positive to enable output for trigger programs, or zero to disable it,
** or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which is written 
** 0 or 1 to indicate whether output-for-triggers has been disabled - 0 if 
** it is not disabled, 1 if it is.  
** </dd>















** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */

#define SQLITE_DBCONFIG_MAX                   1008 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
** made NULL or made to point to memory obtained from [sqlite3_malloc]
** or else the use of the [data_store_directory pragma] should be avoided.
*/
SQLITE_API SQLITE_EXTERN char *sqlite3_data_directory;




































/*
** CAPI3REF: Test For Auto-Commit Mode
** KEYWORDS: {autocommit mode}
** METHOD: sqlite3
**
** ^The sqlite3_get_autocommit() interface returns non-zero or
** zero if the given database connection is or is not in autocommit mode,
................................................................................
** parsing ambiguity.  For example, the statement
** "CREATE TABLE BEGIN(REPLACE,PRAGMA,END);" is accepted by SQLite, and
** creates a new table named "BEGIN" with three columns named
** "REPLACE", "PRAGMA", and "END".  Nevertheless, best practice is to avoid
** using keywords as identifiers.  Common techniques used to avoid keyword
** name collisions include:
** <ul>
** <li> Put all indentifier names inside double-quotes.  This is the official
**      SQL way to escape identifier names.
** <li> Put identifier names inside &#91;...&#93;.  This is not standard SQL,
**      but it is what SQL Server does and so lots of programmers use this
**      technique.
** <li> Begin every identifier with the letter "Z" as no SQL keywords start
**      with "Z".
** <li> Include a digit somewhere in every identifier name.
................................................................................
** SQLite is compiled with the [-DSQLITE_OMIT_VACUUM] option.  Also,
** new keywords may be added to future releases of SQLite.
*/
SQLITE_API int sqlite3_keyword_count(void);
SQLITE_API int sqlite3_keyword_name(int,const char**,int*);
SQLITE_API int sqlite3_keyword_check(const char*,int);





























































































































/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes







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**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.24.0"
#define SQLITE_VERSION_NUMBER 3024000
#define SQLITE_SOURCE_ID      "2018-05-14 00:41:12 d0f35739af3b226c8eef39676407293650cde551acef06fe8628fdd5b59bd66a"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
................................................................................
** behavior. The first parameter passed to this operation is an integer -
** positive to enable output for trigger programs, or zero to disable it,
** or negative to leave the setting unchanged.
** The second parameter is a pointer to an integer into which is written 
** 0 or 1 to indicate whether output-for-triggers has been disabled - 0 if 
** it is not disabled, 1 if it is.  
** </dd>
**
** <dt>SQLITE_DBCONFIG_RESET_DATABASE</dt>
** <dd> Set the SQLITE_DBCONFIG_RESET_DATABASE flag and then run
** [VACUUM] in order to reset a database back to an empty database
** with no schema and no content. The following process works even for
** a badly corrupted database file:
** <ol>
** <li> sqlite3_db_config(db, SQLITE_DBCONFIG_RESET_DATABASE, 1, 0);
** <li> [sqlite3_exec](db, "[VACUUM]", 0, 0, 0);
** <li> sqlite3_db_config(db, SQLITE_DBCONFIG_RESET_DATABASE, 0, 0);
** </ol>
** Because resetting a database is destructive and irreversible, the
** process requires the use of this obscure API and multiple steps to help
** ensure that it does not happen by accident.
** </dd>
** </dl>
*/
#define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
#define SQLITE_DBCONFIG_LOOKASIDE             1001 /* void* int int */
#define SQLITE_DBCONFIG_ENABLE_FKEY           1002 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_TRIGGER        1003 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 /* int int* */
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE      1006 /* int int* */
#define SQLITE_DBCONFIG_ENABLE_QPSG           1007 /* int int* */
#define SQLITE_DBCONFIG_TRIGGER_EQP           1008 /* int int* */
#define SQLITE_DBCONFIG_RESET_DATABASE        1009 /* int int* */
#define SQLITE_DBCONFIG_MAX                   1009 /* Largest DBCONFIG */

/*
** CAPI3REF: Enable Or Disable Extended Result Codes
** METHOD: sqlite3
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
................................................................................
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
** made NULL or made to point to memory obtained from [sqlite3_malloc]
** or else the use of the [data_store_directory pragma] should be avoided.
*/
SQLITE_API SQLITE_EXTERN char *sqlite3_data_directory;

/*
** CAPI3REF: Win32 Specific Interface
**
** These interfaces are available only on Windows.  The
** [sqlite3_win32_set_directory] interface is used to set the value associated
** with the [sqlite3_temp_directory] or [sqlite3_data_directory] variable, to
** zValue, depending on the value of the type parameter.  The zValue parameter
** should be NULL to cause the previous value to be freed via [sqlite3_free];
** a non-NULL value will be copied into memory obtained from [sqlite3_malloc]
** prior to being used.  The [sqlite3_win32_set_directory] interface returns
** [SQLITE_OK] to indicate success, [SQLITE_ERROR] if the type is unsupported,
** or [SQLITE_NOMEM] if memory could not be allocated.  The value of the
** [sqlite3_data_directory] variable is intended to act as a replacement for
** the current directory on the sub-platforms of Win32 where that concept is
** not present, e.g. WinRT and UWP.  The [sqlite3_win32_set_directory8] and
** [sqlite3_win32_set_directory16] interfaces behave exactly the same as the
** sqlite3_win32_set_directory interface except the string parameter must be
** UTF-8 or UTF-16, respectively.
*/
SQLITE_API int sqlite3_win32_set_directory(
  unsigned long type, /* Identifier for directory being set or reset */
  void *zValue        /* New value for directory being set or reset */
);
SQLITE_API int sqlite3_win32_set_directory8(unsigned long type, const char *zValue);
SQLITE_API int sqlite3_win32_set_directory16(unsigned long type, const void *zValue);

/*
** CAPI3REF: Win32 Directory Types
**
** These macros are only available on Windows.  They define the allowed values
** for the type argument to the [sqlite3_win32_set_directory] interface.
*/
#define SQLITE_WIN32_DATA_DIRECTORY_TYPE  1
#define SQLITE_WIN32_TEMP_DIRECTORY_TYPE  2

/*
** CAPI3REF: Test For Auto-Commit Mode
** KEYWORDS: {autocommit mode}
** METHOD: sqlite3
**
** ^The sqlite3_get_autocommit() interface returns non-zero or
** zero if the given database connection is or is not in autocommit mode,
................................................................................
** parsing ambiguity.  For example, the statement
** "CREATE TABLE BEGIN(REPLACE,PRAGMA,END);" is accepted by SQLite, and
** creates a new table named "BEGIN" with three columns named
** "REPLACE", "PRAGMA", and "END".  Nevertheless, best practice is to avoid
** using keywords as identifiers.  Common techniques used to avoid keyword
** name collisions include:
** <ul>
** <li> Put all identifier names inside double-quotes.  This is the official
**      SQL way to escape identifier names.
** <li> Put identifier names inside &#91;...&#93;.  This is not standard SQL,
**      but it is what SQL Server does and so lots of programmers use this
**      technique.
** <li> Begin every identifier with the letter "Z" as no SQL keywords start
**      with "Z".
** <li> Include a digit somewhere in every identifier name.
................................................................................
** SQLite is compiled with the [-DSQLITE_OMIT_VACUUM] option.  Also,
** new keywords may be added to future releases of SQLite.
*/
SQLITE_API int sqlite3_keyword_count(void);
SQLITE_API int sqlite3_keyword_name(int,const char**,int*);
SQLITE_API int sqlite3_keyword_check(const char*,int);

/*
** CAPI3REF: Dynamic String Object
** KEYWORDS: {dynamic string}
**
** An instance of the sqlite3_str object contains a dynamically-sized
** string under construction.
**
** The lifecycle of an sqlite3_str object is as follows:
** <ol>
** <li> ^The sqlite3_str object is created using [sqlite3_str_new()].
** <li> ^Text is appended to the sqlite3_str object using various
** methods, such as [sqlite3_str_appendf()].
** <li> ^The sqlite3_str object is destroyed and the string it created
** is returned using the [sqlite3_str_finish()] interface.
** </ol>
*/
typedef struct sqlite3_str sqlite3_str;

/*
** CAPI3REF: Create A New Dynamic String Object
** CONSTRUCTOR: sqlite3_str
**
** ^The [sqlite3_str_new(D)] interface allocates and initializes
** a new [sqlite3_str]
** object.  ^The [sqlite3_str_new()] interface returns NULL on an out-of-memory
** condition.  To avoid memory leaks, the object returned by
** [sqlite3_str_new()] must be freed by a subsequent call to 
** [sqlite3_str_finish(X)].
**
** The D parameter to [sqlite3_str_new(D)] may be NULL.  If the
** D parameter in [sqlite3_str_new(D)] is not NULL, then the maximum
** length of the string contained in the [sqlite3_str] object will be
** the value set for [sqlite3_limit](D,[SQLITE_LIMIT_LENGTH]) instead
** of [SQLITE_MAX_LENGTH].
*/
SQLITE_API sqlite3_str *sqlite3_str_new(sqlite3*);

/*
** CAPI3REF: Finalize A Dynamic String
** DESTRUCTOR: sqlite3_str
**
** ^The [sqlite3_str_finish(X)] interface destroys the sqlite3_str object X
** and returns a pointer to a memory buffer obtained from [sqlite3_malloc64()]
** that contains the constructed string.  The calling application should
** pass the returned value to [sqlite3_free()] to avoid a memory leak.
** ^The [sqlite3_str_finish(X)] interface may return a NULL pointer if any
** errors were encountered during construction of the string.  ^The
** [sqlite3_str_finish(X)] interface will also return a NULL pointer if the
** string in [sqlite3_str] object X is zero bytes long.
*/
SQLITE_API char *sqlite3_str_finish(sqlite3_str*);

/*
** CAPI3REF: Add Content To A Dynamic String
** METHOD: sqlite3_str
**
** These interfaces add content to an sqlite3_str object previously obtained
** from [sqlite3_str_new()].
**
** ^The [sqlite3_str_appendf(X,F,...)] and 
** [sqlite3_str_vappendf(X,F,V)] interfaces uses the [built-in printf]
** functionality of SQLite to append formatted text onto the end of 
** [sqlite3_str] object X.
**
** ^The [sqlite3_str_append(X,S,N)] method appends exactly N bytes from string S
** onto the end of the [sqlite3_str] object X.  N must be non-negative.
** S must contain at least N non-zero bytes of content.  To append a
** zero-terminated string in its entirety, use the [sqlite3_str_appendall()]
** method instead.
**
** ^The [sqlite3_str_appendall(X,S)] method appends the complete content of
** zero-terminated string S onto the end of [sqlite3_str] object X.
**
** ^The [sqlite3_str_appendchar(X,N,C)] method appends N copies of the
** single-byte character C onto the end of [sqlite3_str] object X.
** ^This method can be used, for example, to add whitespace indentation.
**
** ^The [sqlite3_str_reset(X)] method resets the string under construction
** inside [sqlite3_str] object X back to zero bytes in length.  
**
** These methods do not return a result code.  ^If an error occurs, that fact
** is recorded in the [sqlite3_str] object and can be recovered by a
** subsequent call to [sqlite3_str_errcode(X)].
*/
SQLITE_API void sqlite3_str_appendf(sqlite3_str*, const char *zFormat, ...);
SQLITE_API void sqlite3_str_vappendf(sqlite3_str*, const char *zFormat, va_list);
SQLITE_API void sqlite3_str_append(sqlite3_str*, const char *zIn, int N);
SQLITE_API void sqlite3_str_appendall(sqlite3_str*, const char *zIn);
SQLITE_API void sqlite3_str_appendchar(sqlite3_str*, int N, char C);
SQLITE_API void sqlite3_str_reset(sqlite3_str*);

/*
** CAPI3REF: Status Of A Dynamic String
** METHOD: sqlite3_str
**
** These interfaces return the current status of an [sqlite3_str] object.
**
** ^If any prior errors have occurred while constructing the dynamic string
** in sqlite3_str X, then the [sqlite3_str_errcode(X)] method will return
** an appropriate error code.  ^The [sqlite3_str_errcode(X)] method returns
** [SQLITE_NOMEM] following any out-of-memory error, or
** [SQLITE_TOOBIG] if the size of the dynamic string exceeds
** [SQLITE_MAX_LENGTH], or [SQLITE_OK] if there have been no errors.
**
** ^The [sqlite3_str_length(X)] method returns the current length, in bytes,
** of the dynamic string under construction in [sqlite3_str] object X.
** ^The length returned by [sqlite3_str_length(X)] does not include the
** zero-termination byte.
**
** ^The [sqlite3_str_value(X)] method returns a pointer to the current
** content of the dynamic string under construction in X.  The value
** returned by [sqlite3_str_value(X)] is managed by the sqlite3_str object X
** and might be freed or altered by any subsequent method on the same
** [sqlite3_str] object.  Applications must not used the pointer returned
** [sqlite3_str_value(X)] after any subsequent method call on the same
** object.  ^Applications may change the content of the string returned
** by [sqlite3_str_value(X)] as long as they do not write into any bytes
** outside the range of 0 to [sqlite3_str_length(X)] and do not read or
** write any byte after any subsequent sqlite3_str method call.
*/
SQLITE_API int sqlite3_str_errcode(sqlite3_str*);
SQLITE_API int sqlite3_str_length(sqlite3_str*);
SQLITE_API char *sqlite3_str_value(sqlite3_str*);

/*
** CAPI3REF: SQLite Runtime Status
**
** ^These interfaces are used to retrieve runtime status information
** about the performance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes

Changes to src/timeline.c.

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  const char *zSearch = P("s");      /* Search string */
  const char *zUses = P("uf");       /* Only show check-ins hold this file */
  const char *zYearMonth = P("ym");  /* Show check-ins for the given YYYY-MM */
  const char *zYearWeek = P("yw");   /* Check-ins for YYYY-WW (week-of-year) */
  char *zYearWeekStart = 0;          /* YYYY-MM-DD for start of YYYY-WW */
  const char *zDay = P("ymd");       /* Check-ins for the day YYYY-MM-DD */
  const char *zNDays = P("days");    /* Show events over the previous N days */
  int nDays;                         /* Numeric value for zNDays */
  const char *zChng = P("chng");     /* List of GLOBs for files that changed */
  int useDividers = P("nd")==0;      /* Show dividers if "nd" is missing */
  int renameOnly = P("namechng")!=0; /* Show only check-ins that rename files */
  int forkOnly = PB("forks");        /* Show only forks and their children */
  int bisectOnly = PB("bisect");     /* Show the check-ins of the bisect */
  int tmFlags = 0;                   /* Timeline flags */
  const char *zThisTag = 0;          /* Suppress links to this tag */







|







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  const char *zSearch = P("s");      /* Search string */
  const char *zUses = P("uf");       /* Only show check-ins hold this file */
  const char *zYearMonth = P("ym");  /* Show check-ins for the given YYYY-MM */
  const char *zYearWeek = P("yw");   /* Check-ins for YYYY-WW (week-of-year) */
  char *zYearWeekStart = 0;          /* YYYY-MM-DD for start of YYYY-WW */
  const char *zDay = P("ymd");       /* Check-ins for the day YYYY-MM-DD */
  const char *zNDays = P("days");    /* Show events over the previous N days */
  int nDays = 0;                     /* Numeric value for zNDays */
  const char *zChng = P("chng");     /* List of GLOBs for files that changed */
  int useDividers = P("nd")==0;      /* Show dividers if "nd" is missing */
  int renameOnly = P("namechng")!=0; /* Show only check-ins that rename files */
  int forkOnly = PB("forks");        /* Show only forks and their children */
  int bisectOnly = PB("bisect");     /* Show the check-ins of the bisect */
  int tmFlags = 0;                   /* Timeline flags */
  const char *zThisTag = 0;          /* Suppress links to this tag */