Rename sqlite3ExprCodeAtInit() to sqlite3ExprCodeRunJustOnce().

Other changes to make the new code cleaner. Test cases added. FossilOrigin-Name: d7f18489978fdbbe3ab317485518cac91a75416ccef55898301afdd76d3b415b
Do not factor out constant functions into the initialization section at the
2020-03-11 19:41:49 +00:00 · 2020-03-11 17:58:27 +00:00 · 2020-03-11 02:04:15 +00:00 · 2020-03-10 19:24:38 +00:00 · 2020-03-10 18:55:41 +00:00 · 2020-03-10 13:35:04 +00:00
102 changed files with 2082 additions and 1216 deletions
@@ -1 +1 @@
-3.31.1
+3.32.0
@@ -19,7 +19,7 @@ dnl	to configure the system for the local environment.
 # so you can encode the package version directly into the source files.
 #-----------------------------------------------------------------------

-AC_INIT([sqlite], [3.31.1])
+AC_INIT([sqlite], [3.32.0])

 #--------------------------------------------------------------------
 # Call TEA_INIT as the first TEA_ macro to set up initial vars.
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for sqlite 3.31.1.
+# Generated by GNU Autoconf 2.69 for sqlite 3.32.0.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -726,8 +726,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='sqlite'
 PACKAGE_TARNAME='sqlite'
-PACKAGE_VERSION='3.31.1'
-PACKAGE_STRING='sqlite 3.31.1'
+PACKAGE_VERSION='3.32.0'
+PACKAGE_STRING='sqlite 3.32.0'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''

@@ -1467,7 +1467,7 @@ if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
-\`configure' configures sqlite 3.31.1 to adapt to many kinds of systems.
+\`configure' configures sqlite 3.32.0 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@@ -1532,7 +1532,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of sqlite 3.31.1:";;
+     short | recursive ) echo "Configuration of sqlite 3.32.0:";;
   esac
  cat <<\_ACEOF

@@ -1659,7 +1659,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-sqlite configure 3.31.1
+sqlite configure 3.32.0
 generated by GNU Autoconf 2.69

 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2078,7 +2078,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.

-It was created by sqlite $as_me 3.31.1, which was
+It was created by sqlite $as_me 3.32.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was

  $ $0 $@
@@ -12243,7 +12243,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by sqlite $as_me 3.31.1, which was
+This file was extended by sqlite $as_me 3.32.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
@@ -12309,7 +12309,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-sqlite config.status 3.31.1
+sqlite config.status 3.32.0
 configured by $0, generated by GNU Autoconf 2.69,
  with options \\"\$ac_cs_config\\"

@@ -123,7 +123,7 @@ Suppress generation of the report file.
 <li><b>-r</b>
 Do not sort or renumber the parser states as part of optimization.
 <li><b>-s</b>
-Show parser statistics before existing.
+Show parser statistics before exiting.
 <li><b>-T<i>file</i></b>
 Use <i>file</i> as the template for the generated C-code parser implementation.
 <li><b>-x</b>
@@ -488,7 +488,7 @@ is an error.</p>
 The precedence of a grammar rule is equal to the precedence of the
 left-most terminal symbol in the rule for which a precedence is
 defined.  This is normally what you want, but in those cases where
-you want to precedence of a grammar rule to be something different,
+you want the precedence of a grammar rule to be something different,
 you can specify an alternative precedence symbol by putting the
 symbol in square braces after the period at the end of the rule and
 before any C-code.  For example:</p>
@@ -689,7 +689,7 @@ on Parse().
 <a name='extractx'></a>
 <h4>The <tt>%extra_context</tt> directive</h4>

-The <tt>%extra_context</tt> directive instructs Lemon to add a 2th parameter
+The <tt>%extra_context</tt> directive instructs Lemon to add a 2nd parameter
 to the parameter list of the ParseAlloc() and ParseInif() functions.  Lemon
 doesn't do anything itself with these extra argument, but it does
 store the value make it available to C-code action routines, destructors,
@@ -699,9 +699,9 @@ and so forth.  For example, if the grammar file contains:</p>
    %extra_context { MyStruct *pAbc }
 </pre></p>

-<p>Then the ParseAlloc() and ParseInit() functions will have an 2th parameter
+<p>Then the ParseAlloc() and ParseInit() functions will have an 2nd parameter
 of type "MyStruct*" and all action routines will have access to
-a variable named "pAbc" that is the value of that 2th parameter.</p>
+a variable named "pAbc" that is the value of that 2nd parameter.</p>

 <p>The <tt>%extra_argument</tt> directive works the same except that it
 is passed in on the Parse() routine instead of on ParseAlloc()/ParseInit().
@@ -996,7 +996,7 @@ on the parser's stack associated with terminal and non-terminal
 symbols.  The values of all terminal symbols must be of the same
 type.  This turns out to be the same data type as the 3rd parameter
 to the Parse() function generated by Lemon.  Typically, you will
-make the value of a terminal symbol by a pointer to some kind of
+make the value of a terminal symbol be a pointer to some kind of
 token structure.  Like this:</p>

 <p><pre>
@@ -1884,6 +1884,7 @@ static int fts3ScanInteriorNode(
  i64 nAlloc = 0;                 /* Size of allocated buffer */
  int isFirstTerm = 1;            /* True when processing first term on page */
  sqlite3_int64 iChild;           /* Block id of child node to descend to */
+  int nBuffer = 0;                /* Total term size */

  /* Skip over the 'height' varint that occurs at the start of every 
  ** interior node. Then load the blockid of the left-child of the b-tree
@@ -1908,12 +1909,15 @@ static int fts3ScanInteriorNode(
    int cmp;                      /* memcmp() result */
    int nSuffix;                  /* Size of term suffix */
    int nPrefix = 0;              /* Size of term prefix */
-    int nBuffer;                  /* Total term size */
  
    /* Load the next term on the node into zBuffer. Use realloc() to expand
    ** the size of zBuffer if required.  */
    if( !isFirstTerm ){
      zCsr += fts3GetVarint32(zCsr, &nPrefix);
+      if( nPrefix>nBuffer ){
+        rc = FTS_CORRUPT_VTAB;
+        goto finish_scan;
+      }
    }
    isFirstTerm = 0;
    zCsr += fts3GetVarint32(zCsr, &nSuffix);
@@ -350,7 +350,7 @@ static int fts3tokFilterMethod(
    if( pCsr->zInput==0 ){
      rc = SQLITE_NOMEM;
    }else{
-      memcpy(pCsr->zInput, zByte, nByte);
+      if( nByte>0 ) memcpy(pCsr->zInput, zByte, nByte);
      pCsr->zInput[nByte] = 0;
      rc = pTab->pMod->xOpen(pTab->pTok, pCsr->zInput, nByte, &pCsr->pCsr);
      if( rc==SQLITE_OK ){
@@ -2502,7 +2502,7 @@ static int fts3SegmentIsMaxLevel(Fts3Table *p, i64 iAbsLevel, int *pbMax){
  if( rc!=SQLITE_OK ) return rc;
  sqlite3_bind_int64(pStmt, 1, iAbsLevel+1);
  sqlite3_bind_int64(pStmt, 2, 
-      ((iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL
+      (((u64)iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL
  );

  *pbMax = 0;
@@ -50,6 +50,7 @@ struct Fts5VocabTable {
  sqlite3 *db;                    /* Database handle */
  Fts5Global *pGlobal;            /* FTS5 global object for this database */
  int eType;                      /* FTS5_VOCAB_COL, ROW or INSTANCE */
+  unsigned bBusy;                 /* True if busy */
 };

 struct Fts5VocabCursor {
@@ -332,6 +333,12 @@ static int fts5VocabOpenMethod(
  sqlite3_stmt *pStmt = 0;
  char *zSql = 0;

+  if( pTab->bBusy ){
+    pVTab->zErrMsg = sqlite3_mprintf(
+       "recursive definition for %s.%s", pTab->zFts5Db, pTab->zFts5Tbl
+    );
+    return SQLITE_ERROR;
+  }
  zSql = sqlite3Fts5Mprintf(&rc,
      "SELECT t.%Q FROM %Q.%Q AS t WHERE t.%Q MATCH '*id'",
      pTab->zFts5Tbl, pTab->zFts5Db, pTab->zFts5Tbl, pTab->zFts5Tbl
@@ -343,10 +350,12 @@ static int fts5VocabOpenMethod(
  assert( rc==SQLITE_OK || pStmt==0 );
  if( rc==SQLITE_ERROR ) rc = SQLITE_OK;

+  pTab->bBusy = 1;
  if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){
    i64 iId = sqlite3_column_int64(pStmt, 0);
    pFts5 = sqlite3Fts5TableFromCsrid(pTab->pGlobal, iId);
  }
+  pTab->bBusy = 0;

  if( rc==SQLITE_OK ){
    if( pFts5==0 ){
@@ -500,14 +500,18 @@ do_execsql_test 15.0 {
  INSERT INTO t1 VALUES('c', 'd');
 }

+if {$tcl_platform(byteOrder)=="littleEndian"} {
+  set res {X'02000000'}
+} else {
+  set res {X'00000002'}
+}
 do_execsql_test 15.1 {
  SELECT quote(matchinfo(t1, 'n')) FROM t1 LIMIT 1;
-} {X'02000000'}
-
+} $res
 do_execsql_test 15.2 {
  DELETE FROM t1_content WHERE rowid=1;
  SELECT quote(matchinfo(t1, 'n')) FROM t1 LIMIT 1;
-} {X'02000000'}
+} $res

 fts5_aux_test_functions db
 do_execsql_test 15.3 {
@@ -517,4 +521,3 @@ do_execsql_test 15.3 {
 }

 finish_test
-
@@ -542,5 +542,16 @@ do_execsql_test 10.7.3 {
  SELECT * FROM t2 WHERE term=?;
 }

-finish_test
+# 2020-02-16  Detect recursively define fts5vocab() tables.
+# Error found by dbsqlfuzz.
+#
+reset_db
+do_execsql_test 11.100 {
+  CREATE VIRTUAL TABLE t3 USING fts5vocab(rowid , 'col');
+  CREATE VIRTUAL TABLE rowid USING fts5vocab(rowid , 'instance');
+} {}
+do_catchsql_test 11.110 {
+  SELECT rowid+1,rowid, * FROM t3 WHERE null>rowid ;
+} {1 {SQL logic error}}

+finish_test
@@ -23,7 +23,7 @@
 **    rootpage INT,                -- The root page of the btree
 **    sql TEXT,                    -- SQL for this btree - from sqlite_master
 **    hasRowid BOOLEAN,            -- True if the btree has a rowid
-**    nEntry INT,                  -- Estimated number of enteries
+**    nEntry INT,                  -- Estimated number of entries
 **    nPage INT,                   -- Estimated number of pages
 **    depth INT,                   -- Depth of the btree
 **    szPage INT,                  -- Size of each page in bytes
@@ -381,8 +381,9 @@ int sqlite3_sha_init(
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
  (void)pzErrMsg;  /* Unused parameter */
-  rc = sqlite3_create_function(db, "sha1", 1, SQLITE_UTF8|SQLITE_INNOCUOUS, 0,
-                               sha1Func, 0, 0);
+  rc = sqlite3_create_function(db, "sha1", 1, 
+                       SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC,
+                               0, sha1Func, 0, 0);
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "sha1_query", 1, 
                                 SQLITE_UTF8|SQLITE_DIRECTONLY, 0,
@@ -3746,8 +3746,10 @@ static int rtreeInit(
    }else if( pRtree->nAux>0 ){
      break;
    }else{
+      static const char *azFormat[] = {",%.*s REAL", ",%.*s INT"};
      pRtree->nDim2++;
-      sqlite3_str_appendf(pSql, ",%.*s NUM", rtreeTokenLength(zArg), zArg);
+      sqlite3_str_appendf(pSql, azFormat[eCoordType],
+                          rtreeTokenLength(zArg), zArg);
    }
  }
  sqlite3_str_appendf(pSql, ");");
@@ -716,6 +716,18 @@ do_execsql_test 18.0 {
  SELECT rt0.c1 > '-1' FROM rt0;
 } {9 1}

-
 expand_all_sql db
+
+# 2020-02-28 ticket e63b4d1a65546532
+reset_db
+do_execsql_test 19.0 {
+  CREATE VIRTUAL TABLE rt0 USING rtree(a,b,c);
+  INSERT INTO rt0(a,b,c) VALUES(0,0.0,0.0);
+  CREATE VIEW v0(x) AS SELECT DISTINCT rt0.b FROM rt0;
+  SELECT v0.x FROM v0, rt0;
+} {0.0}
+do_execsql_test 19.1 {
+  SELECT v0.x FROM v0, rt0 WHERE v0.x = rt0.b;
+} {0.0}
+
 finish_test
@@ -34,5 +34,51 @@ do_test 1.0 {
  compare_db db db2
 } {}

+#------------------------------------------------------------------------
+db2 close
+reset_db
+
+do_execsql_test 2.0 {
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c);
+  INSERT INTO main.t1 VALUES(1, 2, 3), (4, 5, 6), (7, 8, 9);
+}
+
+do_test 2.1 {
+  sqlite3session S db main
+  S attach *
+  db eval {
+    BEGIN;
+      INSERT INTO t1 VALUES(10, 11, 12);
+      DELETE FROM t1 WHERE a=1;
+      UPDATE t1 SET b='five', c='six' WHERE a=4;
+  }
+
+  set C [S changeset]
+  db eval ROLLBACK
+  S delete
+  set {} {}
+} {}
+
+do_execsql_test 2.2 {
+  CREATE TEMP TABLE t1(a INTEGER PRIMARY KEY, b, c);
+  INSERT INTO temp.t1 VALUES(1, 2, 3), (4, 5, 6), (7, 8, 9);
+}
+
+set ::conflict [list]
+proc xConflict {args} { lappend ::conflict $args ; return "" }
+do_test 2.3 {
+  sqlite3changeset_apply db $C xConflict
+  set ::conflict
+} {}
+do_execsql_test 2.4 {
+  SELECT * FROM main.t1;
+  SELECT '****';
+  SELECT * FROM temp.t1;
+} {
+  4 five six 7 8 9 10 11 12
+  ****
+  1 2 3 4 5 6 7 8 9
+}
+

 finish_test
@@ -3513,7 +3513,7 @@ static int sessionDeleteRow(
  SessionBuffer buf = {0, 0, 0};
  int nPk = 0;

-  sessionAppendStr(&buf, "DELETE FROM ", &rc);
+  sessionAppendStr(&buf, "DELETE FROM main.", &rc);
  sessionAppendIdent(&buf, zTab, &rc);
  sessionAppendStr(&buf, " WHERE ", &rc);

@@ -3596,7 +3596,7 @@ static int sessionUpdateRow(
  SessionBuffer buf = {0, 0, 0};

  /* Append "UPDATE tbl SET " */
-  sessionAppendStr(&buf, "UPDATE ", &rc);
+  sessionAppendStr(&buf, "UPDATE main.", &rc);
  sessionAppendIdent(&buf, zTab, &rc);
  sessionAppendStr(&buf, " SET ", &rc);

@@ -1,5 +1,5 @@
-C Version\s3.31.1
-D 2020-01-27T19:55:54.490
+C Rename\ssqlite3ExprCodeAtInit()\sto\ssqlite3ExprCodeRunJustOnce().\nOther\schanges\sto\smake\sthe\snew\scode\scleaner.\s\sTest\scases\sadded.
+D 2020-03-11T19:41:49.390
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -7,7 +7,7 @@ F Makefile.in 9dfc7936f675785309b74d09202bb656732325e65df889e5aaa18cc8932e5b0c
 F Makefile.linux-gcc f609543700659711fbd230eced1f01353117621dccae7b9fb70daa64236c5241
 F Makefile.msc fab23c6b10cb6f06a7e9c407fc2e35cb184a6d653f1b793bda87fcee2eafa4f6
 F README.md 1514a365ffca3c138e00c5cc839906108a01011a6b082bad19b09781e3aa498a
-F VERSION c4deaf1a08bf7fa765deb3dbf70f38674f2311ad65fda971a726bfda1d9d5157
+F VERSION 980d78a2ce04a1fd0ebefbaabd665f7f9186563820629ee29c6e350e96f19b52
 F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
 F art/sqlite370.eps aa97a671332b432a54e1d74ff5e8775be34200c2
 F art/sqlite370.ico af56c1d00fee7cd4753e8631ed60703ed0fc6e90
@@ -22,7 +22,7 @@ F autoconf/configure.ac 3cd933b959fe514eebd1ca1717dfddbf2c9b825b6bc2c5f744deaf5d
 F autoconf/tea/Makefile.in b438a7020446c8a8156e8d97c8914a04833da6fd
 F autoconf/tea/README 3e9a3c060f29a44344ab50aec506f4db903fb873
 F autoconf/tea/aclocal.m4 52c47aac44ce0ddb1f918b6993e8beb8eee88f43
-F autoconf/tea/configure.ac 5884bade5d508561364fae18d99f73b7cc19551819856d8c04cbc90213c05b8e
+F autoconf/tea/configure.ac ea61e07340d97e4a79a081f0b8977198a6073edd060738dbb3ae5cb8d5e96f1c
 F autoconf/tea/doc/sqlite3.n e1fe45d4f5286ee3d0ccc877aca2a0def488e9bb
 F autoconf/tea/license.terms 13bd403c9610fd2b76ece0ab50c4c5eda933d523
 F autoconf/tea/pkgIndex.tcl.in 3ef61715cf1c7bdcff56947ffadb26bc991ca39d
@@ -34,11 +34,11 @@ F autoconf/tea/win/rules.vc c511f222b80064096b705dbeb97060ee1d6b6d63
 F config.guess 883205ddf25b46f10c181818bf42c09da9888884af96f79e1719264345053bd6
 F config.h.in 6376abec766e9a0785178b1823b5a587e9f1ccbc
 F config.sub c2d0260f17f3e4bc0b6808fccf1b291cb5e9126c14fc5890efc77b9fd0175559
-F configure 59ff1469383901df09bda4ecd45deca09dbda63a91ce616669c1435b6b6b93e0 x
+F configure 4bbb5f13998f2faf929b9ae708aea9fbcb08a46cb6dd3150e36c3f09c0a05a75 x
 F configure.ac 798a24cee2879325ca5b688a618199eb32cc77ed8136edbaa43d9137b470d54e
 F contrib/sqlitecon.tcl 210a913ad63f9f991070821e599d600bd913e0ad
 F doc/F2FS.txt c1d4a0ae9711cfe0e1d8b019d154f1c29e0d3abfe820787ba1e9ed7691160fcd
-F doc/lemon.html 24956ab2995e55fe171e55bdd04f22b553957dc8bb43501dbb9311e30187e0d3
+F doc/lemon.html 857495c0ce060a4e2f2ad7111135ad7e28041a32c10612279ab398eddf678f58
 F doc/pager-invariants.txt 27fed9a70ddad2088750c4a2b493b63853da2710
 F doc/trusted-schema.md 33625008620e879c7bcfbbfa079587612c434fa094d338b08242288d358c3e8a
 F doc/vfs-shm.txt e101f27ea02a8387ce46a05be2b1a902a021d37a
@@ -82,7 +82,7 @@ F ext/fts3/README.content fdc666a70d5257a64fee209f97cf89e0e6e32b51
 F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
 F ext/fts3/README.tokenizers b92bdeb8b46503f0dd301d364efc5ef59ef9fa8e2758b8e742f39fa93a2e422d
 F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
-F ext/fts3/fts3.c 52c09f459364732b5df73eff0373f991fd6af8f0f60fcdbb4b649205e88a7568
+F ext/fts3/fts3.c 2a9dd452003a143248e68449302da80dd0c43df72195b56577e3562e43c408a0
 F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
 F ext/fts3/fts3Int.h f091030b976045e7df91af2337935952b477cdbd9f48058c44c965684484cb50
 F ext/fts3/fts3_aux.c 96708c8b3a7d9b8ca1b68ea2b7e503e283f20e95f145becadedfad096dbd0f34
@@ -94,13 +94,13 @@ F ext/fts3/fts3_porter.c 3565faf04b626cddf85f03825e86056a4562c009
 F ext/fts3/fts3_snippet.c 052b35ad746349ffb53820379bacdb23ff3ac60d3cc13d986e56d42822ef5a9a
 F ext/fts3/fts3_term.c f45a1e7c6ef464abb1231245d123dae12266b69e05cc56e14045b76591ae92d1
 F ext/fts3/fts3_test.c 73b16e229e517c1b1f0fb8e1046182a4e5dbc8dbe6eea8a5d4353fcce7dbbf39
-F ext/fts3/fts3_tokenize_vtab.c 1de9a61acfa2a0445ed989310c31839c57f6b6086dd9d5c97177ae734a17fd8b
+F ext/fts3/fts3_tokenize_vtab.c cb792f59212f7799bf2891c7d4579bbf568f124ce8fbb0a9902aa5bd577e8b75
 F ext/fts3/fts3_tokenizer.c 6d8fc150c48238955d5182bf661498db0dd473c8a2a80e00c16994a646fa96e7
 F ext/fts3/fts3_tokenizer.h 64c6ef6c5272c51ebe60fc607a896e84288fcbc3
 F ext/fts3/fts3_tokenizer1.c 5c98225a53705e5ee34824087478cf477bdb7004
 F ext/fts3/fts3_unicode.c 4b9af6151c29b35ed09574937083cece7c31e911f69615e168a39677569b684d
 F ext/fts3/fts3_unicode2.c 416eb7e1e81142703520d284b768ca2751d40e31fa912cae24ba74860532bf0f
-F ext/fts3/fts3_write.c 6f9dd5d774003ea81b8b32daa7d0819f9aaf01bf2b5f33498a69aab096094ed3
+F ext/fts3/fts3_write.c ddf34315b6c3dce79a28d966981cc76919b18f645d82c6132133a7c65b8ed283
 F ext/fts3/fts3speed.tcl b54caf6a18d38174f1a6e84219950d85e98bb1e9
 F ext/fts3/mkfts3amal.tcl 252ecb7fe6467854f2aa237bf2c390b74e71f100
 F ext/fts3/tool/fts3cov.sh c331d006359456cf6f8f953e37f2b9c7d568f3863f00bb5f7eb87fea4ac01b73
@@ -126,7 +126,7 @@ F ext/fts5/fts5_test_tok.c f96c6e193c466711d6d7828d5f190407fe7ab897062d371426dd3
 F ext/fts5/fts5_tokenize.c 2e508c6a3bd8ee56c48e98a38052e1a650e49b32a484cce9b189984114bc3b88
 F ext/fts5/fts5_unicode2.c 8bd0cd07396b74c1a05590e4070d635bccfc849812c305619f109e6c0485e250
 F ext/fts5/fts5_varint.c e64d2113f6e1bfee0032972cffc1207b77af63319746951bf1d09885d1dadf80
-F ext/fts5/fts5_vocab.c c3f12188570abb423303cd193b16dd19ba54e21c2e930e9b748d743de3b385f5
+F ext/fts5/fts5_vocab.c 7a071833064dc8bca236c3c323e56aac36f583aa2c46ce916d52e31ce87462c9
 F ext/fts5/fts5parse.y eb526940f892ade5693f22ffd6c4f2702543a9059942772526eac1fde256bb05
 F ext/fts5/mkportersteps.tcl 5acf962d2e0074f701620bb5308155fa1e4a63ba
 F ext/fts5/test/fts5_common.tcl b01c584144b5064f30e6c648145a2dd6bc440841
@@ -187,7 +187,7 @@ F ext/fts5/test/fts5integrity.test 8ffabcd91b058d812aba3e3e0a06f76ce165ba402a18c
 F ext/fts5/test/fts5interrupt.test 09613247b273a99889808ef852898177e671406fe71fdde7ea00e78ea283d227
 F ext/fts5/test/fts5lastrowid.test be98fe3e03235296585b72daad7aed5717ba0062bae5e5c18dd6e04e194c6b28
 F ext/fts5/test/fts5leftjoin.test c0b4cafb9661379e576dc4405c0891d8fcc2782680740513c4d1fc114b43d4ad
-F ext/fts5/test/fts5matchinfo.test 50d86da66ec5b27603dcd90ba0227f5d9deb10351cbc52974a88e24f6fc9b076
+F ext/fts5/test/fts5matchinfo.test 10c9a6f7fe61fb132299c4183c012770b10c4d5c2f2edb6df0b6607f683d737a
 F ext/fts5/test/fts5merge.test e92a8db28b45931e7a9c7b1bbd36101692759d00274df74d83fd29d25d53b3a6
 F ext/fts5/test/fts5merge2.test 3ebad1a59d6ad3fb66eff6523a09e95dc6367cbefb3cd73196801dea0425c8e2
 F ext/fts5/test/fts5misc.test 088ac5f0f5de1ad45b0f83197ab5263bcae8130156cdc901bff2375ff2b8af86
@@ -223,7 +223,7 @@ F ext/fts5/test/fts5unicode4.test 6463301d669f963c83988017aa354108be0b947d325aef
 F ext/fts5/test/fts5unindexed.test 9021af86a0fb9fc616f7a69a996db0116e7936d0db63892db6bafabbec21af4d
 F ext/fts5/test/fts5update.test b8affd796e45c94a4d19ad5c26606ea06065a0f162a9562d9f005b5a80ccf0bc
 F ext/fts5/test/fts5version.test c8f2cc105f0abf0224965f93e584633dee3e06c91478bc67e468f7cfdf97fd6a
-F ext/fts5/test/fts5vocab.test 648fb2fe86b55e08295e34504704718d92fba3e2cf3e1f5d72fa3682df4cd0f0
+F ext/fts5/test/fts5vocab.test 7ed80d9af1ddaaa1637da05e406327b5aac250848bc604c1c1cc667908b87760
 F ext/fts5/test/fts5vocab2.test e0fdc3a3095f6eda68ac9bf9a443ff929a124d46f00af19933604085712e9d47
 F ext/fts5/tool/fts5speed.tcl b0056f91a55b2d1a3684ec05729de92b042e2f85
 F ext/fts5/tool/fts5txt2db.tcl 526a9979c963f1c54fd50976a05a502e533a4c59
@@ -283,7 +283,7 @@ F ext/misc/amatch.c e3ad5532799cee9a97647f483f67f43b38796b84b5a8c60594fe782a4338
 F ext/misc/anycollseq.c 5ffdfde9829eeac52219136ad6aa7cd9a4edb3b15f4f2532de52f4a22525eddb
 F ext/misc/appendvfs.c 3777f22ec1057dc4e5fd89f2fbddcc7a29fbeef1ad038c736c54411bb1967af7
 F ext/misc/blobio.c a867c4c4617f6ec223a307ebfe0eabb45e0992f74dd47722b96f3e631c0edb2a
-F ext/misc/btreeinfo.c 4f0ebf278f46e68e6306c667917766cebc5550fd35d5de17847988e22892d4d2
+F ext/misc/btreeinfo.c 26004b7a6be320ec08fc20ca8d0f01fccb00a98cbe0f3197446794ff2a506aa3
 F ext/misc/carray.c 91e9a7f512fda934894bed30464552fffa7d3073b5be04189ae0bd0c59f26bfd
 F ext/misc/closure.c dbfd8543b2a017ae6b1a5843986b22ddf99ff126ec9634a2f4047cd14c85c243
 F ext/misc/completion.c a0efe03edfdc4f717c61e6c9b0bfe2708ff7878010dae3174980a68fdf76aabc
@@ -312,7 +312,7 @@ F ext/misc/remember.c add730f0f7e7436cd15ea3fd6a90fd83c3f706ab44169f7f048438b7d6
 F ext/misc/rot13.c 51ac5f51e9d5fd811db58a9c23c628ad5f333c173f1fc53c8491a3603d38556c
 F ext/misc/scrub.c db9fff56fed322ca587d73727c6021b11ae79ce3f31b389e1d82891d144f22ad
 F ext/misc/series.c 4057dda3579b38ff88b2d3b13b4dd92dbd9d6f90dac2b55c19b0a8ed87ee4959
-F ext/misc/sha1.c 1190aec0d9d886d9f5ffdf891142a626812327d11472c0cade3489db3b7b140a
+F ext/misc/sha1.c c8f2253c8792ffab9517695ea7d88c079f0395a5505eefef5c8198fe184ed5ac
 F ext/misc/shathree.c 135b7c145db4a09b1650c3e7aff9cb538763a9a361e834c015dd1aaf8d5c9a00
 F ext/misc/showauth.c 732578f0fe4ce42d577e1c86dc89dd14a006ab52
 F ext/misc/spellfix.c 94df9bbfa514a563c1484f684a2df3d128a2f7209a84ca3ca100c68a0163e29f
@@ -384,9 +384,9 @@ F ext/repair/test/checkindex01.test b530f141413b587c9eb78ff734de6bb79bc3515c3350
 F ext/repair/test/test.tcl 686d76d888dffd021f64260abf29a55c57b2cedfa7fc69150b42b1d6119aac3c
 F ext/rtree/README 6315c0d73ebf0ec40dedb5aa0e942bc8b54e3761
 F ext/rtree/geopoly.c cac70b5502742bd0ba8877a1329a74e86a379c78567546a2a18cf5f9c3787f73
-F ext/rtree/rtree.c 84b939a9a558edd0461bb976b98f60012e3e574b3b17a0f44533d6f2a9aa2f2e
+F ext/rtree/rtree.c 0ee39cc787b95aa03a012e09e6090b0fa452154fa812af9a379898560fd6c00f
 F ext/rtree/rtree.h 4a690463901cb5e6127cf05eb8e642f127012fd5003830dbc974eca5802d9412
-F ext/rtree/rtree1.test 4092a8bd2b5eafc4fafe4fe9024249c12b13e4bab23c2c3eaff57412fdf805fa
+F ext/rtree/rtree1.test 00792b030a4e188ff1b22e8530e8aa0452bb5dd81c2b18cb004afc7dc63e040e
 F ext/rtree/rtree2.test 9d9deddbb16fd0c30c36e6b4fdc3ee3132d765567f0f9432ee71e1303d32603d
 F ext/rtree/rtree3.test 4ee5d7df86040efe3d8d84f141f2962a7745452200a7cba1db06f86d97050499
 F ext/rtree/rtree4.test 304de65d484540111b896827e4261815e5dca4ce28eeecd58be648cd73452c4b
@@ -433,7 +433,7 @@ F ext/session/sessionD.test 4f91d0ca8afc4c3969c72c9f0b5ea9527e21de29039937d0d973
 F ext/session/sessionE.test b2010949c9d7415306f64e3c2072ddabc4b8250c98478d3c0c4d064bce83111d
 F ext/session/sessionF.test d37ed800881e742c208df443537bf29aa49fd56eac520d0f0c6df3e6320f3401
 F ext/session/sessionG.test 3828b944cd1285f4379340fd36f8b64c464fc84df6ff3ccbc95578fd87140b9c
-F ext/session/sessionH.test a417559f29a7e775950fc5fc82b3d01256a7cbe793ddf1180df234df823d56e2
+F ext/session/sessionH.test b17afdbd3b8f17e9bab91e235acf167cf35485db2ab2df0ea8893fbb914741a4
 F ext/session/session_common.tcl 29ec9910aca1e996ca1c8531b8cecabf96eb576aa53de65a8ff03d848b9a2a8b
 F ext/session/session_speed_test.c dcf0ef58d76b70c8fbd9eab3be77cf9deb8bc1638fed8be518b62d6cbdef88b3
 F ext/session/sessionat.test efe88965e74ff1bc2af9c310b28358c02d420c1fb2705cc7a28f0c1cc142c3ec
@@ -444,7 +444,7 @@ F ext/session/sessioninvert.test ae1a003a9ab1f8d64227dbb5c3a4c97e65b561b01e7b295
 F ext/session/sessionrebase.test ccfa716b23bd1d3b03217ee58cfd90c78d4b99f53e6a9a2f05e82363b9142810
 F ext/session/sessionstat1.test 218d351cf9fcd6648f125a26b607b140310160184723c2666091b54450a68fb5
 F ext/session/sessionwor.test 67b5ab91d4f93ce65ff1f58240ac5ddf73f8670facc1ffa49cef56293d52818d
-F ext/session/sqlite3session.c a4dfb372f270df93422b0dc7666fd46849e6979b62a152f11287c21eed4ac21b
+F ext/session/sqlite3session.c e25b345896fa3646ff8b6c4058b3d9e365dc7eab4afe80b110808681098551c8
 F ext/session/sqlite3session.h a2db5b72b938d12c727b4b4ec632254ca493670a9c0de597af3271a7f774fc57
 F ext/session/test_session.c 98797aba475a799376c9a42214f2d1debf2d0c3cb657d9c8bbf4f70bf3fb4aec
 F ext/userauth/sqlite3userauth.h 7f3ea8c4686db8e40b0a0e7a8e0b00fac13aa7a3
@@ -466,36 +466,36 @@ F sqlite.pc.in 42b7bf0d02e08b9e77734a47798d1a55a9e0716b
 F sqlite3.1 fc7ad8990fc8409983309bb80de8c811a7506786
 F sqlite3.pc.in 48fed132e7cb71ab676105d2a4dc77127d8c1f3a
 F src/alter.c f48a4423c8f198d7f1ae4940f74b606707d05384ac79fb219be8e3323af2a2de
-F src/analyze.c b3ceec3fc052df8a96ca8a8c858d455dc5029ba681b4be98bb5c5a9162cfa58c
-F src/attach.c df0ead9091042c68964856ecc08dba55d5403ad5f3ca865d9d396d71528c511a
+F src/analyze.c 831bb090988477a00d3b4c000746e1b0454dcc93b10b793e6ebe1c47f25d193a
+F src/attach.c fa5addce233a2bb2dfdefeee3b37000e154c47214d3269cab1bb331416e330db
 F src/auth.c a3d5bfdba83d25abed1013a8c7a5f204e2e29b0c25242a56bc02bb0c07bf1e06
-F src/backup.c f70077d40c08b7787bfe934e4d1da8030cb0cc57d46b345fba2294b7d1be23ab
+F src/backup.c 5e617c087f1c2d6005c2ec694ce80d6e16bc68d906e1b1c556d7c7c2228b636b
 F src/bitvec.c 17ea48eff8ba979f1f5b04cc484c7bb2be632f33
 F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
-F src/btree.c 7af5ff0f88ba856c2681f6eeb457590b24f787e994f18cbdb44c2de2d33f757e
+F src/btree.c 7271a120a66dfd12edcee942443fcd7b3860514a5621cb26a374781af1462117
 F src/btree.h 6111552f19ed7a40f029cf4b33badc6fef9880314fffd80a945f0b7f43ab7471
-F src/btreeInt.h 6794084fad08c9750b45145743c0e3e5c27c94dee89f26dd8df7073314934fd2
-F src/build.c 2394d2c853088106dfc1cf485d609f20e6421d7c84892b795824e454f78e50ad
-F src/callback.c c547d00963ae28100117b4fb1f0f32242109b5804374ee3bfe01138a54da7f76
+F src/btreeInt.h dee1a1d0c621524e006bb260bd6b66d5d1867da6fe38cba9ad7b6a9bb9c0c175
+F src/build.c 406645db37154920075d90a4ea3c47f33d5f5b6e0769010a54ea8247ee433c1a
+F src/callback.c d0b853dd413255d2e337b34545e54d888ea02f20da5ad0e63585b389624c4a6c
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
-F src/ctime.c 1b0724e66f95f33b160b1af85caaf9cceb325d22abf39bd24df4f54a73982251
+F src/ctime.c 6a77ec9e0eb87aea929e002c816298907e337094a7b556898ae2d1e6be209f90
 F src/date.c 6c408fdd2e9ddf6e8431aba76315a2d061bea2cec8fbb75e25d7c1ba08274712
 F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
 F src/dbstat.c 0f55297469d4244ab7df395849e1af98eb5e95816af7c661e7d2d8402dea23da
-F src/delete.c a5c59b9c0251cf7682bc52af0d64f09b1aefc6781a63592c8f1136f7b73c66e4
-F src/expr.c 003c59158b33d7f3b198122cb0d1e13c06517cc3932e56b42283eb0e96696d66
+F src/delete.c 11000121c4281c0bce4e41db29addfaea0038eaa127ece02557c9207bc3e541d
+F src/expr.c ed718ee2206166c9c2fc4fe89eadb1f369318aeb8645e06033566b387970fb9a
 F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
-F src/fkey.c 92a248ec0fa4ed8ab60c98d9b188ce173aaf218f32e7737ba77deb2a684f9847
+F src/fkey.c 4b575423b0a5d4898b1a7868ce985cf1a8ad91c741c9abbb108ff02536d20f41
 F src/func.c 108577cebe8a50c86d849a93b99493a54e348dd0b846f00d13b52ca973d5baf4
-F src/global.c 59601d885a0dbbfbd22ed2d030424a5e7f1b9809a17ca46686058bbc4a55e980
+F src/global.c 79a988b56b06ce2d08ebefe1d35da9aa25b3851faa47ea5233361c4827185a64
 F src/hash.c 8d7dda241d0ebdafb6ffdeda3149a412d7df75102cecfc1021c98d6219823b19
 F src/hash.h 9d56a9079d523b648774c1784b74b89bd93fac7b365210157482e4319a468f38
 F src/hwtime.h cb1d7e3e1ed94b7aa6fde95ae2c2daccc3df826be26fc9ed7fd90d1750ae6144
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
-F src/insert.c 2fe4d7f67078a68650f16e4efe73207899e21702e6b9d2e8ad1894c76dcad352
+F src/insert.c 8e4211d04eb460c0694d486c6ba1c068d468c6f653c3f237869a802ad82854de
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
-F src/loadext.c 8cd803f1747c03a50b32fe87ebfb5851998d0cdafefe02737daa95e0616b42bb
-F src/main.c ffaa1308ee8ad7cf70bddc9a9fe2d2d66799e534b12ec876562d26a33a30d745
+F src/loadext.c b179df50e6e8bb0c36c149e95d958d49bd8c6c7469e59c01b53d164360bc6c32
+F src/main.c b11eec03807a038b4075d310936dc33ce597078ab78c35dacdf5f05446ed53de
 F src/malloc.c eaa4dc9602ce28b077f7de2eb275db2be270c5cc56d7fec5466301bd9b80e2f5
 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
 F src/mem1.c c12a42539b1ba105e3707d0e628ad70e611040d8f5e38cf942cee30c867083de
@@ -505,7 +505,7 @@ F src/mem5.c 9bf955937b07f8c32541c8a9991f33ce3173d944
 F src/memdb.c 02a5fcec19b9d40dd449ca802dc1b2e8f93f255fbf2a886277a3c3800d8d35db
 F src/memjournal.c 7561c01c90958f3ba9bc6cb2d857123d932bdfa5539ea34427a0957b2e35154d
 F src/msvc.h 3a15918220367a8876be3fa4f2abe423a861491e84b864fb2b7426bf022a28f8
-F src/mutex.c bae36f8af32c22ad80bbf0ccebec63c252b6a2b86e4d3e42672ff287ebf4a604
+F src/mutex.c 5e3409715552348732e97b9194abe92fdfcd934cfb681df4ba0ab87ac6c18d25
 F src/mutex.h a7b2293c48db5f27007c3bdb21d438873637d12658f5a0bf8ad025bb96803c4a
 F src/mutex_noop.c 9d4309c075ba9cc7249e19412d3d62f7f94839c4
 F src/mutex_unix.c aaf9ebc3f89df28483c52208497a99a02cc3650011422fc9d4c57e4392f7fe58
@@ -515,33 +515,33 @@ F src/os.c 669cc3839cc35d20f81faf0be1ab6d4581cea35e9d8f3a9d48a98d6571f7c285
 F src/os.h 48388821692e87da174ea198bf96b1b2d9d83be5dfc908f673ee21fafbe0d432
 F src/os_common.h b2f4707a603e36811d9b1a13278bffd757857b85
 F src/os_setup.h 0dbaea40a7d36bf311613d31342e0b99e2536586
-F src/os_unix.c ad7640c04eed946052a3b12856362a773d0a717696707313037186df0e2b59f2
+F src/os_unix.c 238ad16109b4160d0fba2597ef71459995ab5e304b3d8bbe290a8d5d6d6000e0
 F src/os_win.c 035a813cbd17f355bdcad7ab894af214a9c13a1db8aeac902365350b98cd45a7
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
-F src/pager.c c0bca72aa3f7b1cf521a9f350fcf8e5975ebf98da7dbb03492be876b0f053781
-F src/pager.h 71fe1d5016ec54d0cc5d344cd474e563450b438c59f535e8c1ec8a13b1373f14
-F src/parse.y c8d2de64db469fd56e0fa24da46cd8ec8523eb98626567d2708df371b47fdc3f
+F src/pager.c a71ffd145f55e28cbdc1bdabb5e6bef063da428a6c0de3c3a36e9a0c41d4c8c0
+F src/pager.h 3b33619a90180e0874c7eca31d6f6ceb464d9322c6fb4e9a7bbb318c8a17bdb3
+F src/parse.y 8575183809cf30f8c9d1fbea65ca34d1de78b659792bc7c42681e01fc596b520
 F src/pcache.c 385ff064bca69789d199a98e2169445dc16e4291fa807babd61d4890c3b34177
 F src/pcache.h 4f87acd914cef5016fae3030343540d75f5b85a1877eed1a2a19b9f284248586
 F src/pcache1.c 6596e10baf3d8f84cc1585d226cf1ab26564a5f5caf85a15757a281ff977d51a
-F src/pragma.c 0d49d43b22d66397aa026db505457f6683d8a66cd0a4f9db2e6776156bda716c
-F src/pragma.h 9f86a3a3a0099e651189521c8ad03768df598974e7bbdc21c7f9bb6125592fbd
-F src/prepare.c 6049beb71385f017af6fc320d2c75a4e50b75e280c54232442b785fbb83df057
+F src/pragma.c 5fd004b89c77319008ddff6d65dcc83ccca9584d3048f4f66b108b5906a20dba
+F src/pragma.h 9473160d220416456b40f27323bb4b316d4e4e08ffbf8bf88c5f7045d49c38e5
+F src/prepare.c 8d4d6c8aa6afefc48027c54b41cdf134b4d6bc2fc4badbe483ad7fd9e1728a28
 F src/printf.c 9be6945837c839ba57837b4bc3af349eba630920fa5532aa518816defe42a7d4
 F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
-F src/resolve.c f0781c9e180028b279bc4ff079ad54f4727223d470c8d2343643fcaf79b67740
-F src/rowset.c d977b011993aaea002cab3e0bb2ce50cf346000dff94e944d547b989f4b1fe93
-F src/select.c 3f7aecf64b08b018b89e4fe16ea621cc9a0e3f3801e9e5638cfe1a6035fa1581
-F src/shell.c.in c2e20c43a44fb5588a6c27ce60589538fbf4794fd7686f5b2598eca22eaae1fa
-F src/sqlite.h.in 75d0304247a2154122d6d06f12219c1e29291d72304f0eeef4c1ec6b1409b443
+F src/resolve.c 38e3a5636f5bdc92e3683e4cafbba6418c0aa15e0d89ca5b28bd0b621dbb80bf
+F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
+F src/select.c c94eec317c8ba929bc228392eb3cac8124f2d0fbe3fc1bddecb44dfc7057bc78
+F src/shell.c.in f76590931c0cbbfef347f44f81ade6b335f80c46bc6e59b8b6114383a8df30e0
+F src/sqlite.h.in 802957feeb249ede54f8dfe99b72aa19e70a0b7737969c46e625dc2f9f2d42b0
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
-F src/sqlite3ext.h 27951f294f29cd875c6027f2707d644ef99f469bd97514568b5a8581a114db8c
-F src/sqliteInt.h 7a29ba700a51eeb925731749a570cf3859f6a58ed94797ecf47508875b0ba279
-F src/sqliteLimit.h 1513bfb7b20378aa0041e7022d04acb73525de35b80b252f1b83fedb4de6a76b
+F src/sqlite3ext.h 9c5269260409eb3275324ccace6a13a96f4ad330c708415f70ca6097901ff4ee
+F src/sqliteInt.h 5f74c1c52b152259ee07f241821620f11736e4f590936cfaf1cbbff9a2f563d3
+F src/sqliteLimit.h 95cb8479ca459496d9c1c6a9f76b38aee12203a56ce1092fe13e50ae2454c032
 F src/status.c 9ff2210207c6c3b4d9631a8241a7d45ab1b26a0e9c84cb07a9b5ce2de9a3b278
 F src/table.c b46ad567748f24a326d9de40e5b9659f96ffff34
-F src/tclsqlite.c 97590069efaba5a4928ecffb606e3771dd93ee8e6bf248a62a6507c37a2b2e46
-F src/test1.c 4d0ab2f67053a4fff87d1d3586ecc0e5322a1fc45dd4119ab11dc96de44f17a1
+F src/tclsqlite.c d0aa320416efe88c4dbb0156ed6c494f2f9958871a940e46984ee57b3e7fcc50
+F src/test1.c 5e8b8cc54e8c88906ea8a084387aa79bad245e539f4cee73149e5c0527e1db16
 F src/test2.c 3efb99ab7f1fc8d154933e02ae1378bac9637da5
 F src/test3.c 61798bb0d38b915067a8c8e03f5a534b431181f802659a6616f9b4ff7d872644
 F src/test4.c 405834f6a93ec395cc4c9bb8ecebf7c3d8079e7ca16ae65e82d01afd229694bb
@@ -556,7 +556,7 @@ F src/test_backup.c bf5da90c9926df0a4b941f2d92825a01bbe090a0
 F src/test_bestindex.c 78809f11026f18a93fcfd798d9479cba37e1201c830260bf1edc674b2fa9b857
 F src/test_blob.c ae4a0620b478548afb67963095a7417cd06a4ec0a56adb453542203bfdcb31ce
 F src/test_btree.c 8b2dc8b8848cf3a4db93f11578f075e82252a274
-F src/test_config.c e25826d693039cdd45963de378cbf39e3af0e8aa7a8a6fc159876f4e7b5a4f8c
+F src/test_config.c 5ea19bf0972a9d91728518b4d30e91477acce80496003ecbef3a7fb18d0bd081
 F src/test_delete.c e2fe07646dff6300b48d49b2fee2fe192ed389e834dd635e3b3bac0ce0bf9f8f
 F src/test_demovfs.c 86142ba864d4297d54c5b2e972e74f3141ae4b30f05b3a95824184ed2d3d7f91
 F src/test_devsym.c 6109b45c3db3ef7b002320947ed448c027356ab8b885156ff535fd8684d4a571
@@ -570,7 +570,7 @@ F src/test_journal.c a0b9709b2f12b1ec819eea8a1176f283bca6d688a6d4a502bd6fd79786f
 F src/test_loadext.c 337056bae59f80b9eb00ba82088b39d0f4fe6dfd
 F src/test_malloc.c dec0aa821b230773aeb3dd11d652c1193f7cedb18a20b25659bc672288115242
 F src/test_md5.c 7268e1e8c399d4a5e181b64ac20e1e6f3bc4dd9fc87abac02db145a3d951fa8c
-F src/test_multiplex.c e054459f7633f3ff8ce1245da724f9a8be189e4e
+F src/test_multiplex.c 46e278397bef99b10530c1a695b4f6f23823fde6d6589b182f14e9bd43440b57
 F src/test_multiplex.h 5436d03f2d0501d04f3ed50a75819e190495b635
 F src/test_mutex.c 7f4337ba23ee6b1d2ec81c189653608cb069926a
 F src/test_onefile.c f31e52e891c5fef6709b9fcef54ce660648a34172423a9cbdf4cbce3ba0049f4
@@ -586,7 +586,7 @@ F src/test_superlock.c 4839644b9201da822f181c5bc406c0b2385f672e
 F src/test_syscall.c 1073306ba2e9bfc886771871a13d3de281ed3939
 F src/test_tclsh.c eeafce33ad2136d57e5dec10f1e9a4347447eb72ffd504a1c7b9c6bfe2e71578
 F src/test_tclvar.c 33ff42149494a39c5fbb0df3d25d6fafb2f668888e41c0688d07273dcb268dfc
-F src/test_thread.c 911d15fb14e19c0c542bdc8aabf981c2f10a4858
+F src/test_thread.c 269ea9e1fa5828dba550eb26f619aa18aedbc29fd92f8a5f6b93521fbb74a61c
 F src/test_vdbecov.c f60c6f135ec42c0de013a1d5136777aa328a776d33277f92abac648930453d43
 F src/test_vfs.c 36822d696789535bdd0260f07d2c9a46546082fea8bb1d0a7354c7f9366e37ea
 F src/test_vfstrace.c bab9594adc976cbe696ff3970728830b4c5ed698
@@ -596,32 +596,32 @@ F src/test_window.c cdae419fdcea5bad6dcd9368c685abdad6deb59e9fc8b84b153de513d394
 F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
 F src/threads.c 4ae07fa022a3dc7c5beb373cf744a85d3c5c6c3c
 F src/tokenize.c 7b17f6e2f20f6cbcb0b215025a86b7457c38451fc7622f705e553d7a488c572d
-F src/treeview.c 438c1000587b33faba35e87596bebcf7f40638d98f33781cdd9e04711b18b09c
+F src/treeview.c f78cd9cd79a889e70cd98bd6edd4a464c421452da833e65e987d97d8c41f71fe
 F src/trigger.c a40d50e88bd3355f1d2a73f0a3b2d6b42eae26ca4219001b82ef0d064439badc
-F src/update.c 9ad19af96aff95dc02a923a99f97c1bc0b909009a29a2914b796f786b9ac0c60
+F src/update.c 3eb778c42155d944377a4ee5e440b04520f07094804ed6ce63d2528f619614d9
 F src/upsert.c 2920de71b20f04fe25eb00b655d086f0ba60ea133c59d7fa3325c49838818e78
-F src/utf.c 736ff76753236ffbc8b5b939f5e0607f28aeaa7c780b3a56b419228f0a81c87b
-F src/util.c d035b09df9cecbc0e8f07c34b815acbf0d43c8adc8d2c540e3dc92eecb27855a
-F src/vacuum.c 82dcec9e7b1afa980288718ad11bc499651c722d7b9f32933c4d694d91cb6ebf
-F src/vdbe.c e3dd230ece613409507523e68436764cc20638bb77ba2f416097de5b37235ce1
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-F src/vdbeInt.h 30d3e8b991547cdf39025e416a0a737b0416d46747af70ae058f60e2e0466fe7
+F src/utf.c 95fb6e03a5ca679045c5adccd05380f0addccabef5911abddcb06af069500ab7
+F src/util.c a285c1e026907b69fa2592bd05047a565a1d8a1aef2b73c924b6a8ffe772871a
+F src/vacuum.c 813b510ba887fee6492bcb11f2bf77d7eb58b232b83649136372e0a2fc17f4b9
+F src/vdbe.c 6d0cf7ac2d54f78ff2fb55cbef970199695319c0a95bf862c6561d7d2c9f7134
+F src/vdbe.h 51282fbe819ee0e8eeeaab176240860d334c20a12b14f3b363e7f1a4e05d60b9
+F src/vdbeInt.h a17146053a1aa438474012998fe07e314f3df274a61491ad838ad85d848ac051
 F src/vdbeapi.c 1252d80c548711e47a6d84dae88ed4e95d3fbb4e7bd0eaa1347299af7efddf02
-F src/vdbeaux.c ff690e6c9314ef281de7c06f8c8c33393f0afca80aabb1fe69836dcf2d60b0bf
+F src/vdbeaux.c 1ca2d4b3f913ecc4759becfab72952f25493390d674714586ab356c9f06ac279
 F src/vdbeblob.c 253ed82894924c362a7fa3079551d3554cd1cdace39aa833da77d3bc67e7c1b1
-F src/vdbemem.c 6200af702c87105d5b00d8ac5f5fa2c6d8f796aa974dbe2d15dcd95379ba1fa7
-F src/vdbesort.c a3be032cc3fee0e3af31773af4a7a6f931b7230a34f53282ccf1d9a2a72343be
+F src/vdbemem.c 39b942ecca179f4f30a32b54579a85d74ccaefa5af2a0ad2700abe5ef0768b22
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 F src/vdbetrace.c fa3bf238002f0bbbdfb66cc8afb0cea284ff9f148d6439bc1f6f2b4c3b7143f0
 F src/vtab.c 7b704a90515a239c6cdba6a66b1bb3a385e62326cceb5ecb05ec7a091d6b8515
 F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
-F src/wal.c dbc77159e6734c2d64343cb8624ad245d89dd79a5010750fce8118b3fa7be2e8
+F src/wal.c 697424314e40d99f93f548c7bfa526c10e87f4bdf64d5a76a96b999dd7133ebc
 F src/wal.h 606292549f5a7be50b6227bd685fa76e3a4affad71bb8ac5ce4cb5c79f6a176a
 F src/walker.c a137468bf36c92e64d2275caa80c83902e3a0fc59273591b96c6416d3253d05d
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-F src/whereexpr.c 4b34be1434183e7bb8a05d4bf42bd53ea53021b0b060936fbd12062b4ff6b396
-F src/window.c f8ba2ee12a19b51d3ba42c16277c74185ee9215306bc0d5a03974ade8b5bc98f
+F src/where.c 3b8c9bd013eb0736e16f60bdc109e83337ef99513a3aff5f16ddac036e6c277e
+F src/whereInt.h 6b874aa15f94e43a2cec1080be64d955b04deeafeac90ffb5d6975c0d511be3c
+F src/wherecode.c 7b939de85d65cc4b4bfa197513136b9e0ae03167e3b82842ca5a0ba1055ba65d
+F src/whereexpr.c 264d58971eaf8256eb5b0917bcd7fc7a1f1109fdda183a8382308a1b18a2dce7
+F src/window.c 0b824edbab94e473d0ade203645798ce80358d0c89ff6ac0ba0f7e2768543319
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
 F test/affinity2.test ce1aafc86e110685b324e9a763eab4f2a73f737842ec3b687bd965867de90627
 F test/affinity3.test 6a101af2fc945ce2912f6fe54dd646018551710d
@@ -639,7 +639,7 @@ F test/altercol.test 1d6a6fe698b81e626baea4881f5717f9bc53d7d07f1cd23ee7ad1b931f1
 F test/alterlegacy.test 82022721ce0de29cedc9a7af63bc9fcc078b0ee000f8283b4b6ea9c3eab2f44b
 F test/altermalloc.test 167a47de41b5c638f5f5c6efb59784002b196fff70f98d9b4ed3cd74a3fb80c9
 F test/altermalloc2.test fa7b1c1139ea39b8dec407cf1feb032ca8e0076bd429574969b619175ad0174b
-F test/altertab.test bd61e5b73d495ec4707133db91b07f09d57e339d988de5ec5a76d34a2198e8f2
+F test/altertab.test 89735fee876427c3f25dc76d887295fbe3659a91bab92468de9f0e622d48bb57
 F test/altertab2.test b0d62f323ca5dab42b0bc028c52e310ebdd13e655e8fac070fe622bad7852c2b
 F test/altertab3.test 155b8dc225ce484454a7fb4c8ba745680b6fa0fc3e08919cbbc19f9309d128ff
 F test/amatch1.test b5ae7065f042b7f4c1c922933f4700add50cdb9f
@@ -655,6 +655,7 @@ F test/analyzeC.test 489fe2ea3be3f17548e8dd895f1b41c9669b52de1b0861f5bffe6eec46e
 F test/analyzeD.test e50cd0b3e6063216cc0c88a1776e8645dc0bd65a6bb275769cbee33b7fd8d90c
 F test/analyzeE.test 8684e8ac5722fb97c251887ad97e5d496a98af1d
 F test/analyzeF.test 9e1a0537949eb5483642b1140a5c39e5b4025939024b935398471fa552f4dabb
+F test/analyzeG.test a48c0f324dd14de9a40d52abe5ca2637f682b9a791d2523dd619f6efa14e345b
 F test/analyzer1.test 459fa02c445ddbf0101a3bad47b34290a35f2e49
 F test/async.test 1d0e056ba1bb9729283a0f22718d3a25e82c277b
 F test/async2.test c0a9bd20816d7d6a2ceca7b8c03d3d69c28ffb8b
@@ -699,6 +700,7 @@ F test/bestindex3.test 7622e792ff2da16d262d3cea6ad914591ac4806d57ed128e6c940b792
 F test/bestindex4.test 038e3d0789332f3f1d61474f9bbc9c6d08c6bd1783a978f31f38ad82688de601
 F test/bestindex5.test 67c1166131bb59f9e47c00118f7d432ca5491e6cae6ca3f87ca9db20103a78f9
 F test/bestindex6.test d856a9bb63d927493575823eed44053bc36251e241aa364e54d0f2a2d302e1d4
+F test/bestindex7.test f36ada201973d3022cf7afffffe08de9e58341996020e7a2df9a1d2f2be20132
 F test/between.test 68137a6e941c221417c15b6fe2d55f27bb1b6ab48bdf9e2aa51efdd85bc53802
 F test/bigfile.test aa74f4e5db51c8e54a1d9de9fa65d01d1eb20b59
 F test/bigfile2.test 1b489a3a39ae90c7f027b79110d6b4e1dbc71bfc
@@ -732,7 +734,7 @@ F test/capi3d.test aba917805573a03deed961a21f07a5a84505ad0a616f7e3fc1508844a15bc
 F test/capi3e.test 3d49c01ef2a1a55f41d73cba2b23b5059ec460fe
 F test/cast.test 2906ccab6a3ebd147ffa63304b635be903ce58264110d0a0eb4fd9939422bb53
 F test/cffault.test 9d6b20606afe712374952eec4f8fd74b1a8097ef
-F test/check.test b21a76546c2115af2674280566a8eba577e72adfec330c3d9a8a466d41f8eb0d
+F test/check.test 9776af795bb5d0f197b7f8fe248052e3ca2ed35304d863efcdbf8b1316e11f65
 F test/checkfault.test da6cb3d50247169efcb20bdf57863a3ccfa1d27d9e55cd324f0680096970f014
 F test/chunksize.test 427d87791743486cbf0c3b8c625002f3255cb3a89c6eba655a98923b1387b760
 F test/close.test eccbad8ecd611d974cbf47278c3d4e5874faf02d811338d5d348af42d56d647c
@@ -775,7 +777,7 @@ F test/corruptH.test 79801d97ec5c2f9f3c87739aa1ec2eb786f96454
 F test/corruptI.test a17bbf54fdde78d43cf3cc34b0057719fd4a173a3d824285b67dc5257c064c7b
 F test/corruptJ.test 4d5ccc4bf959464229a836d60142831ef76a5aa4
 F test/corruptK.test 5b4212fe346699831c5ad559a62c54e11c0611bdde1ea8423a091f9c01aa32af
-F test/corruptL.test 4f28fbef85a6f27489542bb915ab7938dcd68f896e8f62a7d23de02b32489e5d
+F test/corruptL.test 13ef74a93223af25015d223add0df4c2d375f0b958b546a2a72033f2fdab7a70
 F test/corruptM.test 7d574320e08c1b36caa3e47262061f186367d593a7e305d35f15289cc2c3e067
 F test/cost.test 51f4fcaae6e78ad5a57096831259ed6c760e2ac6876836e91c00030fad385b34
 F test/count.test cb2e0f934c6eb33670044520748d2ecccd46259c
@@ -808,7 +810,7 @@ F test/dbfuzz2.c c2c9cb40082a77b7e95ffb8b2da1e93322efadfb1c8c1e0001c95a0af1e156c
 F test/dbpage.test 650234ba683b9d82b899c6c51439819787e7609f17a0cc40e0080a7b6443bc38
 F test/dbstatus.test 4a4221a883025ffd39696b3d1b3910b928fb097d77e671351acb35f3aed42759
 F test/dbstatus2.test f5fe0afed3fa45e57cfa70d1147606c20d2ba23feac78e9a172f2fe8ab5b78ef
-F test/default.test 3e46c421eebefd2787c2f96673efabf792d360f3a1d5073918cbe450ce672a62
+F test/default.test 9687cfb16717e4b8238c191697c98be88c0b16e568dd5368cd9284154097ef50
 F test/delete.test 31832b0c45ecb51a54348c68db173be462985901e6ed7f403d6d7a8f70ab4ef0
 F test/delete2.test 3a03f2cca1f9a67ec469915cb8babd6485db43fa
 F test/delete3.test 555e84a00a99230b7d049d477a324a631126a6ab
@@ -847,7 +849,7 @@ F test/e_walauto.test 248af31e73c98df23476a22bdb815524c9dc3ba8
 F test/e_walckpt.test 28c371a6bb5e5fe7f31679c1df1763a19d19e8a0
 F test/e_walhook.test 01b494287ba9e60b70f6ebf3c6c62e0ffe01788e344a4846b08e5de0b344cb66
 F test/emptytable.test a38110becbdfa6325cd65cb588dca658cd885f62
-F test/enc.test e54531cd6bf941ee6760be041dff19a104c7acea
+F test/enc.test 9a7be5479da985381d740b15f432800f65e2c87029ee57a318f42cb2eb43763a
 F test/enc2.test 848bf05f15b011719f478dddb7b5e9aea35e39e457493cba4c4eef75d849a5ec
 F test/enc3.test 6807f7a7740a00361ca8d0ccd66bc60c8dc5f2b6
 F test/enc4.test c8f1ce3618508fd0909945beb8b8831feef2c020
@@ -940,10 +942,10 @@ F test/fts3b.test c15c4a9d04e210d0be67e54ce6a87b927168fbf9c1e3faec8c1a732c366fd4
 F test/fts3c.test fc723a9cf10b397fdfc2b32e73c53c8b1ec02958
 F test/fts3comp1.test a0f5b16a2df44dd0b15751787130af2183167c0c
 F test/fts3conf.test c84bbaec81281c1788aa545ac6e78a6bd6cde2bdbbce2da261690e3659f5a76b
-F test/fts3corrupt.test ce7f7b5eaeee5f1804584d061b978d85e64abf2af9adaa7577589fac6f7eae01
+F test/fts3corrupt.test 79a32ffdcd5254e2f7fa121d9656e61949ad049c3c6554229911b7ceac37c9c6
 F test/fts3corrupt2.test bf55c3fa0b0dc8ea1c0fe5543623bd27714585da6a129038fd6999fe3b0d25f3
 F test/fts3corrupt3.test 0d5b69a0998b4adf868cc301fc78f3d0707745f1d984ce044c205cdb764b491f
-F test/fts3corrupt4.test e407c7b4f4cd3335080833aff3a8855d520e531b79f84dcc77be4623af2342d4
+F test/fts3corrupt4.test e8ad49403179cbf714b6b669d2e0f9234ae95f4ca258a253b0f29ce28c1b027c
 F test/fts3corrupt5.test 0549f85ec4bd22e992f645f13c59b99d652f2f5e643dac75568bfd23a6db7ed5
 F test/fts3cov.test 7eacdbefd756cfa4dc2241974e3db2834e9b372ca215880e00032222f32194cf
 F test/fts3d.test 2bd8c97bcb9975f2334147173b4872505b6a41359a4f9068960a36afe07a679f
@@ -978,7 +980,7 @@ F test/fts3sort.test ed34c716a11cc2009a35210e84ad5f9c102362ca
 F test/fts3tok1.test a663f4cac22a9505400bc22aacb818d7055240409c28729669ea7d4cc2120d15
 F test/fts3tok_err.test 52273cd193b9036282f7bacb43da78c6be87418d
 F test/fts3varint.test 0b84a3fd4eba8a39f3687523804d18f3b322e6d4539a55bf342079c3614f2ada
-F test/fts4aa.test 4338ea7a67f7e19269bf6e6fb4a291352aa32296e7daed87f9823d57016a1ef7
+F test/fts4aa.test 9857f939f5aeb6cc4c143e74cf1cfe07ac87972240ac26d3a0100e36d02f4359
 F test/fts4check.test 6259f856604445d7b684c9b306b2efb6346834c3f50e8fc4a59a2ca6d5319ad0
 F test/fts4content.test 73bbb123420d2c46ef2fb3b24761e9acdb78b0877179d3a5d7d57aada08066f6
 F test/fts4docid.test e33c383cfbdff0284685604d256f347a18fdbf01
@@ -992,6 +994,7 @@ F test/fts4merge2.test 5faa558d1b672f82b847d2a337465fa745e46891
 F test/fts4merge3.test 8d9ccb4a3d41c4c617a149d6c4b13ad02de797d0
 F test/fts4merge4.test d895b1057a7798b67e03455d0fa50e9ea836c47b
 F test/fts4merge5.test 69932d85cda8a1c4dcfb742865900ed8fbda51724b8cf9a45bbe226dfd06c596
+F test/fts4min.test 1c11e4bde16674a0c795953509cbc3731a7d9cbd1ddc7f35467bf39d632d749f
 F test/fts4noti.test 5553d7bb2e20bf4a06b23e849352efc022ce6309
 F test/fts4onepass.test d69ddc4ee3415e40b0c5d1d0408488a87614d4f63ba9c44f3e52db541d6b7cc7
 F test/fts4opt.test 0fd0cc84000743ff2a883b9b84b4a5be07249f0ba790c8848a757164cdd46b2a
@@ -1000,11 +1003,11 @@ F test/fts4rename.test 15fd9985c2bce6dea20da2245b22029ec89bd4710ed317c4c53abbe3c
 F test/fts4umlaut.test fcaca4471de7e78c9d1f7e8976e3e8704d7d8ad979d57a739d00f3f757380429
 F test/fts4unicode.test ceca76422abc251818cb25dabe33d3c3970da5f7c90e1540f190824e6b3a7c95
 F test/full.test 6b3c8fb43c6beab6b95438c1675374b95fab245d
-F test/func.test b7f1a706d1bb8de103a24bd0c30c9e3dc3eedf0df24aabc54b0a4f6e08742622
+F test/func.test f673822636fb8ed618dd2b80230d16e495d19c8f2e2e7d6c22e93e2b3de097ad
 F test/func2.test 772d66227e4e6684b86053302e2d74a2500e1e0f
 F test/func3.test 2bb0f31ab7baaed690b962a88544d7be6b34fa389364bc36a44e441ed3e3f1e6
-F test/func4.test 6beacdfcb0e18c358e6c2dcacf1b65d1fa80955f
-F test/func5.test cdd224400bc3e48d891827cc913a57051a426fa4
+F test/func4.test a94858a8c1f10a408b0b3db439c990b59dbb2349411d503de011ac4e2b5f27a6
+F test/func5.test 863e6d1bd0013d09c17236f8a13ea34008dd857d87d85a13a673960e4c25d82a
 F test/func6.test 90e42b64c4f9fb6f04f44cb8a1da586c8542502e926b19c76504fe74ff2a9b7c
 F test/fuzz-oss1.test e58330d01cbbd8215ee636b17a03fe220b37dbfa
 F test/fuzz.test 96083052bf5765e4518c1ba686ce2bab785670d1
@@ -1013,15 +1016,15 @@ F test/fuzz3.test 9c813e6613b837cb7a277b0383cd66bfa07042b4cf0317157c35852f30043c
 F test/fuzz4.test c229bcdb45518a89e1d208a21343e061503460ac69fae1539320a89f572eb634
 F test/fuzz_common.tcl b7197de6ed1ee8250a4f82d67876f4561b42ee8cbbfc6160dcb66331bad3f830
 F test/fuzz_malloc.test f348276e732e814802e39f042b1f6da6362a610af73a528d8f76898fde6b22f2
-F test/fuzzcheck.c a9746aa49843827f960bc875cc70e04b0cfcd3e10e6676e3abc402ad190e165f
+F test/fuzzcheck.c cdd94f1710957b8b907019b25c6cf4f7b63815a08b19021e8b215bc2419bb7f9
 F test/fuzzdata1.db d36e88741b4f23bcbaaf55b006290669d03c6c891cf13c7b3a53bc1b097b693f
 F test/fuzzdata2.db 128b3feeb78918d075c9b14b48610145a0dd4c8d6f1ca7c2870c7e425f5bf31f
 F test/fuzzdata3.db c6586d3e3cef0fbc18108f9bb649aa77bfc38aba
 F test/fuzzdata4.db b502c7d5498261715812dd8b3c2005bad08b3a26e6489414bd13926cd3e42ed2
 F test/fuzzdata5.db e35f64af17ec48926481cfaf3b3855e436bd40d1cfe2d59a9474cb4b748a52a5
 F test/fuzzdata6.db 92a80e4afc172c24f662a10a612d188fb272de4a9bd19e017927c95f737de6d7
-F test/fuzzdata7.db e7a86fd83dda151d160445d542e32e5c6019c541b3a74c2a525b6ac640639711
-F test/fuzzdata8.db 8bd41f8e1b9c61af011bf5cf16a85fb7f718fdd3348e476b78ba36adab872653
+F test/fuzzdata7.db 0166b56fd7a6b9636a1d60ef0a060f86ddaecf99400a666bb6e5bbd7199ad1f2
+F test/fuzzdata8.db 00cd360c354083d69572e82e1da9f582a2ed60760baf9c04558ebadd885d390b
 F test/fuzzer1.test 3d4c4b7e547aba5e5511a2991e3e3d07166cfbb8
 F test/fuzzer2.test a85ef814ce071293bce1ad8dffa217cbbaad4c14
 F test/fuzzerfault.test 8792cd77fd5bce765b05d0c8e01b9edcf8af8536
@@ -1036,7 +1039,7 @@ F test/hook2.test b9ff3b8c6519fb67f33192f1afe86e7782ee4ac8
 F test/icu.test 41aa8847745a879b897a7febea0f8f9efc8e67fe8bf680589b6e07c7b0a1569a
 F test/ieee754.test 806fc0ce7f305f57e3331eaceeddcfec9339e607
 F test/imposter1.test c3f1db2d3db2c24611a6596a3fc0ffc14f1466c8
-F test/in.test 3e9bd58597a444123a40a9ac94cae0fec8897e17e9f519b02fc370bcf5ba5175
+F test/in.test ae4ba0fe3232fdd84ef1090a68c5cd6ccd93f1f8774d5c967dd0c1b301492eed
 F test/in2.test 5d4c61d17493c832f7d2d32bef785119e87bde75
 F test/in3.test 3cbf58c87f4052cee3a58b37b6389777505aa0c0
 F test/in4.test 65460600d48933adba4283c6ebd089aae173d16136ab9d01f74c89089090c5a5
@@ -1194,7 +1197,7 @@ F test/notify2.test 2ecabaa1305083856b7c39cf32816b612740c161
 F test/notify3.test 10ff25cde502e72a92053a2f215d64bece4ef934
 F test/notnull.test a37b663d5bb728d66fc182016613fb8e4a0a4bbf3d75b8876a7527f7d4ed3f18
 F test/null.test 0dcce4f04284ec66108c503327ad6d224c0752b3
-F test/nulls1.test fe4153fd59a3786b4b9f3663a3e65a3aa43a318c7b4d7dcb3f6c3ed5652c9095
+F test/nulls1.test 82c5bc33148405f21205865abf13c786084438d573a4ac4e87e11b6091cde526
 F test/numcast.test 5d126f7f581432e86a90d1e35cac625164aec4a1
 F test/numindex1.test 20a5450d4b056e48cd5db30e659f13347a099823
 F test/offset1.test f06b83657bcf26f9ce805e67450e189e282143b2
@@ -1206,7 +1209,7 @@ F test/orderby1.test 6bf0ce45cbfb1cf4779dd418ac5e8cf66abfa04de2c1d2edf1e0e85f152
 F test/orderby2.test bc11009f7cd99d96b1b11e57b199b00633eb5b04
 F test/orderby3.test 8619d06a3debdcd80a27c0fdea5c40b468854b99
 F test/orderby4.test 4d39bfbaaa3ae64d026ca2ff166353d2edca4ba4
-F test/orderby5.test 5f4d6cb93cc2f6d3f4228354310a2ce1fbd95d5bbffcba8c6482eeb62a466407
+F test/orderby5.test bd7d9e3380e87e5dcf6ea817ebaab6d15da213c7804b38767e1b3e695e85650b
 F test/orderby6.test 8b38138ab0972588240b3fca0985d2e400432859
 F test/orderby7.test 3d1383d52ade5b9eb3a173b3147fdd296f0202da
 F test/orderby8.test 23ef1a5d72bd3adcc2f65561c654295d1b8047bd
@@ -1300,7 +1303,7 @@ F test/securedel.test 2f70b2449186a1921bd01ec9da407fbfa98c3a7a5521854c300c194b2f
 F test/securedel2.test 2d54c28e46eb1fd6902089958b20b1b056c6f1c5
 F test/select1.test 009a6d8eacd9684d046302b8d13b50846a87e39d6f08e92178aa13e95ea29a2d
 F test/select2.test 352480e0e9c66eda9c3044e412abdf5be0215b56
-F test/select3.test 3905450067c28766bc83ee397f6d87342de868baa60f2bcfd00f286dfbd62cb9
+F test/select3.test ddd1bc6d0c8dece136321c11bd26d0d8ad17f2b27c72935fdd6574d8cb99d1d4
 F test/select4.test 5389d9895968d1196c457d59b3ee6515d771d328
 F test/select5.test df9ec0d218cedceb4fe7b63262025b547b50a55e59148c6f40b60ca25f1d4546
 F test/select6.test 319d45e414cdd321bf17cfacedaf19e3935ad64dac357c53f1492338c6e9b801
@@ -1330,11 +1333,11 @@ F test/sharedA.test 49d87ec54ab640fbbc3786ee3c01de94aaa482a3a9f834ad3fe92770eb69
 F test/sharedB.test 16cc7178e20965d75278f410943109b77b2e645e
 F test/shared_err.test 32634e404a3317eeb94abc7a099c556a346fdb8fb3858dbe222a4cbb8926a939
 F test/sharedlock.test 5ede3c37439067c43b0198f580fd374ebf15d304
-F test/shell1.test 3c9707dce15e8fdca529503378660f099777d3ddcedccf801a37589a405c5942
+F test/shell1.test 43e12c7d4ff65f041803ad24a93fd3818deb2cb83e721810f27d0fde61d64a13
 F test/shell2.test e242a9912f44f4c23c3d1d802a83e934e84c853b
 F test/shell3.test ac8c2b744014c3e9a0e26bfd829ab65f00923dc1a91ffd044863e9423cc91494
 F test/shell4.test 1c6aef11daaa2d6830acaba3ac9cbec93fbc1c3d5530743a637f39b3987d08ce
-F test/shell5.test 23939a4c51f0421330ea61dbd3c74f9c215f5f8d3d1a94846da6ffc777a35458
+F test/shell5.test 84a30b55722a95a5b72989e691c469a999ca7591e7aa00b7fabc783ea5c9a6fe
 F test/shell6.test 1ceb51b2678c472ba6cf1e5da96679ce8347889fe2c3bf93a0e0fa73f00b00d3
 F test/shell7.test 115132f66d0463417f408562cc2cf534f6bbc6d83a6d50f0072a9eb171bae97f
 F test/shell8.test 96be02ea0c21f05b24c1883d7b711a1fa8525a68ab7b636aacf6057876941013
@@ -1371,7 +1374,7 @@ F test/speed3.test 694affeb9100526007436334cf7d08f3d74b85ef
 F test/speed4.test abc0ad3399dcf9703abed2fff8705e4f8e416715
 F test/speed4p.explain 6b5f104ebeb34a038b2f714150f51d01143e59aa
 F test/speed4p.test 377a0c48e5a92e0b11c1c5ebb1bc9d83a7312c922bc0cb05970ef5d6a96d1f0c
-F test/speedtest1.c f3bfe3c6a87cbd88e4c4e38005d972bcc1019d1b2fe9569425f86629b11f6c31
+F test/speedtest1.c d564e7689a731f691adfe2cf3f3f735d3e11f100eebb065e2a0a267fdc39fb26
 F test/spellfix.test 951a6405d49d1a23d6b78027d3877b4a33eeb8221dcab5704b499755bb4f552e
 F test/spellfix2.test dfc8f519a3fc204cb2dfa8b4f29821ae90f6f8c3
 F test/spellfix3.test 0f9efaaa502a0e0a09848028518a6fb096c8ad33
@@ -1438,7 +1441,7 @@ F test/tkt-385a5b56b9.test 5204a7cba0e28c99df0acbf95af5e1af4d32965a7a14de6eccebf
 F test/tkt-38cb5df375.test f3cc8671f1eb604d4ae9cf886ed4366bec656678
 F test/tkt-3998683a16.test 6d1d04d551ed1704eb3396ca87bb9ccc8c5c1eb7
 F test/tkt-3a77c9714e.test 90e3e8455ee945a4076d4c44062b8845708af24a880355328fe7008f2047c9f0
-F test/tkt-3fe897352e.test 27e26eb0f1811aeba4d65aba43a4c52e99da5e70
+F test/tkt-3fe897352e.test 6849fde0a87165ff83f54f5047af7c743d72af26908fadb90174f3294450b3f4
 F test/tkt-4a03edc4c8.test 91c0e135888cdc3d4eea82406a44b05c8c1648d0
 F test/tkt-4c86b126f2.test cbcc611becd0396890169ab23102dd70048bbc9a
 F test/tkt-4dd95f6943.test 3d0ce415d2ee15d3d564121960016b9c7be79407
@@ -1701,7 +1704,7 @@ F test/where9.test 2c554b97bbdb2fdf26c57099f60db8a52bfcf7c147f2c256f9798fa0e267c
 F test/whereA.test 6c6a420ca7d313242f9b1bd471dc80e4d0f8323700ba9c78df0bb843d4daa3b4
 F test/whereB.test 0def95db3bdec220a731c7e4bec5930327c1d8c5
 F test/whereC.test cae295158703cb3fc23bf1a108a9ab730efff0f6
-F test/whereD.test 711d4df58d6d4fb9b3f5ce040b818564198be002
+F test/whereD.test c1c335e914e28b122e000e9310f02d2be83e1c9dbca2e29f46bd732703944d1b
 F test/whereE.test b3a055eef928c992b0a33198a7b8dc10eea5ad2f
 F test/whereF.test 3d9412b1199d3e2bed34fcb76b4c48d0bf4df95d27e3f8dd27b6f8b4716d0d89
 F test/whereG.test c9378b285828754377ef47fbece7264018c0a3743e7eb686e89917bb9df10885
@@ -1709,7 +1712,7 @@ F test/whereH.test e4b07f7a3c2f5d31195cd33710054c78667573b2
 F test/whereI.test a2874062140ed4aba9ffae76e6190a3df6fc73d1373fdfa8fd632945082a5364
 F test/whereJ.test 88287550f6ee604422403b053455b1ad894eeaa5c35d348532dfa1439286cb9a
 F test/whereK.test f8e3cf26a8513ecc7f514f54df9f0572c046c42b
-F test/whereL.test 976f100f412ce2f39bf923eb57794cdc39fc0a3fec8fab025d51706a7cc4845b
+F test/whereL.test d19499a39c9e3e5a74460778b009558d328c8a230c0e6825c9996c9adff89058
 F test/wherefault.test 1374c3aa198388925246475f84ad4cd5f9528864
 F test/wherelfault.test 9012e4ef5259058b771606616bd007af5d154e64cc25fa9fd4170f6411db44e3
 F test/wherelimit.test 592081800806d297dd7449b1030c863d2883d6d42901837ccd2e5a9bd962edb0
@@ -1718,7 +1721,7 @@ F test/win32heap.test 10fd891266bd00af68671e702317726375e5407561d859be1aa04696f2
 F test/win32lock.test fbf107c91d8f5512be5a5b87c4c42ab9fdd54972
 F test/win32longpath.test 169c75a3b2e43481f4a62122510210c67b08f26d
 F test/win32nolock.test ac4f08811a562e45a5755e661f45ca85892bdbbc
-F test/window1.test cec56b9a0a2e7ca4bd63b30590c7b049dce9acfd87478e2597e13b67152bd821
+F test/window1.test 879a1928c9a6b4f7abdad1a4f31fe1e6c7fe36422935606367fecfdee8b4d5b5
 F test/window2.tcl 492c125fa550cda1dd3555768a2303b3effbeceee215293adf8871efc25f1476
 F test/window2.test e466a88bd626d66edc3d352d7d7e1d5531e0079b549ba44efb029d1fbff9fd3c
 F test/window3.tcl acea6e86a4324a210fd608d06741010ca83ded9fde438341cb978c49928faf03
@@ -1736,7 +1739,7 @@ F test/windowA.test 6d63dc1260daa17141a55007600581778523a8b420629f1282d2acfc36af
 F test/windowB.test 7a983ea1cc1cf72be7f378e4b32f6cb2d73014c5cd8b25aaee825164cd4269e5
 F test/windowerr.tcl f5acd6fbc210d7b5546c0e879d157888455cd4a17a1d3f28f07c1c8a387019e0
 F test/windowerr.test a8b752402109c15aa1c5efe1b93ccb0ce1ef84fa964ae1cd6684dd0b3cc1819b
-F test/windowfault.test 8e3b69abe0eea9595ba3940afd9c63644e11966ed8815734b67f1479a8e9891a
+F test/windowfault.test 72375ae71031eabf96bc88d0af128c8628a091ddc99b5a394e848b3df5fc17ad
 F test/with1.test 584580a5ae79868a91873863f8cb2d00040006dc1e4c332ef1d8642f2815dc6e
 F test/with2.test e0030e2f0267a910d6c0e4f46f2dfe941c1cc0d4f659ba69b3597728e7e8f1ab
 F test/with3.test 13b3336739da648a9e4dfa11bb04e73a920c97620041007c5f75d5d14084c346
@@ -1785,12 +1788,12 @@ F tool/max-limits.c cbb635fbb37ae4d05f240bfb5b5270bb63c54439
 F tool/mkautoconfamal.sh 422fc365358a2e92876ffc62971a0ff28ed472fc8bcf9de0df921c736fdeca5e
 F tool/mkccode.tcl 86463e68ce9c15d3041610fedd285ce32a5cf7a58fc88b3202b8b76837650dbe x
 F tool/mkctimec.tcl dd183b73ae1c28249669741c250525f0407e579a70482371668fd5f130d9feb3
-F tool/mkkeywordhash.c 27ffc6f6e7e3ecbfc5bca1f1f11a09fc5badf6d67557a5fb2d3b069dbed90617
+F tool/mkkeywordhash.c 11a3f3af8e787d0c5ca459ed66fe80fd09e661876506e7b978ec08c19477bdc2
 F tool/mkmsvcmin.tcl 6ecab9fe22c2c8de4d82d4c46797bda3d2deac8e763885f5a38d0c44a895ab33
 F tool/mkopcodec.tcl d1b6362bd3aa80d5520d4d6f3765badf01f6c43c
 F tool/mkopcodeh.tcl 352a4319c0ad869eb26442bf7c3b015aa15594c21f1cce5a6420dbe999367c21
 F tool/mkopts.tcl 680f785fdb09729fd9ac50632413da4eadbdf9071535e3f26d03795828ab07fa
-F tool/mkpragmatab.tcl ca12b1c718ececdab2d3aacb437bc3c81ebf68467f19d7974e17f18844a3a48f
+F tool/mkpragmatab.tcl 62663c65d9191aada624a787e1ee3420f268a3c27999ad0ffb77a6918ddc1e52
 F tool/mkshellc.tcl 70a9978e363b0f3280ca9ce1c46d72563ff479c1930a12a7375e3881b7325712
 F tool/mksourceid.c 36aa8020014aed0836fd13c51d6dc9219b0df1761d6b5f58ff5b616211b079b9
 F tool/mkspeedsql.tcl a1a334d288f7adfe6e996f2e712becf076745c97
@@ -1857,10 +1860,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 6fb9a8fb85486a8fccc462856316ef523450c23a7a7a81c8dfb323fbe809f8f5
-R bf075f6bcc1758c5c1ecd13052997456
-T +bgcolor * #d0c0ff
-T +sym-release *
-T +sym-version-3.31.1 *
+P 97a18a5cd701848a9660385e31bffe2c397e3cfe57ccdb876f44d08c00d1d39a
+R bb18f5b4c4c1d8067c8d33e0ad339acb
 U drh
-Z 7c50801eed3eaef969e028ef5a0a641a
+Z 791b16818e473b4676673e9f9494706b
@@ -1 +1 @@
-3bfa9cc97da10598521b342961df8f5f68c7388fa117345eeb516eaa837bb4d6
+d7f18489978fdbbe3ab317485518cac91a75416ccef55898301afdd76d3b415b
@@ -256,9 +256,9 @@ static void openStatTable(
 ** share an instance of the following structure to hold their state
 ** information.
 */
-typedef struct Stat4Accum Stat4Accum;
-typedef struct Stat4Sample Stat4Sample;
-struct Stat4Sample {
+typedef struct StatAccum StatAccum;
+typedef struct StatSample StatSample;
+struct StatSample {
  tRowcnt *anEq;                  /* sqlite_stat4.nEq */
  tRowcnt *anDLt;                 /* sqlite_stat4.nDLt */
 #ifdef SQLITE_ENABLE_STAT4
@@ -273,27 +273,29 @@ struct Stat4Sample {
  u32 iHash;                      /* Tiebreaker hash */
 #endif
 };                                                    
-struct Stat4Accum {
+struct StatAccum {
+  sqlite3 *db;              /* Database connection, for malloc() */
  tRowcnt nRow;             /* Number of rows in the entire table */
-  tRowcnt nPSample;         /* How often to do a periodic sample */
  int nCol;                 /* Number of columns in index + pk/rowid */
  int nKeyCol;              /* Number of index columns w/o the pk/rowid */
+  StatSample current;       /* Current row as a StatSample */
+#ifdef SQLITE_ENABLE_STAT4
+  tRowcnt nPSample;         /* How often to do a periodic sample */
  int mxSample;             /* Maximum number of samples to accumulate */
-  Stat4Sample current;      /* Current row as a Stat4Sample */
  u32 iPrn;                 /* Pseudo-random number used for sampling */
-  Stat4Sample *aBest;       /* Array of nCol best samples */
+  StatSample *aBest;        /* Array of nCol best samples */
  int iMin;                 /* Index in a[] of entry with minimum score */
  int nSample;              /* Current number of samples */
  int nMaxEqZero;           /* Max leading 0 in anEq[] for any a[] entry */
  int iGet;                 /* Index of current sample accessed by stat_get() */
-  Stat4Sample *a;           /* Array of mxSample Stat4Sample objects */
-  sqlite3 *db;              /* Database connection, for malloc() */
+  StatSample *a;            /* Array of mxSample StatSample objects */
+#endif
 };

-/* Reclaim memory used by a Stat4Sample
+/* Reclaim memory used by a StatSample
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleClear(sqlite3 *db, Stat4Sample *p){
+static void sampleClear(sqlite3 *db, StatSample *p){
  assert( db!=0 );
  if( p->nRowid ){
    sqlite3DbFree(db, p->u.aRowid);
@@ -305,7 +307,7 @@ static void sampleClear(sqlite3 *db, Stat4Sample *p){
 /* Initialize the BLOB value of a ROWID
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){
+static void sampleSetRowid(sqlite3 *db, StatSample *p, int n, const u8 *pData){
  assert( db!=0 );
  if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
  p->u.aRowid = sqlite3DbMallocRawNN(db, n);
@@ -321,7 +323,7 @@ static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){
 /* Initialize the INTEGER value of a ROWID.
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){
+static void sampleSetRowidInt64(sqlite3 *db, StatSample *p, i64 iRowid){
  assert( db!=0 );
  if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
  p->nRowid = 0;
@@ -334,7 +336,7 @@ static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){
 ** Copy the contents of object (*pFrom) into (*pTo).
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){
+static void sampleCopy(StatAccum *p, StatSample *pTo, StatSample *pFrom){
  pTo->isPSample = pFrom->isPSample;
  pTo->iCol = pFrom->iCol;
  pTo->iHash = pFrom->iHash;
@@ -350,10 +352,10 @@ static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){
 #endif

 /*
-** Reclaim all memory of a Stat4Accum structure.
+** Reclaim all memory of a StatAccum structure.
 */
-static void stat4Destructor(void *pOld){
-  Stat4Accum *p = (Stat4Accum*)pOld;
+static void statAccumDestructor(void *pOld){
+  StatAccum *p = (StatAccum*)pOld;
 #ifdef SQLITE_ENABLE_STAT4
  int i;
  for(i=0; i<p->nCol; i++) sampleClear(p->db, p->aBest+i);
@@ -381,9 +383,9 @@ static void stat4Destructor(void *pOld){
 ** PRIMARY KEY of the table.  The covering index that implements the
 ** original WITHOUT ROWID table as N==K as a special case.
 **
-** This routine allocates the Stat4Accum object in heap memory. The return 
-** value is a pointer to the Stat4Accum object.  The datatype of the
-** return value is BLOB, but it is really just a pointer to the Stat4Accum
+** This routine allocates the StatAccum object in heap memory. The return 
+** value is a pointer to the StatAccum object.  The datatype of the
+** return value is BLOB, but it is really just a pointer to the StatAccum
 ** object.
 */
 static void statInit(
@@ -391,7 +393,7 @@ static void statInit(
  int argc,
  sqlite3_value **argv
 ){
-  Stat4Accum *p;
+  StatAccum *p;
  int nCol;                       /* Number of columns in index being sampled */
  int nKeyCol;                    /* Number of key columns */
  int nColUp;                     /* nCol rounded up for alignment */
@@ -410,13 +412,13 @@ static void statInit(
  assert( nKeyCol<=nCol );
  assert( nKeyCol>0 );

-  /* Allocate the space required for the Stat4Accum object */
+  /* Allocate the space required for the StatAccum object */
  n = sizeof(*p) 
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anEq */
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anDLt */
+    + sizeof(tRowcnt)*nColUp                  /* StatAccum.anEq */
+    + sizeof(tRowcnt)*nColUp                  /* StatAccum.anDLt */
 #ifdef SQLITE_ENABLE_STAT4
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anLt */
-    + sizeof(Stat4Sample)*(nCol+mxSample)     /* Stat4Accum.aBest[], a[] */
+    + sizeof(tRowcnt)*nColUp                  /* StatAccum.anLt */
+    + sizeof(StatSample)*(nCol+mxSample)      /* StatAccum.aBest[], a[] */
    + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample)
 #endif
  ;
@@ -445,8 +447,8 @@ static void statInit(
    p->current.anLt = &p->current.anEq[nColUp];
    p->iPrn = 0x689e962d*(u32)nCol ^ 0xd0944565*(u32)sqlite3_value_int(argv[2]);
  
-    /* Set up the Stat4Accum.a[] and aBest[] arrays */
-    p->a = (struct Stat4Sample*)&p->current.anLt[nColUp];
+    /* Set up the StatAccum.a[] and aBest[] arrays */
+    p->a = (struct StatSample*)&p->current.anLt[nColUp];
    p->aBest = &p->a[mxSample];
    pSpace = (u8*)(&p->a[mxSample+nCol]);
    for(i=0; i<(mxSample+nCol); i++){
@@ -466,7 +468,7 @@ static void statInit(
  ** only the pointer (the 2nd parameter) matters.  The size of the object
  ** (given by the 3rd parameter) is never used and can be any positive
  ** value. */
-  sqlite3_result_blob(context, p, sizeof(*p), stat4Destructor);
+  sqlite3_result_blob(context, p, sizeof(*p), statAccumDestructor);
 }
 static const FuncDef statInitFuncdef = {
  2+IsStat4,       /* nArg */
@@ -493,9 +495,9 @@ static const FuncDef statInitFuncdef = {
 ** the anEq[] array from pSample->anEq[pSample->iCol+1] onwards are valid. 
 */
 static int sampleIsBetterPost(
-  Stat4Accum *pAccum, 
-  Stat4Sample *pNew, 
-  Stat4Sample *pOld
+  StatAccum *pAccum, 
+  StatSample *pNew, 
+  StatSample *pOld
 ){
  int nCol = pAccum->nCol;
  int i;
@@ -517,9 +519,9 @@ static int sampleIsBetterPost(
 ** the anEq[] array from pSample->anEq[pSample->iCol] onwards are valid. 
 */
 static int sampleIsBetter(
-  Stat4Accum *pAccum, 
-  Stat4Sample *pNew, 
-  Stat4Sample *pOld
+  StatAccum *pAccum, 
+  StatSample *pNew, 
+  StatSample *pOld
 ){
  tRowcnt nEqNew = pNew->anEq[pNew->iCol];
  tRowcnt nEqOld = pOld->anEq[pOld->iCol];
@@ -539,21 +541,21 @@ static int sampleIsBetter(
 ** Copy the contents of sample *pNew into the p->a[] array. If necessary,
 ** remove the least desirable sample from p->a[] to make room.
 */
-static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
-  Stat4Sample *pSample = 0;
+static void sampleInsert(StatAccum *p, StatSample *pNew, int nEqZero){
+  StatSample *pSample = 0;
  int i;

  assert( IsStat4 || nEqZero==0 );

-  /* Stat4Accum.nMaxEqZero is set to the maximum number of leading 0
-  ** values in the anEq[] array of any sample in Stat4Accum.a[]. In
+  /* StatAccum.nMaxEqZero is set to the maximum number of leading 0
+  ** values in the anEq[] array of any sample in StatAccum.a[]. In
  ** other words, if nMaxEqZero is n, then it is guaranteed that there
-  ** are no samples with Stat4Sample.anEq[m]==0 for (m>=n). */
+  ** are no samples with StatSample.anEq[m]==0 for (m>=n). */
  if( nEqZero>p->nMaxEqZero ){
    p->nMaxEqZero = nEqZero;
  }
  if( pNew->isPSample==0 ){
-    Stat4Sample *pUpgrade = 0;
+    StatSample *pUpgrade = 0;
    assert( pNew->anEq[pNew->iCol]>0 );

    /* This sample is being added because the prefix that ends in column 
@@ -562,7 +564,7 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
    ** this one. Instead, upgrade the priority of the highest priority
    ** existing sample that shares this prefix.  */
    for(i=p->nSample-1; i>=0; i--){
-      Stat4Sample *pOld = &p->a[i];
+      StatSample *pOld = &p->a[i];
      if( pOld->anEq[pNew->iCol]==0 ){
        if( pOld->isPSample ) return;
        assert( pOld->iCol>pNew->iCol );
@@ -581,7 +583,7 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){

  /* If necessary, remove sample iMin to make room for the new sample. */
  if( p->nSample>=p->mxSample ){
-    Stat4Sample *pMin = &p->a[p->iMin];
+    StatSample *pMin = &p->a[p->iMin];
    tRowcnt *anEq = pMin->anEq;
    tRowcnt *anLt = pMin->anLt;
    tRowcnt *anDLt = pMin->anDLt;
@@ -624,20 +626,20 @@ find_new_min:
 }
 #endif /* SQLITE_ENABLE_STAT4 */

+#ifdef SQLITE_ENABLE_STAT4
 /*
 ** Field iChng of the index being scanned has changed. So at this point
 ** p->current contains a sample that reflects the previous row of the
 ** index. The value of anEq[iChng] and subsequent anEq[] elements are
 ** correct at this point.
 */
-static void samplePushPrevious(Stat4Accum *p, int iChng){
-#ifdef SQLITE_ENABLE_STAT4
+static void samplePushPrevious(StatAccum *p, int iChng){
  int i;

  /* Check if any samples from the aBest[] array should be pushed
  ** into IndexSample.a[] at this point.  */
  for(i=(p->nCol-2); i>=iChng; i--){
-    Stat4Sample *pBest = &p->aBest[i];
+    StatSample *pBest = &p->aBest[i];
    pBest->anEq[i] = p->current.anEq[i];
    if( p->nSample<p->mxSample || sampleIsBetter(p, pBest, &p->a[p->iMin]) ){
      sampleInsert(p, pBest, i);
@@ -661,25 +663,20 @@ static void samplePushPrevious(Stat4Accum *p, int iChng){
    }
    p->nMaxEqZero = iChng;
  }
-#endif
-
-#ifndef SQLITE_ENABLE_STAT4
-  UNUSED_PARAMETER( p );
-  UNUSED_PARAMETER( iChng );
-#endif
 }
+#endif /* SQLITE_ENABLE_STAT4 */

 /*
 ** Implementation of the stat_push SQL function:  stat_push(P,C,R)
 ** Arguments:
 **
-**    P     Pointer to the Stat4Accum object created by stat_init()
+**    P     Pointer to the StatAccum object created by stat_init()
 **    C     Index of left-most column to differ from previous row
 **    R     Rowid for the current row.  Might be a key record for
 **          WITHOUT ROWID tables.
 **
 ** This SQL function always returns NULL.  It's purpose it to accumulate
-** statistical data and/or samples in the Stat4Accum object about the
+** statistical data and/or samples in the StatAccum object about the
 ** index being analyzed.  The stat_get() SQL function will later be used to
 ** extract relevant information for constructing the sqlite_statN tables.
 **
@@ -693,7 +690,7 @@ static void statPush(
  int i;

  /* The three function arguments */
-  Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]);
+  StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]);
  int iChng = sqlite3_value_int(argv[1]);

  UNUSED_PARAMETER( argc );
@@ -706,7 +703,9 @@ static void statPush(
    for(i=0; i<p->nCol; i++) p->current.anEq[i] = 1;
  }else{
    /* Second and subsequent calls get processed here */
+#ifdef SQLITE_ENABLE_STAT4
    samplePushPrevious(p, iChng);
+#endif

    /* Update anDLt[], anLt[] and anEq[] to reflect the values that apply
    ** to the current row of the index. */
@@ -775,15 +774,15 @@ static const FuncDef statPushFuncdef = {
 /*
 ** Implementation of the stat_get(P,J) SQL function.  This routine is
 ** used to query statistical information that has been gathered into
-** the Stat4Accum object by prior calls to stat_push().  The P parameter
-** has type BLOB but it is really just a pointer to the Stat4Accum object.
+** the StatAccum object by prior calls to stat_push().  The P parameter
+** has type BLOB but it is really just a pointer to the StatAccum object.
 ** The content to returned is determined by the parameter J
 ** which is one of the STAT_GET_xxxx values defined above.
 **
 ** The stat_get(P,J) function is not available to generic SQL.  It is
 ** inserted as part of a manually constructed bytecode program.  (See
 ** the callStatGet() routine below.)  It is guaranteed that the P
-** parameter will always be a poiner to a Stat4Accum object, never a
+** parameter will always be a pointer to a StatAccum object, never a
 ** NULL.
 **
 ** If STAT4 is not enabled, then J is always
@@ -796,7 +795,7 @@ static void statGet(
  int argc,
  sqlite3_value **argv
 ){
-  Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]);
+  StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]);
 #ifdef SQLITE_ENABLE_STAT4
  /* STAT4 has a parameter on this routine. */
  int eCall = sqlite3_value_int(argv[1]);
@@ -817,7 +816,7 @@ static void statGet(
    ** the index. The first integer in the list is the total number of 
    ** entries in the index. There is one additional integer in the list 
    ** for each indexed column. This additional integer is an estimate of
-    ** the number of rows matched by a stabbing query on the index using
+    ** the number of rows matched by a equality query on the index using
    ** a key with the corresponding number of fields. In other words,
    ** if the index is on columns (a,b) and the sqlite_stat1 value is 
    ** "100 10 2", then SQLite estimates that:
@@ -860,7 +859,7 @@ static void statGet(
      p->iGet = 0;
    }
    if( p->iGet<p->nSample ){
-      Stat4Sample *pS = p->a + p->iGet;
+      StatSample *pS = p->a + p->iGet;
      if( pS->nRowid==0 ){
        sqlite3_result_int64(context, pS->u.iRowid);
      }else{
@@ -951,7 +950,7 @@ static void analyzeOneTable(
  int iDb;                     /* Index of database containing pTab */
  u8 needTableCnt = 1;         /* True to count the table */
  int regNewRowid = iMem++;    /* Rowid for the inserted record */
-  int regStat4 = iMem++;       /* Register to hold Stat4Accum object */
+  int regStat4 = iMem++;       /* Register to hold StatAccum object */
  int regChng = iMem++;        /* Index of changed index field */
 #ifdef SQLITE_ENABLE_STAT4
  int regRowid = iMem++;       /* Rowid argument passed to stat_push() */
@@ -187,43 +187,7 @@ static void attachFunc(
  if( rc==SQLITE_OK && pNew->zDbSName==0 ){
    rc = SQLITE_NOMEM_BKPT;
  }
-
-
-#ifdef SQLITE_HAS_CODEC
-  if( rc==SQLITE_OK ){
-    extern int sqlite3CodecAttach(sqlite3*, int, const void*, int);
-    extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*);
-    int nKey;
-    char *zKey;
-    int t = sqlite3_value_type(argv[2]);
-    switch( t ){
-      case SQLITE_INTEGER:
-      case SQLITE_FLOAT:
-        zErrDyn = sqlite3DbStrDup(db, "Invalid key value");
-        rc = SQLITE_ERROR;
-        break;
-        
-      case SQLITE_TEXT:
-      case SQLITE_BLOB:
-        nKey = sqlite3_value_bytes(argv[2]);
-        zKey = (char *)sqlite3_value_blob(argv[2]);
-        rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
-        break;
-
-      case SQLITE_NULL:
-        /* No key specified.  Use the key from URI filename, or if none,
-        ** use the key from the main database. */
-        if( sqlite3CodecQueryParameters(db, zName, zPath)==0 ){
-          sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey);
-          if( nKey || sqlite3BtreeGetOptimalReserve(db->aDb[0].pBt)>0 ){
-            rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
-          }
-        }
-        break;
-    }
-  }
-#endif
-  sqlite3_free( zPath );
+  sqlite3_free_filename( zPath );

  /* If the file was opened successfully, read the schema for the new database.
  ** If this fails, or if opening the file failed, then close the file and 
@@ -235,13 +235,6 @@ static int backupOnePage(
  int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest);
  const int nCopy = MIN(nSrcPgsz, nDestPgsz);
  const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz;
-#ifdef SQLITE_HAS_CODEC
-  /* Use BtreeGetReserveNoMutex() for the source b-tree, as although it is
-  ** guaranteed that the shared-mutex is held by this thread, handle
-  ** p->pSrc may not actually be the owner.  */
-  int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc);
-  int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest);
-#endif
  int rc = SQLITE_OK;
  i64 iOff;

@@ -258,26 +251,6 @@ static int backupOnePage(
    rc = SQLITE_READONLY;
  }

-#ifdef SQLITE_HAS_CODEC
-  /* Backup is not possible if the page size of the destination is changing
-  ** and a codec is in use.
-  */
-  if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){
-    rc = SQLITE_READONLY;
-  }
-
-  /* Backup is not possible if the number of bytes of reserve space differ
-  ** between source and destination.  If there is a difference, try to
-  ** fix the destination to agree with the source.  If that is not possible,
-  ** then the backup cannot proceed.
-  */
-  if( nSrcReserve!=nDestReserve ){
-    u32 newPgsz = nSrcPgsz;
-    rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve);
-    if( rc==SQLITE_OK && newPgsz!=(u32)nSrcPgsz ) rc = SQLITE_READONLY;
-  }
-#endif
-
  /* This loop runs once for each destination page spanned by the source 
  ** page. For each iteration, variable iOff is set to the byte offset
  ** of the destination page.
@@ -773,10 +746,6 @@ int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
  b.pDest = pTo;
  b.iNext = 1;

-#ifdef SQLITE_HAS_CODEC
-  sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom));
-#endif
-
  /* 0x7FFFFFFF is the hard limit for the number of pages in a database
  ** file. By passing this as the number of pages to copy to
  ** sqlite3_backup_step(), we can guarantee that the copy finishes 
@@ -611,7 +611,7 @@ static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
 */
 static int btreeGetHasContent(BtShared *pBt, Pgno pgno){
  Bitvec *p = pBt->pHasContent;
-  return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno)));
+  return p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTestNotNull(p, pgno));
 }

 /*
@@ -1449,7 +1449,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){
        int sz2 = 0;
        int sz = get2byte(&data[iFree+2]);
        int top = get2byte(&data[hdr+5]);
-        if( NEVER(top>=iFree) ){
+        if( top>=iFree ){
          return SQLITE_CORRUPT_PAGE(pPage);
        }
        if( iFree2 ){
@@ -1780,7 +1780,7 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
    ** so just extend the cell content area rather than create another
    ** freelist entry */
    if( iStart<x ) return SQLITE_CORRUPT_PAGE(pPage);
-    if( NEVER(iPtr!=hdr+1) ) return SQLITE_CORRUPT_PAGE(pPage);
+    if( iPtr!=hdr+1 ) return SQLITE_CORRUPT_PAGE(pPage);
    put2byte(&data[hdr+1], iFreeBlk);
    put2byte(&data[hdr+5], iEnd);
  }else{
@@ -2859,9 +2859,6 @@ int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
  BtShared *pBt = p->pBt;
  assert( nReserve>=-1 && nReserve<=255 );
  sqlite3BtreeEnter(p);
-#if SQLITE_HAS_CODEC
-  if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve;
-#endif
  if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
    sqlite3BtreeLeave(p);
    return SQLITE_READONLY;
@@ -2922,9 +2919,6 @@ int sqlite3BtreeGetOptimalReserve(Btree *p){
  int n;
  sqlite3BtreeEnter(p);
  n = sqlite3BtreeGetReserveNoMutex(p);
-#ifdef SQLITE_HAS_CODEC
-  if( n<p->pBt->optimalReserve ) n = p->pBt->optimalReserve;
-#endif
  sqlite3BtreeLeave(p);
  return n;
 }
@@ -417,9 +417,6 @@ struct BtShared {
 #endif
  u8 inTransaction;     /* Transaction state */
  u8 max1bytePayload;   /* Maximum first byte of cell for a 1-byte payload */
-#ifdef SQLITE_HAS_CODEC
-  u8 optimalReserve;    /* Desired amount of reserved space per page */
-#endif
  u16 btsFlags;         /* Boolean parameters.  See BTS_* macros below */
  u16 maxLocal;         /* Maximum local payload in non-LEAFDATA tables */
  u16 minLocal;         /* Minimum local payload in non-LEAFDATA tables */
@@ -2157,6 +2157,32 @@ int sqlite3ShadowTableName(sqlite3 *db, const char *zName){
 }
 #endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */

+#ifdef SQLITE_DEBUG
+/*
+** Mark all nodes of an expression as EP_Immutable, indicating that
+** they should not be changed.  Expressions attached to a table or
+** index definition are tagged this way to help ensure that we do
+** not pass them into code generator routines by mistake.
+*/
+static int markImmutableExprStep(Walker *pWalker, Expr *pExpr){
+  ExprSetVVAProperty(pExpr, EP_Immutable);
+  return WRC_Continue;
+}
+static void markExprListImmutable(ExprList *pList){
+  if( pList ){
+    Walker w;
+    memset(&w, 0, sizeof(w));
+    w.xExprCallback = markImmutableExprStep;
+    w.xSelectCallback = sqlite3SelectWalkNoop;
+    w.xSelectCallback2 = 0;
+    sqlite3WalkExprList(&w, pList);
+  }
+}
+#else
+#define markExprListImmutable(X)  /* no-op */
+#endif /* SQLITE_DEBUG */
+
+
 /*
 ** This routine is called to report the final ")" that terminates
 ** a CREATE TABLE statement.
@@ -2249,6 +2275,8 @@ void sqlite3EndTable(
      ** actually be used if PRAGMA writable_schema=ON is set. */
      sqlite3ExprListDelete(db, p->pCheck);
      p->pCheck = 0;
+    }else{
+      markExprListImmutable(p->pCheck);
    }
  }
 #endif /* !defined(SQLITE_OMIT_CHECK) */
@@ -163,17 +163,30 @@ CollSeq *sqlite3FindCollSeq(
  int create            /* True to create CollSeq if doesn't already exist */
 ){
  CollSeq *pColl;
+  assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
+  assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE );
  if( zName ){
    pColl = findCollSeqEntry(db, zName, create);
+    if( pColl ) pColl += enc-1;
  }else{
    pColl = db->pDfltColl;
  }
-  assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
-  assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE );
-  if( pColl ) pColl += enc-1;
  return pColl;
 }

+/*
+** Change the text encoding for a database connection. This means that
+** the pDfltColl must change as well.
+*/
+void sqlite3SetTextEncoding(sqlite3 *db, u8 enc){
+  assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE );
+  db->enc = enc;
+  /* EVIDENCE-OF: R-08308-17224 The default collating function for all
+  ** strings is BINARY. 
+  */
+  db->pDfltColl = sqlite3FindCollSeq(db, enc, sqlite3StrBINARY, 0);
+}
+
 /*
 ** This function is responsible for invoking the collation factory callback
 ** or substituting a collation sequence of a different encoding when the
@@ -355,9 +355,6 @@ static const char * const sqlite3azCompileOpt[] = {
 #if SQLITE_FTS5_NO_WITHOUT_ROWID
  "FTS5_NO_WITHOUT_ROWID",
 #endif
-#if SQLITE_HAS_CODEC
-  "HAS_CODEC",
-#endif
 #if HAVE_ISNAN || SQLITE_HAVE_ISNAN
  "HAVE_ISNAN",
 #endif
@@ -533,7 +533,9 @@ void sqlite3DeleteFrom(
                                 iTabCur, aToOpen, &iDataCur, &iIdxCur);
      assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur );
      assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 );
-      if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce);
+      if( eOnePass==ONEPASS_MULTI ){
+        sqlite3VdbeJumpHereOrPopInst(v, iAddrOnce);
+      }
    }
  
    /* Set up a loop over the rowids/primary-keys that were found in the
@@ -42,7 +42,7 @@ char sqlite3TableColumnAffinity(Table *pTab, int iCol){
 ** SELECT a AS b FROM t1 WHERE b;
 ** SELECT * FROM t1 WHERE (select a from t1);
 */
-char sqlite3ExprAffinity(Expr *pExpr){
+char sqlite3ExprAffinity(const Expr *pExpr){
  int op;
  while( ExprHasProperty(pExpr, EP_Skip) ){
    assert( pExpr->op==TK_COLLATE );
@@ -152,10 +152,10 @@ Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){
 ** COLLATE operators take first precedence.  Left operands take
 ** precedence over right operands.
 */
-CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
+CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr){
  sqlite3 *db = pParse->db;
  CollSeq *pColl = 0;
-  Expr *p = pExpr;
+  const Expr *p = pExpr;
  while( p ){
    int op = p->op;
    if( op==TK_REGISTER ) op = p->op2;
@@ -224,7 +224,7 @@ CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
 ** The sqlite3ExprCollSeq() routine works the same except that it
 ** returns NULL if there is no defined collation.
 */
-CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
+CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr){
  CollSeq *p = sqlite3ExprCollSeq(pParse, pExpr);
  if( p==0 ) p = pParse->db->pDfltColl;
  assert( p!=0 );
@@ -234,7 +234,7 @@ CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
 /*
 ** Return TRUE if the two expressions have equivalent collating sequences.
 */
-int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
+int sqlite3ExprCollSeqMatch(Parse *pParse, const Expr *pE1, const Expr *pE2){
  CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pE1);
  CollSeq *pColl2 = sqlite3ExprNNCollSeq(pParse, pE2);
  return sqlite3StrICmp(pColl1->zName, pColl2->zName)==0;
@@ -245,7 +245,7 @@ int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
 ** type affinity of the other operand.  This routine returns the
 ** type affinity that should be used for the comparison operator.
 */
-char sqlite3CompareAffinity(Expr *pExpr, char aff2){
+char sqlite3CompareAffinity(const Expr *pExpr, char aff2){
  char aff1 = sqlite3ExprAffinity(pExpr);
  if( aff1>SQLITE_AFF_NONE && aff2>SQLITE_AFF_NONE ){
    /* Both sides of the comparison are columns. If one has numeric
@@ -267,7 +267,7 @@ char sqlite3CompareAffinity(Expr *pExpr, char aff2){
 ** pExpr is a comparison operator.  Return the type affinity that should
 ** be applied to both operands prior to doing the comparison.
 */
-static char comparisonAffinity(Expr *pExpr){
+static char comparisonAffinity(const Expr *pExpr){
  char aff;
  assert( pExpr->op==TK_EQ || pExpr->op==TK_IN || pExpr->op==TK_LT ||
          pExpr->op==TK_GT || pExpr->op==TK_GE || pExpr->op==TK_LE ||
@@ -290,7 +290,7 @@ static char comparisonAffinity(Expr *pExpr){
 ** if the index with affinity idx_affinity may be used to implement
 ** the comparison in pExpr.
 */
-int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
+int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity){
  char aff = comparisonAffinity(pExpr);
  if( aff<SQLITE_AFF_TEXT ){
    return 1;
@@ -305,7 +305,11 @@ int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
 ** Return the P5 value that should be used for a binary comparison
 ** opcode (OP_Eq, OP_Ge etc.) used to compare pExpr1 and pExpr2.
 */
-static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){
+static u8 binaryCompareP5(
+  const Expr *pExpr1,   /* Left operand */
+  const Expr *pExpr2,   /* Right operand */
+  int jumpIfNull        /* Extra flags added to P5 */
+){
  u8 aff = (char)sqlite3ExprAffinity(pExpr2);
  aff = (u8)sqlite3CompareAffinity(pExpr1, aff) | (u8)jumpIfNull;
  return aff;
@@ -325,8 +329,8 @@ static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){
 */
 CollSeq *sqlite3BinaryCompareCollSeq(
  Parse *pParse, 
-  Expr *pLeft, 
-  Expr *pRight
+  const Expr *pLeft, 
+  const Expr *pRight
 ){
  CollSeq *pColl;
  assert( pLeft );
@@ -351,7 +355,7 @@ CollSeq *sqlite3BinaryCompareCollSeq(
 ** is reversed in the sqlite3BinaryCompareCollSeq() call so that the
 ** correct collating sequence is found.
 */
-CollSeq *sqlite3ExprCompareCollSeq(Parse *pParse, Expr *p){
+CollSeq *sqlite3ExprCompareCollSeq(Parse *pParse, const Expr *p){
  if( ExprHasProperty(p, EP_Commuted) ){
    return sqlite3BinaryCompareCollSeq(pParse, p->pRight, p->pLeft);
  }else{
@@ -594,6 +598,7 @@ static void codeVectorCompare(
  int addrDone = sqlite3VdbeMakeLabel(pParse);
  int isCommuted = ExprHasProperty(pExpr,EP_Commuted);

+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
  if( pParse->nErr ) return;
  if( nLeft!=sqlite3ExprVectorSize(pRight) ){
    sqlite3ErrorMsg(pParse, "row value misused");
@@ -1206,7 +1211,7 @@ static int dupedExprStructSize(Expr *p, int flags){
    assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
    assert( !ExprHasProperty(p, EP_FromJoin) ); 
    assert( !ExprHasProperty(p, EP_MemToken) );
-    assert( !ExprHasProperty(p, EP_NoReduce) );
+    assert( !ExprHasVVAProperty(p, EP_NoReduce) );
    if( p->pLeft || p->x.pList ){
      nSize = EXPR_REDUCEDSIZE | EP_Reduced;
    }else{
@@ -1311,6 +1316,10 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){
    pNew->flags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken);
    pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly);
    pNew->flags |= staticFlag;
+    ExprClearVVAProperties(pNew);
+    if( dupFlags ){
+      ExprSetVVAProperty(pNew, EP_Immutable);
+    }

    /* Copy the p->u.zToken string, if any. */
    if( nToken ){
@@ -2087,7 +2096,7 @@ int sqlite3ExprIsConstant(Expr *p){
 **
 ** When this routine returns true, it indicates that the expression
 ** can be added to the pParse->pConstExpr list and evaluated once when
-** the prepared statement starts up.  See sqlite3ExprCodeAtInit().
+** the prepared statement starts up.  See sqlite3ExprCodeRunJustOnce().
 */
 int sqlite3ExprIsConstantNotJoin(Expr *p){
  return exprIsConst(p, 2, 0);
@@ -2850,6 +2859,7 @@ void sqlite3CodeRhsOfIN(

    /* Begin coding the subroutine */
    ExprSetProperty(pExpr, EP_Subrtn);
+    assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) );
    pExpr->y.sub.regReturn = ++pParse->nMem;
    pExpr->y.sub.iAddr =
      sqlite3VdbeAddOp2(v, OP_Integer, 0, pExpr->y.sub.regReturn) + 1;
@@ -3170,6 +3180,7 @@ static void sqlite3ExprCodeIN(
  int addrTop;          /* Top of the step-6 loop */ 
  int iTab = 0;         /* Index to use */

+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
  pLeft = pExpr->pLeft;
  if( sqlite3ExprCheckIN(pParse, pExpr) ) return;
  zAff = exprINAffinity(pParse, pExpr);
@@ -3496,7 +3507,7 @@ void sqlite3ExprCodeGeneratedColumn(
  }else{
    iAddr = 0;
  }
-  sqlite3ExprCode(pParse, pCol->pDflt, regOut);
+  sqlite3ExprCodeCopy(pParse, pCol->pDflt, regOut);
  if( pCol->affinity>=SQLITE_AFF_TEXT ){
    sqlite3VdbeAddOp4(v, OP_Affinity, regOut, 1, 0, &pCol->affinity, 1);
  }
@@ -3637,6 +3648,16 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){
  return iResult;
 }

+/*
+** If the last opcode is a OP_Copy, then set the do-not-merge flag (p5)
+** so that a subsequent copy will not be merged into this one.
+*/
+static void setDoNotMergeFlagOnCopy(Vdbe *v){
+  if( sqlite3VdbeGetOp(v, -1)->opcode==OP_Copy ){
+    sqlite3VdbeChangeP5(v, 1);  /* Tag trailing OP_Copy as not mergable */
+  }
+}
+
 /*
 ** Generate code to implement special SQL functions that are implemented
 ** in-line rather than by using the usual callbacks.
@@ -3668,9 +3689,7 @@ static int exprCodeInlineFunction(
        VdbeCoverage(v);
        sqlite3ExprCode(pParse, pFarg->a[i].pExpr, target);
      }
-      if( sqlite3VdbeGetOp(v, -1)->opcode==OP_Copy ){
-        sqlite3VdbeChangeP5(v, 1);  /* Tag trailing OP_Copy as not mergable */
-      }
+      setDoNotMergeFlagOnCopy(v);
      sqlite3VdbeResolveLabel(v, endCoalesce);
      break;
    }
@@ -3772,6 +3791,7 @@ expr_code_doover:
  if( pExpr==0 ){
    op = TK_NULL;
  }else{
+    assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
    op = pExpr->op;
  }
  switch( op ){
@@ -3782,8 +3802,17 @@ expr_code_doover:
        assert( pCol->iMem>0 );
        return pCol->iMem;
      }else if( pAggInfo->useSortingIdx ){
+        Table *pTab = pCol->pTab;
        sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab,
                              pCol->iSorterColumn, target);
+        if( pCol->iColumn<0 ){
+          VdbeComment((v,"%s.rowid",pTab->zName));
+        }else{
+          VdbeComment((v,"%s.%s",pTab->zName,pTab->aCol[pCol->iColumn].zName));
+          if( pTab->aCol[pCol->iColumn].affinity==SQLITE_AFF_REAL ){
+            sqlite3VdbeAddOp1(v, OP_RealAffinity, target);
+          }
+        }
        return target;
      }
      /* Otherwise, fall thru into the TK_COLUMN case */
@@ -4026,6 +4055,7 @@ expr_code_doover:
        tempX.op = TK_INTEGER;
        tempX.flags = EP_IntValue|EP_TokenOnly;
        tempX.u.iValue = 0;
+        ExprClearVVAProperties(&tempX);
        r1 = sqlite3ExprCodeTemp(pParse, &tempX, &regFree1);
        r2 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, &regFree2);
        sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target);
@@ -4097,16 +4127,13 @@ expr_code_doover:
 #endif

      if( ConstFactorOk(pParse) && sqlite3ExprIsConstantNotJoin(pExpr) ){
-        /* SQL functions can be expensive. So try to move constant functions
-        ** out of the inner loop, even if that means an extra OP_Copy. */
-        return sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+        /* SQL functions can be expensive. So try to avoid running them
+        ** multiple times if we know they always give the same result */
+        return sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
      }
      assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
-      if( ExprHasProperty(pExpr, EP_TokenOnly) ){
-        pFarg = 0;
-      }else{
-        pFarg = pExpr->x.pList;
-      }
+      assert( !ExprHasProperty(pExpr, EP_TokenOnly) );
+      pFarg = pExpr->x.pList;
      nFarg = pFarg ? pFarg->nExpr : 0;
      assert( !ExprHasProperty(pExpr, EP_IntValue) );
      zId = pExpr->u.zToken;
@@ -4441,6 +4468,7 @@ expr_code_doover:
        sqlite3VdbeAddOp2(v, OP_Null, 0, target);
      }
      sqlite3ExprDelete(db, pDel);
+      setDoNotMergeFlagOnCopy(v);
      sqlite3VdbeResolveLabel(v, endLabel);
      break;
    }
@@ -4479,15 +4507,23 @@ expr_code_doover:
 }

 /*
-** Factor out the code of the given expression to initialization time.
+** Generate code that will evaluate expression pExpr just one time
+** per prepared statement execution.
+**
+** If the expression uses functions (that might throw an exception) then
+** guard them with an OP_Once opcode to ensure that the code is only executed
+** once. If no functions are involved, then factor the code out and put it at
+** the end of the prepared statement in the initialization section.
 **
 ** If regDest>=0 then the result is always stored in that register and the
 ** result is not reusable.  If regDest<0 then this routine is free to 
 ** store the value whereever it wants.  The register where the expression 
-** is stored is returned.  When regDest<0, two identical expressions will
-** code to the same register.
+** is stored is returned.  When regDest<0, two identical expressions might
+** code to the same register, if they do not contain function calls and hence
+** are factored out into the initialization section at the end of the
+** prepared statement.
 */
-int sqlite3ExprCodeAtInit(
+int sqlite3ExprCodeRunJustOnce(
  Parse *pParse,    /* Parsing context */
  Expr *pExpr,      /* The expression to code when the VDBE initializes */
  int regDest       /* Store the value in this register */
@@ -4505,14 +4541,29 @@ int sqlite3ExprCodeAtInit(
    }
  }
  pExpr = sqlite3ExprDup(pParse->db, pExpr, 0);
-  p = sqlite3ExprListAppend(pParse, p, pExpr);
-  if( p ){
-     struct ExprList_item *pItem = &p->a[p->nExpr-1];
-     pItem->reusable = regDest<0;
-     if( regDest<0 ) regDest = ++pParse->nMem;
-     pItem->u.iConstExprReg = regDest;
+  if( pExpr!=0 && ExprHasProperty(pExpr, EP_HasFunc) ){
+    Vdbe *v = pParse->pVdbe;
+    int addr;
+    assert( v );
+    addr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
+    pParse->okConstFactor = 0;
+    if( !pParse->db->mallocFailed ){
+      if( regDest<0 ) regDest = ++pParse->nMem;
+      sqlite3ExprCode(pParse, pExpr, regDest);
+    }
+    pParse->okConstFactor = 1;
+    sqlite3ExprDelete(pParse->db, pExpr);
+    sqlite3VdbeJumpHere(v, addr);
+  }else{
+    p = sqlite3ExprListAppend(pParse, p, pExpr);
+    if( p ){
+       struct ExprList_item *pItem = &p->a[p->nExpr-1];
+       pItem->reusable = regDest<0;
+       if( regDest<0 ) regDest = ++pParse->nMem;
+       pItem->u.iConstExprReg = regDest;
+    }
+    pParse->pConstExpr = p;
  }
-  pParse->pConstExpr = p;
  return regDest;
 }

@@ -4537,7 +4588,7 @@ int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
   && sqlite3ExprIsConstantNotJoin(pExpr)
  ){
    *pReg  = 0;
-    r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+    r2 = sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
  }else{
    int r1 = sqlite3GetTempReg(pParse);
    r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1);
@@ -4559,6 +4610,7 @@ int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
 void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){
  int inReg;

+  assert( pExpr==0 || !ExprHasVVAProperty(pExpr,EP_Immutable) );
  assert( target>0 && target<=pParse->nMem );
  inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
  assert( pParse->pVdbe!=0 || pParse->db->mallocFailed );
@@ -4593,9 +4645,9 @@ void sqlite3ExprCodeCopy(Parse *pParse, Expr *pExpr, int target){
 */
 void sqlite3ExprCodeFactorable(Parse *pParse, Expr *pExpr, int target){
  if( pParse->okConstFactor && sqlite3ExprIsConstantNotJoin(pExpr) ){
-    sqlite3ExprCodeAtInit(pParse, pExpr, target);
+    sqlite3ExprCodeRunJustOnce(pParse, pExpr, target);
  }else{
-    sqlite3ExprCode(pParse, pExpr, target);
+    sqlite3ExprCodeCopy(pParse, pExpr, target);
  }
 }

@@ -4653,7 +4705,7 @@ int sqlite3ExprCodeExprList(
    }else if( (flags & SQLITE_ECEL_FACTOR)!=0
           && sqlite3ExprIsConstantNotJoin(pExpr)
    ){
-      sqlite3ExprCodeAtInit(pParse, pExpr, target+i);
+      sqlite3ExprCodeRunJustOnce(pParse, pExpr, target+i);
    }else{
      int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i);
      if( inReg!=target+i ){
@@ -4776,6 +4828,7 @@ void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int jumpIfNull){
  assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
  if( NEVER(v==0) )     return;  /* Existence of VDBE checked by caller */
  if( NEVER(pExpr==0) ) return;  /* No way this can happen */
+  assert( !ExprHasVVAProperty(pExpr, EP_Immutable) );
  op = pExpr->op;
  switch( op ){
    case TK_AND:
@@ -4917,6 +4970,7 @@ void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int jumpIfNull){
  assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
  if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */
  if( pExpr==0 )    return;
+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );

  /* The value of pExpr->op and op are related as follows:
  **
@@ -5200,7 +5254,7 @@ int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTab){
  }
  if( (pA->flags & (EP_Distinct|EP_Commuted))
     != (pB->flags & (EP_Distinct|EP_Commuted)) ) return 2;
-  if( (combinedFlags & EP_TokenOnly)==0 ){
+  if( ALWAYS((combinedFlags & EP_TokenOnly)==0) ){
    if( combinedFlags & EP_xIsSelect ) return 2;
    if( (combinedFlags & EP_FixedCol)==0
     && sqlite3ExprCompare(pParse, pA->pLeft, pB->pLeft, iTab) ) return 2;
@@ -5208,24 +5262,10 @@ int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTab){
    if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2;
    if( pA->op!=TK_STRING
     && pA->op!=TK_TRUEFALSE
-     && (combinedFlags & EP_Reduced)==0
+     && ALWAYS((combinedFlags & EP_Reduced)==0)
    ){
      if( pA->iColumn!=pB->iColumn ) return 2;
-      if( pA->op2!=pB->op2 ){
-        if( pA->op==TK_TRUTH ) return 2;
-        if( pA->op==TK_FUNCTION && iTab<0 ){
-          /* Ex: CREATE TABLE t1(a CHECK( a<julianday('now') ));
-          **     INSERT INTO t1(a) VALUES(julianday('now')+10);
-          ** Without this test, sqlite3ExprCodeAtInit() will run on the
-          ** the julianday() of INSERT first, and remember that expression.
-          ** Then sqlite3ExprCodeInit() will see the julianday() in the CHECK
-          ** constraint as redundant, reusing the one from the INSERT, even
-          ** though the julianday() in INSERT lacks the critical NC_IsCheck
-          ** flag.  See ticket [830277d9db6c3ba1] (2019-10-30)
-          */
-          return 2;
-        }
-      }
+      if( pA->op2!=pB->op2 && pA->op==TK_TRUTH ) return 2;
      if( pA->op!=TK_IN && pA->iTable!=pB->iTable && pA->iTable!=iTab ){
        return 2;
      }
@@ -5463,19 +5503,25 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
    case TK_LT:
    case TK_LE:
    case TK_GT:
-    case TK_GE:
+    case TK_GE: {
+      Expr *pLeft = pExpr->pLeft;
+      Expr *pRight = pExpr->pRight;
      testcase( pExpr->op==TK_EQ );
      testcase( pExpr->op==TK_NE );
      testcase( pExpr->op==TK_LT );
      testcase( pExpr->op==TK_LE );
      testcase( pExpr->op==TK_GT );
      testcase( pExpr->op==TK_GE );
-      if( (pExpr->pLeft->op==TK_COLUMN && IsVirtual(pExpr->pLeft->y.pTab))
-       || (pExpr->pRight->op==TK_COLUMN && IsVirtual(pExpr->pRight->y.pTab))
+      /* The y.pTab=0 assignment in wherecode.c always happens after the
+      ** impliesNotNullRow() test */
+      if( (pLeft->op==TK_COLUMN && ALWAYS(pLeft->y.pTab!=0)
+                               && IsVirtual(pLeft->y.pTab))
+       || (pRight->op==TK_COLUMN && ALWAYS(pRight->y.pTab!=0)
+                               && IsVirtual(pRight->y.pTab))
      ){
-       return WRC_Prune;
+        return WRC_Prune;
      }
-
+    }
    default:
      return WRC_Continue;
  }
@@ -658,7 +658,7 @@ static void fkScanChildren(
  /* Clean up the WHERE clause constructed above. */
  sqlite3ExprDelete(db, pWhere);
  if( iFkIfZero ){
-    sqlite3VdbeJumpHere(v, iFkIfZero);
+    sqlite3VdbeJumpHereOrPopInst(v, iFkIfZero);
  }
 }

@@ -135,16 +135,9 @@ const unsigned char sqlite3CtypeMap[256] = {
 ** EVIDENCE-OF: R-43642-56306 By default, URI handling is globally
 ** disabled. The default value may be changed by compiling with the
 ** SQLITE_USE_URI symbol defined.
-**
-** URI filenames are enabled by default if SQLITE_HAS_CODEC is
-** enabled.
 */
 #ifndef SQLITE_USE_URI
-# ifdef SQLITE_HAS_CODEC
-#  define SQLITE_USE_URI 1
-# else
-#  define SQLITE_USE_URI 0
-# endif
+# define SQLITE_USE_URI 0
 #endif

 /* EVIDENCE-OF: R-38720-18127 The default setting is determined by the
@@ -1606,7 +1606,7 @@ void sqlite3GenerateConstraintChecks(
            VdbeCoverage(v);
            assert( (pCol->colFlags & COLFLAG_GENERATED)==0 );
            nSeenReplace++;
-            sqlite3ExprCode(pParse, pCol->pDflt, iReg);
+            sqlite3ExprCodeCopy(pParse, pCol->pDflt, iReg);
            sqlite3VdbeJumpHere(v, addr1);
            break;
          }
@@ -1661,6 +1661,7 @@ void sqlite3GenerateConstraintChecks(
    onError = overrideError!=OE_Default ? overrideError : OE_Abort;
    for(i=0; i<pCheck->nExpr; i++){
      int allOk;
+      Expr *pCopy;
      Expr *pExpr = pCheck->a[i].pExpr;
      if( aiChng
       && !sqlite3ExprReferencesUpdatedColumn(pExpr, aiChng, pkChng)
@@ -1669,9 +1670,17 @@ void sqlite3GenerateConstraintChecks(
        ** updated so there is no point it verifying the check constraint */
        continue;
      }
+      if( bAffinityDone==0 ){
+        sqlite3TableAffinity(v, pTab, regNewData+1);
+        bAffinityDone = 1;
+      }
      allOk = sqlite3VdbeMakeLabel(pParse);
      sqlite3VdbeVerifyAbortable(v, onError);
-      sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL);
+      pCopy = sqlite3ExprDup(db, pExpr, 0);
+      if( !db->mallocFailed ){
+        sqlite3ExprIfTrue(pParse, pCopy, allOk, SQLITE_JUMPIFNULL);
+      }
+      sqlite3ExprDelete(db, pCopy);
      if( onError==OE_Ignore ){
        sqlite3VdbeGoto(v, ignoreDest);
      }else{
@@ -2170,12 +2179,14 @@ void sqlite3GenerateConstraintChecks(
            x = *sqlite3VdbeGetOp(v, addrConflictCk);
            if( x.opcode!=OP_IdxRowid ){
              int p2;      /* New P2 value for copied conflict check opcode */
+              const char *zP4;
              if( sqlite3OpcodeProperty[x.opcode]&OPFLG_JUMP ){
                p2 = lblRecheckOk;
              }else{
                p2 = x.p2;
              }
-              sqlite3VdbeAddOp4(v, x.opcode, x.p1, p2, x.p3, x.p4.z, x.p4type);
+              zP4 = x.p4type==P4_INT32 ? SQLITE_INT_TO_PTR(x.p4.i) : x.p4.z;
+              sqlite3VdbeAddOp4(v, x.opcode, x.p1, p2, x.p3, zP4, x.p4type);
              sqlite3VdbeChangeP5(v, x.p5);
              VdbeCoverageIf(v, p2!=x.p2);
            }
@@ -2783,14 +2794,13 @@ static int xferOptimization(
      addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid);
      assert( (pDest->tabFlags & TF_Autoincrement)==0 );
    }
-    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
    if( db->mDbFlags & DBFLAG_Vacuum ){
      sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest);
-      insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|
-                           OPFLAG_APPEND|OPFLAG_USESEEKRESULT;
+      insFlags = OPFLAG_APPEND|OPFLAG_USESEEKRESULT;
    }else{
      insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND;
    }
+    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
    sqlite3VdbeAddOp4(v, OP_Insert, iDest, regData, regRowid,
                      (char*)pDest, P4_TABLE);
    sqlite3VdbeChangeP5(v, insFlags);
@@ -2815,7 +2825,6 @@ static int xferOptimization(
    sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR);
    VdbeComment((v, "%s", pDestIdx->zName));
    addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v);
-    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
    if( db->mDbFlags & DBFLAG_Vacuum ){
      /* This INSERT command is part of a VACUUM operation, which guarantees
      ** that the destination table is empty. If all indexed columns use
@@ -2839,10 +2848,10 @@ static int xferOptimization(
        idxInsFlags = OPFLAG_USESEEKRESULT;
        sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest);
      }
-    }
-    if( !HasRowid(pSrc) && pDestIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){
+    }else if( !HasRowid(pSrc) && pDestIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){
      idxInsFlags |= OPFLAG_NCHANGE;
    }
+    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
    sqlite3VdbeAddOp2(v, OP_IdxInsert, iDest, regData);
    sqlite3VdbeChangeP5(v, idxInsFlags|OPFLAG_APPEND);
    sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); VdbeCoverage(v);
@@ -474,6 +474,9 @@ static const sqlite3_api_routines sqlite3Apis = {
  sqlite3_filename_database,
  sqlite3_filename_journal,
  sqlite3_filename_wal,
+  /* Version 3.32.0 and later */
+  sqlite3_create_filename,
+  sqlite3_free_filename,
 };

 /*
@@ -161,7 +161,10 @@ int sqlite3_initialize(void){
  ** must be complete.  So isInit must not be set until the very end
  ** of this routine.
  */
-  if( sqlite3GlobalConfig.isInit ) return SQLITE_OK;
+  if( sqlite3GlobalConfig.isInit ){
+    sqlite3MemoryBarrier();
+    return SQLITE_OK;
+  }

  /* Make sure the mutex subsystem is initialized.  If unable to 
  ** initialize the mutex subsystem, return early with the error.
@@ -2750,9 +2753,11 @@ int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
 **
 ** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to
 ** the VFS that should be used to open the database file. *pzFile is set to
-** point to a buffer containing the name of the file to open. It is the 
-** responsibility of the caller to eventually call sqlite3_free() to release
-** this buffer.
+** point to a buffer containing the name of the file to open.  The value
+** stored in *pzFile is a database name acceptable to sqlite3_uri_parameter()
+** and is in the same format as names created using sqlite3_create_filename().
+** The caller must invoke sqlite3_free_filename() (not sqlite3_free()!) on
+** the value returned in *pzFile to avoid a memory leak.
 **
 ** If an error occurs, then an SQLite error code is returned and *pzErrMsg
 ** may be set to point to a buffer containing an English language error 
@@ -2784,7 +2789,7 @@ int sqlite3ParseUri(
    int eState;                   /* Parser state when parsing URI */
    int iIn;                      /* Input character index */
    int iOut = 0;                 /* Output character index */
-    u64 nByte = nUri+2;           /* Bytes of space to allocate */
+    u64 nByte = nUri+8;           /* Bytes of space to allocate */

    /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen 
    ** method that there may be extra parameters following the file-name.  */
@@ -2794,6 +2799,9 @@ int sqlite3ParseUri(
    zFile = sqlite3_malloc64(nByte);
    if( !zFile ) return SQLITE_NOMEM_BKPT;

+    memset(zFile, 0, 4);  /* 4-byte of 0x00 is the start of DB name marker */
+    zFile += 4;
+
    iIn = 5;
 #ifdef SQLITE_ALLOW_URI_AUTHORITY
    if( strncmp(zUri+5, "///", 3)==0 ){
@@ -2883,8 +2891,7 @@ int sqlite3ParseUri(
      zFile[iOut++] = c;
    }
    if( eState==1 ) zFile[iOut++] = '\0';
-    zFile[iOut++] = '\0';
-    zFile[iOut++] = '\0';
+    memset(zFile+iOut, 0, 4); /* end-of-options + empty journal filenames */

    /* Check if there were any options specified that should be interpreted 
    ** here. Options that are interpreted here include "vfs" and those that
@@ -2964,13 +2971,14 @@ int sqlite3ParseUri(
    }

  }else{
-    zFile = sqlite3_malloc64(nUri+2);
+    zFile = sqlite3_malloc64(nUri+8);
    if( !zFile ) return SQLITE_NOMEM_BKPT;
+    memset(zFile, 0, 4);
+    zFile += 4;
    if( nUri ){
      memcpy(zFile, zUri, nUri);
    }
-    zFile[nUri] = '\0';
-    zFile[nUri+1] = '\0';
+    memset(zFile+nUri, 0, 4);
    flags &= ~SQLITE_OPEN_URI;
  }

@@ -2981,7 +2989,7 @@ int sqlite3ParseUri(
  }
 parse_uri_out:
  if( rc!=SQLITE_OK ){
-    sqlite3_free(zFile);
+    sqlite3_free_filename(zFile);
    zFile = 0;
  }
  *pFlags = flags;
@@ -2989,39 +2997,21 @@ int sqlite3ParseUri(
  return rc;
 }

-#if defined(SQLITE_HAS_CODEC)
 /*
-** Process URI filename query parameters relevant to the SQLite Encryption
-** Extension.  Return true if any of the relevant query parameters are
-** seen and return false if not.
+** This routine does the core work of extracting URI parameters from a
+** database filename for the sqlite3_uri_parameter() interface.
 */
-int sqlite3CodecQueryParameters(
-  sqlite3 *db,           /* Database connection */
-  const char *zDb,       /* Which schema is being created/attached */
-  const char *zUri       /* URI filename */
-){
-  const char *zKey;
-  if( (zKey = sqlite3_uri_parameter(zUri, "hexkey"))!=0 && zKey[0] ){
-    u8 iByte;
-    int i;
-    char zDecoded[40];
-    for(i=0, iByte=0; i<sizeof(zDecoded)*2 && sqlite3Isxdigit(zKey[i]); i++){
-      iByte = (iByte<<4) + sqlite3HexToInt(zKey[i]);
-      if( (i&1)!=0 ) zDecoded[i/2] = iByte;
-    }
-    sqlite3_key_v2(db, zDb, zDecoded, i/2);
-    return 1;
-  }else if( (zKey = sqlite3_uri_parameter(zUri, "key"))!=0 ){
-    sqlite3_key_v2(db, zDb, zKey, sqlite3Strlen30(zKey));
-    return 1;
-  }else if( (zKey = sqlite3_uri_parameter(zUri, "textkey"))!=0 ){
-    sqlite3_key_v2(db, zDb, zKey, -1);
-    return 1;
-  }else{
-    return 0;
+static const char *uriParameter(const char *zFilename, const char *zParam){
+  zFilename += sqlite3Strlen30(zFilename) + 1;
+  while( zFilename[0] ){
+    int x = strcmp(zFilename, zParam);
+    zFilename += sqlite3Strlen30(zFilename) + 1;
+    if( x==0 ) return zFilename;
+    zFilename += sqlite3Strlen30(zFilename) + 1;
  }
+  return 0;
 }
-#endif
+


 /*
@@ -3209,11 +3199,6 @@ static int openDatabase(
  if( db->mallocFailed ){
    goto opendb_out;
  }
-  /* EVIDENCE-OF: R-08308-17224 The default collating function for all
-  ** strings is BINARY. 
-  */
-  db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, sqlite3StrBINARY, 0);
-  assert( db->pDfltColl!=0 );

  /* Parse the filename/URI argument
  **
@@ -3258,7 +3243,9 @@ static int openDatabase(
  }
  sqlite3BtreeEnter(db->aDb[0].pBt);
  db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt);
-  if( !db->mallocFailed ) ENC(db) = SCHEMA_ENC(db);
+  if( !db->mallocFailed ){
+    sqlite3SetTextEncoding(db, SCHEMA_ENC(db));
+  }
  sqlite3BtreeLeave(db->aDb[0].pBt);
  db->aDb[1].pSchema = sqlite3SchemaGet(db, 0);

@@ -3406,10 +3393,7 @@ opendb_out:
    sqlite3GlobalConfig.xSqllog(pArg, db, zFilename, 0);
  }
 #endif
-#if defined(SQLITE_HAS_CODEC)
-  if( rc==SQLITE_OK ) sqlite3CodecQueryParameters(db, 0, zOpen);
-#endif
-  sqlite3_free(zOpen);
+  sqlite3_free_filename(zOpen);
  return rc & 0xff;
 }

@@ -3636,13 +3620,15 @@ int sqlite3CantopenError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return sqlite3ReportError(SQLITE_CANTOPEN, lineno, "cannot open file");
 }
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO)
 int sqlite3CorruptPgnoError(int lineno, Pgno pgno){
  char zMsg[100];
  sqlite3_snprintf(sizeof(zMsg), zMsg, "database corruption page %d", pgno);
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return sqlite3ReportError(SQLITE_CORRUPT, lineno, zMsg);
 }
+#endif
+#ifdef SQLITE_DEBUG
 int sqlite3NomemError(int lineno){
  testcase( sqlite3GlobalConfig.xLog!=0 );
  return sqlite3ReportError(SQLITE_NOMEM, lineno, "OOM");
@@ -4258,6 +4244,68 @@ static const char *databaseName(const char *zName){
  return zName;
 }

+/*
+** Append text z[] to the end of p[].  Return a pointer to the first
+** character after then zero terminator on the new text in p[].
+*/
+static char *appendText(char *p, const char *z){
+  size_t n = strlen(z);
+  memcpy(p, z, n+1);
+  return p+n+1;
+}
+
+/*
+** Allocate memory to hold names for a database, journal file, WAL file,
+** and query parameters.  The pointer returned is valid for use by
+** sqlite3_filename_database() and sqlite3_uri_parameter() and related
+** functions.
+**
+** Memory layout must be compatible with that generated by the pager
+** and expected by sqlite3_uri_parameter() and databaseName().
+*/
+char *sqlite3_create_filename(
+  const char *zDatabase,
+  const char *zJournal,
+  const char *zWal,
+  int nParam,
+  const char **azParam
+){
+  sqlite3_int64 nByte;
+  int i;
+  char *pResult, *p;
+  nByte = strlen(zDatabase) + strlen(zJournal) + strlen(zWal) + 10;
+  for(i=0; i<nParam*2; i++){
+    nByte += strlen(azParam[i])+1;
+  }
+  pResult = p = sqlite3_malloc64( nByte );
+  if( p==0 ) return 0;
+  memset(p, 0, 4);
+  p += 4;
+  p = appendText(p, zDatabase);
+  for(i=0; i<nParam*2; i++){
+    p = appendText(p, azParam[i]);
+  }
+  *(p++) = 0;
+  p = appendText(p, zJournal);
+  p = appendText(p, zWal);
+  *(p++) = 0;
+  *(p++) = 0;
+  assert( (sqlite3_int64)(p - pResult)==nByte );
+  return pResult + 4;
+}
+
+/*
+** Free memory obtained from sqlite3_create_filename().  It is a severe
+** error to call this routine with any parameter other than a pointer
+** previously obtained from sqlite3_create_filename() or a NULL pointer.
+*/
+void sqlite3_free_filename(char *p){
+  if( p==0 ) return;
+  p = (char*)databaseName(p);
+  sqlite3_free(p - 4);
+}
+
+
 /*
 ** This is a utility routine, useful to VFS implementations, that checks
 ** to see if a database file was a URI that contained a specific query 
@@ -4272,14 +4320,7 @@ static const char *databaseName(const char *zName){
 const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){
  if( zFilename==0 || zParam==0 ) return 0;
  zFilename = databaseName(zFilename);
-  zFilename += sqlite3Strlen30(zFilename) + 1;
-  while( zFilename[0] ){
-    int x = strcmp(zFilename, zParam);
-    zFilename += sqlite3Strlen30(zFilename) + 1;
-    if( x==0 ) return zFilename;
-    zFilename += sqlite3Strlen30(zFilename) + 1;
-  }
-  return 0;
+  return uriParameter(zFilename, zParam);
 }

 /*
@@ -4333,7 +4374,6 @@ sqlite3_int64 sqlite3_uri_int64(
 */
 const char *sqlite3_filename_database(const char *zFilename){
  return databaseName(zFilename);
-  return sqlite3_uri_parameter(zFilename - 3, "\003");
 }
 const char *sqlite3_filename_journal(const char *zFilename){
  zFilename = databaseName(zFilename);
@@ -254,6 +254,7 @@ int sqlite3MutexInit(void){
  GLOBAL(int, mutexIsInit) = 1;
 #endif

+  sqlite3MemoryBarrier();
  return rc;
 }

@@ -689,7 +689,7 @@ static int robust_open(const char *z, int f, mode_t m){
    sqlite3_log(SQLITE_WARNING, 
                "attempt to open \"%s\" as file descriptor %d", z, fd);
    fd = -1;
-    if( osOpen("/dev/null", f, m)<0 ) break;
+    if( osOpen("/dev/null", O_RDONLY, m)<0 ) break;
  }
  if( fd>=0 ){
    if( m!=0 ){
@@ -406,20 +406,6 @@ int sqlite3PagerTrace=1;  /* True to enable tracing */
 */
 #define UNKNOWN_LOCK                (EXCLUSIVE_LOCK+1)

-/*
-** A macro used for invoking the codec if there is one
-*/
-#ifdef SQLITE_HAS_CODEC
-# define CODEC1(P,D,N,X,E) \
-    if( P->xCodec && P->xCodec(P->pCodec,D,N,X)==0 ){ E; }
-# define CODEC2(P,D,N,X,E,O) \
-    if( P->xCodec==0 ){ O=(char*)D; }else \
-    if( (O=(char*)(P->xCodec(P->pCodec,D,N,X)))==0 ){ E; }
-#else
-# define CODEC1(P,D,N,X,E)   /* NO-OP */
-# define CODEC2(P,D,N,X,E,O) O=(char*)D
-#endif
-
 /*
 ** The maximum allowed sector size. 64KiB. If the xSectorsize() method 
 ** returns a value larger than this, then MAX_SECTOR_SIZE is used instead.
@@ -705,12 +691,6 @@ struct Pager {
 #endif
  void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */
  int (*xGet)(Pager*,Pgno,DbPage**,int); /* Routine to fetch a patch */
-#ifdef SQLITE_HAS_CODEC
-  void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */
-  void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */
-  void (*xCodecFree)(void*);             /* Destructor for the codec */
-  void *pCodec;               /* First argument to xCodec... methods */
-#endif
  char *pTmpSpace;            /* Pager.pageSize bytes of space for tmp use */
  PCache *pPCache;            /* Pointer to page cache object */
 #ifndef SQLITE_OMIT_WAL
@@ -837,9 +817,6 @@ static const unsigned char aJournalMagic[] = {
 int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno){
  if( pPager->fd->pMethods==0 ) return 0;
  if( sqlite3PCacheIsDirty(pPager->pPCache) ) return 0;
-#ifdef SQLITE_HAS_CODEC
-  if( pPager->xCodec!=0 ) return 0;
-#endif
 #ifndef SQLITE_OMIT_WAL
  if( pPager->pWal ){
    u32 iRead = 0;
@@ -1073,11 +1050,7 @@ static void setGetterMethod(Pager *pPager){
  if( pPager->errCode ){
    pPager->xGet = getPageError;
 #if SQLITE_MAX_MMAP_SIZE>0
-  }else if( USEFETCH(pPager)
-#ifdef SQLITE_HAS_CODEC
-   && pPager->xCodec==0
-#endif
-  ){
+  }else if( USEFETCH(pPager) ){
    pPager->xGet = getPageMMap;
 #endif /* SQLITE_MAX_MMAP_SIZE>0 */
  }else{
@@ -2225,35 +2198,6 @@ static u32 pager_cksum(Pager *pPager, const u8 *aData){
  return cksum;
 }

-/*
-** Report the current page size and number of reserved bytes back
-** to the codec.
-*/
-#ifdef SQLITE_HAS_CODEC
-static void pagerReportSize(Pager *pPager){
-  if( pPager->xCodecSizeChng ){
-    pPager->xCodecSizeChng(pPager->pCodec, pPager->pageSize,
-                           (int)pPager->nReserve);
-  }
-}
-#else
-# define pagerReportSize(X)     /* No-op if we do not support a codec */
-#endif
-
-#ifdef SQLITE_HAS_CODEC
-/*
-** Make sure the number of reserved bits is the same in the destination
-** pager as it is in the source.  This comes up when a VACUUM changes the
-** number of reserved bits to the "optimal" amount.
-*/
-void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){
-  if( pDest->nReserve!=pSrc->nReserve ){
-    pDest->nReserve = pSrc->nReserve;
-    pagerReportSize(pDest);
-  }
-}
-#endif
-
 /*
 ** Read a single page from either the journal file (if isMainJrnl==1) or
 ** from the sub-journal (if isMainJrnl==0) and playback that page.
@@ -2305,11 +2249,6 @@ static int pager_playback_one_page(
  char *aData;                  /* Temporary storage for the page */
  sqlite3_file *jfd;            /* The file descriptor for the journal file */
  int isSynced;                 /* True if journal page is synced */
-#ifdef SQLITE_HAS_CODEC
-  /* The jrnlEnc flag is true if Journal pages should be passed through
-  ** the codec.  It is false for pure in-memory journals. */
-  const int jrnlEnc = (isMainJrnl || pPager->subjInMemory==0);
-#endif

  assert( (isMainJrnl&~1)==0 );      /* isMainJrnl is 0 or 1 */
  assert( (isSavepnt&~1)==0 );       /* isSavepnt is 0 or 1 */
@@ -2372,7 +2311,6 @@ static int pager_playback_one_page(
  */
  if( pgno==1 && pPager->nReserve!=((u8*)aData)[20] ){
    pPager->nReserve = ((u8*)aData)[20];
-    pagerReportSize(pPager);
  }

  /* If the pager is in CACHEMOD state, then there must be a copy of this
@@ -2440,26 +2378,12 @@ static int pager_playback_one_page(
    ** is if the data was just read from an in-memory sub-journal. In that
    ** case it must be encrypted here before it is copied into the database
    ** file.  */
-#ifdef SQLITE_HAS_CODEC
-    if( !jrnlEnc ){
-      CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT, aData);
-      rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);
-      CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
-    }else
-#endif
    rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);

    if( pgno>pPager->dbFileSize ){
      pPager->dbFileSize = pgno;
    }
    if( pPager->pBackup ){
-#ifdef SQLITE_HAS_CODEC
-      if( jrnlEnc ){
-        CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
-        sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData);
-        CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT,aData);
-      }else
-#endif
      sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData);
    }
  }else if( !isMainJrnl && pPg==0 ){
@@ -2510,11 +2434,6 @@ static int pager_playback_one_page(
    if( pgno==1 ){
      memcpy(&pPager->dbFileVers, &((u8*)pData)[24],sizeof(pPager->dbFileVers));
    }
-
-    /* Decode the page just read from disk */
-#if SQLITE_HAS_CODEC
-    if( jrnlEnc ){ CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM_BKPT); }
-#endif
    sqlite3PcacheRelease(pPg);
  }
  return rc;
@@ -3074,8 +2993,6 @@ static int readDbPage(PgHdr *pPg){
      memcpy(&pPager->dbFileVers, dbFileVers, sizeof(pPager->dbFileVers));
    }
  }
-  CODEC1(pPager, pPg->pData, pPg->pgno, 3, rc = SQLITE_NOMEM_BKPT);
-
  PAGER_INCR(sqlite3_pager_readdb_count);
  PAGER_INCR(pPager->nRead);
  IOTRACE(("PGIN %p %d\n", pPager, pPg->pgno));
@@ -3819,7 +3736,6 @@ int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nReserve){
    if( nReserve<0 ) nReserve = pPager->nReserve;
    assert( nReserve>=0 && nReserve<1000 );
    pPager->nReserve = (i16)nReserve;
-    pagerReportSize(pPager);
    pagerFixMaplimit(pPager);
  }
  return rc;
@@ -4215,11 +4131,6 @@ int sqlite3PagerClose(Pager *pPager, sqlite3 *db){
  sqlite3OsClose(pPager->fd);
  sqlite3PageFree(pTmp);
  sqlite3PcacheClose(pPager->pPCache);
-
-#ifdef SQLITE_HAS_CODEC
-  if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec);
-#endif
-
  assert( !pPager->aSavepoint && !pPager->pInJournal );
  assert( !isOpen(pPager->jfd) && !isOpen(pPager->sjfd) );

@@ -4470,8 +4381,7 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){
      assert( (pList->flags&PGHDR_NEED_SYNC)==0 );
      if( pList->pgno==1 ) pager_write_changecounter(pList);

-      /* Encode the database */
-      CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM_BKPT, pData);
+      pData = pList->pData;

      /* Write out the page data. */
      rc = sqlite3OsWrite(pPager->fd, pData, pPager->pageSize, offset);
@@ -4560,12 +4470,6 @@ static int subjournalPage(PgHdr *pPg){
      void *pData = pPg->pData;
      i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize);
      char *pData2;
-
-#if SQLITE_HAS_CODEC   
-      if( !pPager->subjInMemory ){
-        CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2);
-      }else
-#endif
      pData2 = pData;
      PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno));
      rc = write32bits(pPager->sjfd, offset, pPg->pgno);
@@ -4866,6 +4770,11 @@ int sqlite3PagerOpen(
  **   - \0
  **   - WAL Path (zWALName)
  **   - \0
+  **
+  ** The sqlite3_create_filename() interface and the databaseFilename() utility
+  ** that is used by sqlite3_filename_database() and kin also depend on the
+  ** specific formatting and order of the various filenames, so if the format
+  ** changes here, be sure to change it there as well.
  */
  pPtr = (u8 *)sqlite3MallocZero(
    ROUND8(sizeof(*pPager)) +            /* Pager structure */
@@ -5647,9 +5556,6 @@ static int getPageMMap(
  );

  assert( USEFETCH(pPager) );
-#ifdef SQLITE_HAS_CODEC
-  assert( pPager->xCodec==0 );
-#endif

  /* Optimization note:  Adding the "pgno<=1" term before "pgno==0" here
  ** allows the compiler optimizer to reuse the results of the "pgno>1"
@@ -5978,7 +5884,7 @@ static SQLITE_NOINLINE int pagerAddPageToRollbackJournal(PgHdr *pPg){
  assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) );

  assert( pPager->journalHdr<=pPager->journalOff );
-  CODEC2(pPager, pPg->pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2);
+  pData2 = pPg->pData;
  cksum = pager_cksum(pPager, (u8*)pData2);

  /* Even if an IO or diskfull error occurs while journalling the
@@ -6343,7 +6249,7 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
      if( DIRECT_MODE ){
        const void *zBuf;
        assert( pPager->dbFileSize>0 );
-        CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM_BKPT, zBuf);
+        zBuf = pPgHdr->pData;
        if( rc==SQLITE_OK ){
          rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0);
          pPager->aStat[PAGER_STAT_WRITE]++;
@@ -7053,7 +6959,7 @@ int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
 ** sqlite3_uri_parameter() and sqlite3_filename_database() and friends.
 */
 const char *sqlite3PagerFilename(const Pager *pPager, int nullIfMemDb){
-  static const char zFake[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+  static const char zFake[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
  return (nullIfMemDb && pPager->memDb) ? &zFake[4] : pPager->zFilename;
 }

@@ -7102,54 +7008,6 @@ const char *sqlite3PagerJournalname(Pager *pPager){
  return pPager->zJournal;
 }

-#ifdef SQLITE_HAS_CODEC
-/*
-** Set or retrieve the codec for this pager
-*/
-void sqlite3PagerSetCodec(
-  Pager *pPager,
-  void *(*xCodec)(void*,void*,Pgno,int),
-  void (*xCodecSizeChng)(void*,int,int),
-  void (*xCodecFree)(void*),
-  void *pCodec
-){
-  if( pPager->xCodecFree ){
-    pPager->xCodecFree(pPager->pCodec);
-  }else{
-    pager_reset(pPager);
-  }
-  pPager->xCodec = pPager->memDb ? 0 : xCodec;
-  pPager->xCodecSizeChng = xCodecSizeChng;
-  pPager->xCodecFree = xCodecFree;
-  pPager->pCodec = pCodec;
-  setGetterMethod(pPager);
-  pagerReportSize(pPager);
-}
-void *sqlite3PagerGetCodec(Pager *pPager){
-  return pPager->pCodec;
-}
-
-/*
-** This function is called by the wal module when writing page content
-** into the log file.
-**
-** This function returns a pointer to a buffer containing the encrypted
-** page content. If a malloc fails, this function may return NULL.
-*/
-void *sqlite3PagerCodec(PgHdr *pPg){
-  void *aData = 0;
-  CODEC2(pPg->pPager, pPg->pData, pPg->pgno, 6, return 0, aData);
-  return aData;
-}
-
-/*
-** Return the current pager state
-*/
-int sqlite3PagerState(Pager *pPager){
-  return pPager->eState;
-}
-#endif /* SQLITE_HAS_CODEC */
-
 #ifndef SQLITE_OMIT_AUTOVACUUM
 /*
 ** Move the page pPg to location pgno in the file.
@@ -128,9 +128,6 @@ int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
 /* Functions used to configure a Pager object. */
 void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
 int sqlite3PagerSetPagesize(Pager*, u32*, int);
-#ifdef SQLITE_HAS_CODEC
-void sqlite3PagerAlignReserve(Pager*,Pager*);
-#endif
 int sqlite3PagerMaxPageCount(Pager*, int);
 void sqlite3PagerSetCachesize(Pager*, int);
 int sqlite3PagerSetSpillsize(Pager*, int);
@@ -224,10 +221,6 @@ void sqlite3PagerTruncateImage(Pager*,Pgno);

 void sqlite3PagerRekey(DbPage*, Pgno, u16);

-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
-void *sqlite3PagerCodec(DbPage *);
-#endif
-
 /* Functions to support testing and debugging. */
 #if !defined(NDEBUG) || defined(SQLITE_TEST)
  Pgno sqlite3PagerPagenumber(DbPage*);
@@ -965,6 +965,7 @@ idlist(A) ::= nm(Y).
      p->op = (u8)op;
      p->affExpr = 0;
      p->flags = EP_Leaf;
+      ExprClearVVAProperties(p);
      p->iAgg = -1;
      p->pLeft = p->pRight = 0;
      p->x.pList = 0;
@@ -1193,6 +1194,12 @@ expr(A) ::= expr(A) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
      */
      sqlite3ExprUnmapAndDelete(pParse, A);
      A = sqlite3Expr(pParse->db, TK_INTEGER, N ? "1" : "0");
+    }else if( 0 && Y->nExpr==1 && sqlite3ExprIsConstant(Y->a[0].pExpr) ){
+      Expr *pRHS = Y->a[0].pExpr;
+      Y->a[0].pExpr = 0;
+      sqlite3ExprListDelete(pParse->db, Y);
+      A = sqlite3PExpr(pParse, TK_EQ, A, pRHS);
+      if( N ) A = sqlite3PExpr(pParse, TK_NOT, A, 0);
    }else{
      A = sqlite3PExpr(pParse, TK_IN, A, 0);
      if( A ){
@@ -1824,21 +1824,12 @@ void sqlite3Pragma(
      ** will be overwritten when the schema is next loaded. If it does not
      ** already exists, it will be created to use the new encoding value.
      */
-      int canChangeEnc = 1;  /* True if allowed to change the encoding */
-      int i;                 /* For looping over all attached databases */
-      for(i=0; i<db->nDb; i++){
-        if( db->aDb[i].pBt!=0
-         && DbHasProperty(db,i,DB_SchemaLoaded)
-         && !DbHasProperty(db,i,DB_Empty)
-        ){
-          canChangeEnc = 0;
-        }
-      }
-      if( canChangeEnc ){
+      if( (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){
        for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
          if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
-            SCHEMA_ENC(db) = ENC(db) =
-                pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
+            u8 enc = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
+            SCHEMA_ENC(db) = enc;
+            sqlite3SetTextEncoding(db, enc);
            break;
          }
        }
@@ -2215,59 +2206,11 @@ void sqlite3Pragma(
  }
 #endif

-#ifdef SQLITE_HAS_CODEC
-  /* Pragma        iArg
-  ** ----------   ------
-  **  key           0
-  **  rekey         1
-  **  hexkey        2
-  **  hexrekey      3
-  **  textkey       4
-  **  textrekey     5
-  */
-  case PragTyp_KEY: {
-    if( zRight ){
-      char zBuf[40];
-      const char *zKey = zRight;
-      int n;
-      if( pPragma->iArg==2 || pPragma->iArg==3 ){
-        u8 iByte;
-        int i;
-        for(i=0, iByte=0; i<sizeof(zBuf)*2 && sqlite3Isxdigit(zRight[i]); i++){
-          iByte = (iByte<<4) + sqlite3HexToInt(zRight[i]);
-          if( (i&1)!=0 ) zBuf[i/2] = iByte;
-        }
-        zKey = zBuf;
-        n = i/2;
-      }else{
-        n = pPragma->iArg<4 ? sqlite3Strlen30(zRight) : -1;
-      }
-      if( (pPragma->iArg & 1)==0 ){
-        rc = sqlite3_key_v2(db, zDb, zKey, n);
-      }else{
-        rc = sqlite3_rekey_v2(db, zDb, zKey, n);
-      }
-      if( rc==SQLITE_OK && n!=0 ){
-        sqlite3VdbeSetNumCols(v, 1);
-        sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "ok", SQLITE_STATIC);
-        returnSingleText(v, "ok");
-      }
-    }
-    break;
-  }
-#endif
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
+#if defined(SQLITE_ENABLE_CEROD)
  case PragTyp_ACTIVATE_EXTENSIONS: if( zRight ){
-#ifdef SQLITE_HAS_CODEC
-    if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){
-      sqlite3_activate_see(&zRight[4]);
-    }
-#endif
-#ifdef SQLITE_ENABLE_CEROD
    if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){
      sqlite3_activate_cerod(&zRight[6]);
    }
-#endif
  }
  break;
 #endif
@@ -5,51 +5,50 @@
 */

 /* The various pragma types */
-#define PragTyp_HEADER_VALUE                   0
-#define PragTyp_AUTO_VACUUM                    1
-#define PragTyp_FLAG                           2
-#define PragTyp_BUSY_TIMEOUT                   3
-#define PragTyp_CACHE_SIZE                     4
-#define PragTyp_CACHE_SPILL                    5
-#define PragTyp_CASE_SENSITIVE_LIKE            6
-#define PragTyp_COLLATION_LIST                 7
-#define PragTyp_COMPILE_OPTIONS                8
-#define PragTyp_DATA_STORE_DIRECTORY           9
-#define PragTyp_DATABASE_LIST                 10
-#define PragTyp_DEFAULT_CACHE_SIZE            11
-#define PragTyp_ENCODING                      12
-#define PragTyp_FOREIGN_KEY_CHECK             13
-#define PragTyp_FOREIGN_KEY_LIST              14
-#define PragTyp_FUNCTION_LIST                 15
-#define PragTyp_HARD_HEAP_LIMIT               16
-#define PragTyp_INCREMENTAL_VACUUM            17
-#define PragTyp_INDEX_INFO                    18
-#define PragTyp_INDEX_LIST                    19
-#define PragTyp_INTEGRITY_CHECK               20
-#define PragTyp_JOURNAL_MODE                  21
-#define PragTyp_JOURNAL_SIZE_LIMIT            22
-#define PragTyp_LOCK_PROXY_FILE               23
-#define PragTyp_LOCKING_MODE                  24
-#define PragTyp_PAGE_COUNT                    25
-#define PragTyp_MMAP_SIZE                     26
-#define PragTyp_MODULE_LIST                   27
-#define PragTyp_OPTIMIZE                      28
-#define PragTyp_PAGE_SIZE                     29
-#define PragTyp_PRAGMA_LIST                   30
-#define PragTyp_SECURE_DELETE                 31
-#define PragTyp_SHRINK_MEMORY                 32
-#define PragTyp_SOFT_HEAP_LIMIT               33
-#define PragTyp_SYNCHRONOUS                   34
-#define PragTyp_TABLE_INFO                    35
-#define PragTyp_TEMP_STORE                    36
-#define PragTyp_TEMP_STORE_DIRECTORY          37
-#define PragTyp_THREADS                       38
-#define PragTyp_WAL_AUTOCHECKPOINT            39
-#define PragTyp_WAL_CHECKPOINT                40
-#define PragTyp_ACTIVATE_EXTENSIONS           41
-#define PragTyp_KEY                           42
-#define PragTyp_LOCK_STATUS                   43
-#define PragTyp_STATS                         44
+#define PragTyp_ACTIVATE_EXTENSIONS            0
+#define PragTyp_HEADER_VALUE                   1
+#define PragTyp_AUTO_VACUUM                    2
+#define PragTyp_FLAG                           3
+#define PragTyp_BUSY_TIMEOUT                   4
+#define PragTyp_CACHE_SIZE                     5
+#define PragTyp_CACHE_SPILL                    6
+#define PragTyp_CASE_SENSITIVE_LIKE            7
+#define PragTyp_COLLATION_LIST                 8
+#define PragTyp_COMPILE_OPTIONS                9
+#define PragTyp_DATA_STORE_DIRECTORY          10
+#define PragTyp_DATABASE_LIST                 11
+#define PragTyp_DEFAULT_CACHE_SIZE            12
+#define PragTyp_ENCODING                      13
+#define PragTyp_FOREIGN_KEY_CHECK             14
+#define PragTyp_FOREIGN_KEY_LIST              15
+#define PragTyp_FUNCTION_LIST                 16
+#define PragTyp_HARD_HEAP_LIMIT               17
+#define PragTyp_INCREMENTAL_VACUUM            18
+#define PragTyp_INDEX_INFO                    19
+#define PragTyp_INDEX_LIST                    20
+#define PragTyp_INTEGRITY_CHECK               21
+#define PragTyp_JOURNAL_MODE                  22
+#define PragTyp_JOURNAL_SIZE_LIMIT            23
+#define PragTyp_LOCK_PROXY_FILE               24
+#define PragTyp_LOCKING_MODE                  25
+#define PragTyp_PAGE_COUNT                    26
+#define PragTyp_MMAP_SIZE                     27
+#define PragTyp_MODULE_LIST                   28
+#define PragTyp_OPTIMIZE                      29
+#define PragTyp_PAGE_SIZE                     30
+#define PragTyp_PRAGMA_LIST                   31
+#define PragTyp_SECURE_DELETE                 32
+#define PragTyp_SHRINK_MEMORY                 33
+#define PragTyp_SOFT_HEAP_LIMIT               34
+#define PragTyp_SYNCHRONOUS                   35
+#define PragTyp_TABLE_INFO                    36
+#define PragTyp_TEMP_STORE                    37
+#define PragTyp_TEMP_STORE_DIRECTORY          38
+#define PragTyp_THREADS                       39
+#define PragTyp_WAL_AUTOCHECKPOINT            40
+#define PragTyp_WAL_CHECKPOINT                41
+#define PragTyp_LOCK_STATUS                   42
+#define PragTyp_STATS                         43

 /* Property flags associated with various pragma. */
 #define PragFlg_NeedSchema 0x01 /* Force schema load before running */
@@ -133,7 +132,7 @@ typedef struct PragmaName {
  u64 iArg;                /* Extra argument */
 } PragmaName;
 static const PragmaName aPragmaName[] = {
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
+#if defined(SQLITE_ENABLE_CEROD)
 {/* zName:     */ "activate_extensions",
  /* ePragTyp:  */ PragTyp_ACTIVATE_EXTENSIONS,
  /* ePragFlg:  */ 0,
@@ -329,18 +328,6 @@ static const PragmaName aPragmaName[] = {
  /* ePragFlg:  */ PragFlg_Result0,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
-#if defined(SQLITE_HAS_CODEC)
- {/* zName:     */ "hexkey",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 2 },
- {/* zName:     */ "hexrekey",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 3 },
-#endif
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
 #if !defined(SQLITE_OMIT_CHECK)
 {/* zName:     */ "ignore_check_constraints",
@@ -393,13 +380,6 @@ static const PragmaName aPragmaName[] = {
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
 #endif
-#if defined(SQLITE_HAS_CODEC)
- {/* zName:     */ "key",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 0 },
-#endif
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
 {/* zName:     */ "legacy_alter_table",
  /* ePragTyp:  */ PragTyp_FLAG,
@@ -507,15 +487,6 @@ static const PragmaName aPragmaName[] = {
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ SQLITE_RecTriggers },
-#endif
-#if defined(SQLITE_HAS_CODEC)
- {/* zName:     */ "rekey",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 1 },
-#endif
-#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
 {/* zName:     */ "reverse_unordered_selects",
  /* ePragTyp:  */ PragTyp_FLAG,
  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
@@ -599,18 +570,6 @@ static const PragmaName aPragmaName[] = {
  /* ePragFlg:  */ PragFlg_NoColumns1,
  /* ColNames:  */ 0, 0,
  /* iArg:      */ 0 },
-#endif
-#if defined(SQLITE_HAS_CODEC)
- {/* zName:     */ "textkey",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 4 },
- {/* zName:     */ "textrekey",
-  /* ePragTyp:  */ PragTyp_KEY,
-  /* ePragFlg:  */ 0,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ 5 },
 #endif
 {/* zName:     */ "threads",
  /* ePragTyp:  */ PragTyp_THREADS,
@@ -680,4 +639,4 @@ static const PragmaName aPragmaName[] = {
  /* iArg:      */ SQLITE_WriteSchema|SQLITE_NoSchemaError },
 #endif
 };
-/* Number of pragmas: 66 on by default, 82 total. */
+/* Number of pragmas: 66 on by default, 76 total. */
@@ -91,7 +91,7 @@ int sqlite3InitCallback(void *pInit, int argc, char **argv, char **NotUsed){
  assert( argc==5 );
  UNUSED_PARAMETER2(NotUsed, argc);
  assert( sqlite3_mutex_held(db->mutex) );
-  DbClearProperty(db, iDb, DB_Empty);
+  db->mDbFlags |= DBFLAG_EncodingFixed;
  pData->nInitRow++;
  if( db->mallocFailed ){
    corruptSchema(pData, argv[1], 0);
@@ -179,6 +179,7 @@ int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFlags){
  InitData initData;
  const char *zMasterName;
  int openedTransaction = 0;
+  int mask = ((db->mDbFlags & DBFLAG_EncodingFixed) | ~DBFLAG_EncodingFixed);

  assert( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 );
  assert( iDb>=0 && iDb<db->nDb );
@@ -207,6 +208,7 @@ int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFlags){
  initData.mInitFlags = mFlags;
  initData.nInitRow = 0;
  sqlite3InitCallback(&initData, 5, (char **)azArg, 0);
+  db->mDbFlags &= mask;
  if( initData.rc ){
    rc = initData.rc;
    goto error_out;
@@ -266,27 +268,25 @@ int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFlags){
  ** as sqlite3.enc.
  */
  if( meta[BTREE_TEXT_ENCODING-1] ){  /* text encoding */
-    if( iDb==0 ){
-#ifndef SQLITE_OMIT_UTF16
+    if( iDb==0 && (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){
      u8 encoding;
+#ifndef SQLITE_OMIT_UTF16
      /* If opening the main database, set ENC(db). */
      encoding = (u8)meta[BTREE_TEXT_ENCODING-1] & 3;
      if( encoding==0 ) encoding = SQLITE_UTF8;
-      ENC(db) = encoding;
 #else
-      ENC(db) = SQLITE_UTF8;
+      encoding = SQLITE_UTF8;
 #endif
+      sqlite3SetTextEncoding(db, encoding);
    }else{
      /* If opening an attached database, the encoding much match ENC(db) */
-      if( meta[BTREE_TEXT_ENCODING-1]!=ENC(db) ){
+      if( (meta[BTREE_TEXT_ENCODING-1] & 3)!=ENC(db) ){
        sqlite3SetString(pzErrMsg, db, "attached databases must use the same"
            " text encoding as main database");
        rc = SQLITE_ERROR;
        goto initone_error_out;
      }
    }
-  }else{
-    DbSetProperty(db, iDb, DB_Empty);
  }
  pDb->pSchema->enc = ENC(db);

@@ -398,8 +398,7 @@ error_out:
 ** error occurs, write an error message into *pzErrMsg.
 **
 ** After a database is initialized, the DB_SchemaLoaded bit is set
-** bit is set in the flags field of the Db structure. If the database
-** file was of zero-length, then the DB_Empty flag is also set.
+** bit is set in the flags field of the Db structure. 
 */
 int sqlite3Init(sqlite3 *db, char **pzErrMsg){
  int i, rc;
@@ -1051,7 +1051,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
      assert( !ExprHasProperty(pExpr, EP_Reduced) );
      /* Handle special cases of "x IS TRUE", "x IS FALSE", "x IS NOT TRUE",
      ** and "x IS NOT FALSE". */
-      if( pRight->op==TK_ID ){
+      if( pRight && pRight->op==TK_ID ){
        int rc = resolveExprStep(pWalker, pRight);
        if( rc==WRC_Abort ) return WRC_Abort;
        if( pRight->op==TK_TRUEFALSE ){
@@ -177,7 +177,7 @@ void sqlite3RowSetDelete(void *pArg){
 /*
 ** Allocate a new RowSetEntry object that is associated with the
 ** given RowSet.  Return a pointer to the new and completely uninitialized
-** objected.
+** object.
 **
 ** In an OOM situation, the RowSet.db->mallocFailed flag is set and this
 ** routine returns NULL.
@@ -453,7 +453,7 @@ int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64 iRowid){
    if( p ){
      struct RowSetEntry **ppPrevTree = &pRowSet->pForest;
      if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/
-        /* Only sort the current set of entiries if they need it */
+        /* Only sort the current set of entries if they need it */
        p = rowSetEntrySort(p);
      }
      for(pTree = pRowSet->pForest; pTree; pTree=pTree->pRight){
@@ -2806,6 +2806,7 @@ static int multiSelect(
        /* Generate code to take the intersection of the two temporary
        ** tables.
        */
+        if( rc ) break;
        assert( p->pEList );
        iBreak = sqlite3VdbeMakeLabel(pParse);
        iCont = sqlite3VdbeMakeLabel(pParse);
@@ -4166,9 +4167,8 @@ static void constInsert(
  assert( pColumn->op==TK_COLUMN );
  assert( sqlite3ExprIsConstant(pValue) );

-  if( !ExprHasProperty(pValue, EP_FixedCol) && sqlite3ExprAffinity(pValue)!=0 ){
-    return;
-  }
+  if( ExprHasProperty(pColumn, EP_FixedCol) ) return;
+  if( sqlite3ExprAffinity(pValue)!=0 ) return;
  if( !sqlite3IsBinary(sqlite3ExprCompareCollSeq(pConst->pParse,pExpr)) ){
    return;
  }
@@ -4191,9 +4191,6 @@ static void constInsert(
  if( pConst->apExpr==0 ){
    pConst->nConst = 0;
  }else{
-    if( ExprHasProperty(pValue, EP_FixedCol) ){
-      pValue = pValue->pLeft;
-    }
    pConst->apExpr[pConst->nConst*2-2] = pColumn;
    pConst->apExpr[pConst->nConst*2-1] = pValue;
  }
@@ -4469,7 +4466,7 @@ static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
  ExprList *pEList = pFunc->x.pList;    /* Arguments to agg function */
  const char *zFunc;                    /* Name of aggregate function pFunc */
  ExprList *pOrderBy;
-  u8 sortFlags;
+  u8 sortFlags = 0;

  assert( *ppMinMax==0 );
  assert( pFunc->op==TK_AGG_FUNCTION );
@@ -4480,7 +4477,9 @@ static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
  zFunc = pFunc->u.zToken;
  if( sqlite3StrICmp(zFunc, "min")==0 ){
    eRet = WHERE_ORDERBY_MIN;
-    sortFlags = KEYINFO_ORDER_BIGNULL;
+    if( sqlite3ExprCanBeNull(pEList->a[0].pExpr) ){
+      sortFlags = KEYINFO_ORDER_BIGNULL;
+    }
  }else if( sqlite3StrICmp(zFunc, "max")==0 ){
    eRet = WHERE_ORDERBY_MAX;
    sortFlags = KEYINFO_ORDER_DESC;
@@ -5148,7 +5147,7 @@ static int selectExpander(Walker *pWalker, Select *p){
            pNew = sqlite3ExprListAppend(pParse, pNew, pExpr);
            sqlite3TokenInit(&sColname, zColname);
            sqlite3ExprListSetName(pParse, pNew, &sColname, 0);
-            if( pNew && (p->selFlags & SF_NestedFrom)!=0 ){
+            if( pNew && (p->selFlags & SF_NestedFrom)!=0 && !IN_RENAME_OBJECT ){
              struct ExprList_item *pX = &pNew->a[pNew->nExpr-1];
              sqlite3DbFree(db, pX->zEName);
              if( pSub ){
@@ -5493,7 +5492,7 @@ static void updateAccumulator(Parse *pParse, int regAcc, AggInfo *pAggInfo){

  pAggInfo->directMode = 0;
  if( addrHitTest ){
-    sqlite3VdbeJumpHere(v, addrHitTest);
+    sqlite3VdbeJumpHereOrPopInst(v, addrHitTest);
  }
 }

@@ -397,6 +397,15 @@ static sqlite3 *globalDb = 0;
 */
 static volatile int seenInterrupt = 0;

+#ifdef SQLITE_DEBUG
+/*
+** Out-of-memory simulator variables
+*/
+static unsigned int oomCounter = 0;    /* Simulate OOM when equals 1 */
+static unsigned int oomRepeat = 0;     /* Number of OOMs in a row */
+static void*(*defaultMalloc)(int) = 0; /* The low-level malloc routine */
+#endif /* SQLITE_DEBUG */
+
 /*
 ** This is the name of our program. It is set in main(), used
 ** in a number of other places, mostly for error messages.
@@ -448,6 +457,49 @@ static void shell_out_of_memory(void){
  exit(1);
 }

+#ifdef SQLITE_DEBUG
+/* This routine is called when a simulated OOM occurs.  It is broken
+** out as a separate routine to make it easy to set a breakpoint on
+** the OOM
+*/
+void shellOomFault(void){
+  if( oomRepeat>0 ){
+    oomRepeat--;
+  }else{
+    oomCounter--;
+  }
+}
+#endif /* SQLITE_DEBUG */
+
+#ifdef SQLITE_DEBUG
+/* This routine is a replacement malloc() that is used to simulate
+** Out-Of-Memory (OOM) errors for testing purposes.
+*/
+static void *oomMalloc(int nByte){
+  if( oomCounter ){
+    if( oomCounter==1 ){
+      shellOomFault();
+      return 0;
+    }else{
+      oomCounter--;
+    }
+  }
+  return defaultMalloc(nByte);
+}
+#endif /* SQLITE_DEBUG */
+
+#ifdef SQLITE_DEBUG
+/* Register the OOM simulator.  This must occur before any memory
+** allocations */
+static void registerOomSimulator(void){
+  sqlite3_mem_methods mem;
+  sqlite3_config(SQLITE_CONFIG_GETMALLOC, &mem);
+  defaultMalloc = mem.xMalloc;
+  mem.xMalloc = oomMalloc;
+  sqlite3_config(SQLITE_CONFIG_MALLOC, &mem);
+}
+#endif
+
 /*
 ** Write I/O traces to the following stream.
 */
@@ -3523,6 +3575,18 @@ static const char *(azHelp[]) = {
  ".headers on|off          Turn display of headers on or off",
  ".help ?-all? ?PATTERN?   Show help text for PATTERN",
  ".import FILE TABLE       Import data from FILE into TABLE",
+  "   Options:",
+  "     --ascii               Use \\037 and \\036 as column and row separators",
+  "     --csv                 Use , and \\n as column and row separators",
+  "     --skip N              Skip the first N rows of input",
+  "     -v                    \"Verbose\" - increase auxiliary output",
+  "   Notes:",
+  "     *  If TABLE does not exist, it is created.  The first row of input",
+  "        determines the column names.",
+  "     *  If neither --csv or --ascii are used, the input mode is derived",
+  "        from the \".mode\" output mode",
+  "     *  If FILE begins with \"|\" then it is a command that generates the",
+  "        input text.",
 #ifndef SQLITE_OMIT_TEST_CONTROL
  ".imposter INDEX TABLE    Create imposter table TABLE on index INDEX",
 #endif
@@ -3558,6 +3622,9 @@ static const char *(azHelp[]) = {
  "     Other options:",
  "       -e    Invoke system text editor",
  "       -x    Open in a spreadsheet",
+#ifdef SQLITE_DEBUG
+  ".oom [--repeat M] [N]    Simulate an OOM error on the N-th allocation",
+#endif 
  ".open ?OPTIONS? ?FILE?   Close existing database and reopen FILE",
  "     Options:",
  "        --append        Use appendvfs to append database to the end of FILE",
@@ -4508,6 +4575,8 @@ struct ImportCtx {
  int n;              /* Number of bytes in z */
  int nAlloc;         /* Space allocated for z[] */
  int nLine;          /* Current line number */
+  int nRow;           /* Number of rows imported */
+  int nErr;           /* Number of errors encountered */
  int bNotFirst;      /* True if one or more bytes already read */
  int cTerm;          /* Character that terminated the most recent field */
  int cColSep;        /* The column separator character.  (Usually ",") */
@@ -7568,8 +7637,8 @@ static int do_meta_command(char *zLine, ShellState *p){
  }else

  if( c=='i' && strncmp(azArg[0], "import", n)==0 ){
-    char *zTable;               /* Insert data into this table */
-    char *zFile;                /* Name of file to extra content from */
+    char *zTable = 0;           /* Insert data into this table */
+    char *zFile = 0;            /* Name of file to extra content from */
    sqlite3_stmt *pStmt = NULL; /* A statement */
    int nCol;                   /* Number of columns in the table */
    int nByte;                  /* Number of bytes in an SQL string */
@@ -7580,51 +7649,108 @@ static int do_meta_command(char *zLine, ShellState *p){
    ImportCtx sCtx;             /* Reader context */
    char *(SQLITE_CDECL *xRead)(ImportCtx*); /* Func to read one value */
    int (SQLITE_CDECL *xCloser)(FILE*);      /* Func to close file */
+    int eVerbose = 0;           /* Larger for more console output */
+    int nSkip = 0;              /* Initial lines to skip */
+    int useOutputMode = 1;      /* Use output mode to determine separators */

-    if( nArg!=3 ){
-      raw_printf(stderr, "Usage: .import FILE TABLE\n");
+    memset(&sCtx, 0, sizeof(sCtx));
+    if( p->mode==MODE_Ascii ){
+      xRead = ascii_read_one_field;
+    }else{
+      xRead = csv_read_one_field;
+    }
+    for(i=1; i<nArg; i++){
+      char *z = azArg[i];
+      if( z[0]=='-' && z[1]=='-' ) z++;
+      if( z[0]!='-' ){
+        if( zFile==0 ){
+          zFile = z;
+        }else if( zTable==0 ){
+          zTable = z;
+        }else{
+          utf8_printf(p->out, "ERROR: extra argument: \"%s\".  Usage:\n", z);
+          showHelp(p->out, "import");
+          rc = 1;
+          goto meta_command_exit;
+        }
+      }else if( strcmp(z,"-v")==0 ){
+        eVerbose++;
+      }else if( strcmp(z,"-skip")==0 && i<nArg-1 ){
+        nSkip = integerValue(azArg[++i]);
+      }else if( strcmp(z,"-ascii")==0 ){
+        sCtx.cColSep = SEP_Unit[0];
+        sCtx.cRowSep = SEP_Record[0];
+        xRead = ascii_read_one_field;
+        useOutputMode = 0;
+      }else if( strcmp(z,"-csv")==0 ){
+        sCtx.cColSep = ',';
+        sCtx.cRowSep = '\n';
+        xRead = csv_read_one_field;
+        useOutputMode = 0;
+      }else{
+        utf8_printf(p->out, "ERROR: unknown option: \"%s\".  Usage:\n", z);
+        showHelp(p->out, "import");
+        rc = 1;
+        goto meta_command_exit;
+      }
+    }
+    if( zTable==0 ){
+      utf8_printf(p->out, "ERROR: missing %s argument. Usage:\n",
+                  zFile==0 ? "FILE" : "TABLE");
+      showHelp(p->out, "import");
+      rc = 1;
      goto meta_command_exit;
    }
-    zFile = azArg[1];
-    zTable = azArg[2];
    seenInterrupt = 0;
-    memset(&sCtx, 0, sizeof(sCtx));
    open_db(p, 0);
-    nSep = strlen30(p->colSeparator);
-    if( nSep==0 ){
-      raw_printf(stderr,
-                 "Error: non-null column separator required for import\n");
-      return 1;
-    }
-    if( nSep>1 ){
-      raw_printf(stderr, "Error: multi-character column separators not allowed"
-                      " for import\n");
-      return 1;
-    }
-    nSep = strlen30(p->rowSeparator);
-    if( nSep==0 ){
-      raw_printf(stderr, "Error: non-null row separator required for import\n");
-      return 1;
-    }
-    if( nSep==2 && p->mode==MODE_Csv && strcmp(p->rowSeparator, SEP_CrLf)==0 ){
-      /* When importing CSV (only), if the row separator is set to the
-      ** default output row separator, change it to the default input
-      ** row separator.  This avoids having to maintain different input
-      ** and output row separators. */
-      sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row);
+    if( useOutputMode ){
+      /* If neither the --csv or --ascii options are specified, then set
+      ** the column and row separator characters from the output mode. */
+      nSep = strlen30(p->colSeparator);
+      if( nSep==0 ){
+        raw_printf(stderr,
+                   "Error: non-null column separator required for import\n");
+        rc = 1;
+        goto meta_command_exit;
+      }
+      if( nSep>1 ){
+        raw_printf(stderr, 
+              "Error: multi-character column separators not allowed"
+              " for import\n");
+        rc = 1;
+        goto meta_command_exit;
+      }
      nSep = strlen30(p->rowSeparator);
-    }
-    if( nSep>1 ){
-      raw_printf(stderr, "Error: multi-character row separators not allowed"
-                      " for import\n");
-      return 1;
+      if( nSep==0 ){
+        raw_printf(stderr,
+            "Error: non-null row separator required for import\n");
+        rc = 1;
+        goto meta_command_exit;
+      }
+      if( nSep==2 && p->mode==MODE_Csv && strcmp(p->rowSeparator,SEP_CrLf)==0 ){
+        /* When importing CSV (only), if the row separator is set to the
+        ** default output row separator, change it to the default input
+        ** row separator.  This avoids having to maintain different input
+        ** and output row separators. */
+        sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row);
+        nSep = strlen30(p->rowSeparator);
+      }
+      if( nSep>1 ){
+        raw_printf(stderr, "Error: multi-character row separators not allowed"
+                           " for import\n");
+        rc = 1;
+        goto meta_command_exit;
+      }
+      sCtx.cColSep = p->colSeparator[0];
+      sCtx.cRowSep = p->rowSeparator[0];
    }
    sCtx.zFile = zFile;
    sCtx.nLine = 1;
    if( sCtx.zFile[0]=='|' ){
 #ifdef SQLITE_OMIT_POPEN
      raw_printf(stderr, "Error: pipes are not supported in this OS\n");
-      return 1;
+      rc = 1;
+      goto meta_command_exit;
 #else
      sCtx.in = popen(sCtx.zFile+1, "r");
      sCtx.zFile = "<pipe>";
@@ -7634,17 +7760,26 @@ static int do_meta_command(char *zLine, ShellState *p){
      sCtx.in = fopen(sCtx.zFile, "rb");
      xCloser = fclose;
    }
-    if( p->mode==MODE_Ascii ){
-      xRead = ascii_read_one_field;
-    }else{
-      xRead = csv_read_one_field;
-    }
    if( sCtx.in==0 ){
      utf8_printf(stderr, "Error: cannot open \"%s\"\n", zFile);
-      return 1;
+      rc = 1;
+      goto meta_command_exit;
+    }
+    if( eVerbose>=2 || (eVerbose>=1 && useOutputMode) ){
+      char zSep[2];
+      zSep[1] = 0;
+      zSep[0] = sCtx.cColSep;
+      utf8_printf(p->out, "Column separator ");
+      output_c_string(p->out, zSep);
+      utf8_printf(p->out, ", row separator ");
+      zSep[0] = sCtx.cRowSep;
+      output_c_string(p->out, zSep);
+      utf8_printf(p->out, "\n");
+    }
+    while( (nSkip--)>0 ){
+      while( xRead(&sCtx) && sCtx.cTerm==sCtx.cColSep ){}
+      sCtx.nLine++;
    }
-    sCtx.cColSep = p->colSeparator[0];
-    sCtx.cRowSep = p->rowSeparator[0];
    zSql = sqlite3_mprintf("SELECT * FROM %s", zTable);
    if( zSql==0 ){
      xCloser(sCtx.in);
@@ -7666,9 +7801,13 @@ static int do_meta_command(char *zLine, ShellState *p){
        sqlite3_free(sCtx.z);
        xCloser(sCtx.in);
        utf8_printf(stderr,"%s: empty file\n", sCtx.zFile);
-        return 1;
+        rc = 1;
+        goto meta_command_exit;
      }
      zCreate = sqlite3_mprintf("%z\n)", zCreate);
+      if( eVerbose>=1 ){
+        utf8_printf(p->out, "%s\n", zCreate);
+      }
      rc = sqlite3_exec(p->db, zCreate, 0, 0, 0);
      sqlite3_free(zCreate);
      if( rc ){
@@ -7676,7 +7815,8 @@ static int do_meta_command(char *zLine, ShellState *p){
                sqlite3_errmsg(p->db));
        sqlite3_free(sCtx.z);
        xCloser(sCtx.in);
-        return 1;
+        rc = 1;
+        goto meta_command_exit;
      }
      rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
    }
@@ -7685,7 +7825,8 @@ static int do_meta_command(char *zLine, ShellState *p){
      if (pStmt) sqlite3_finalize(pStmt);
      utf8_printf(stderr,"Error: %s\n", sqlite3_errmsg(p->db));
      xCloser(sCtx.in);
-      return 1;
+      rc = 1;
+      goto meta_command_exit;
    }
    nCol = sqlite3_column_count(pStmt);
    sqlite3_finalize(pStmt);
@@ -7704,13 +7845,17 @@ static int do_meta_command(char *zLine, ShellState *p){
    }
    zSql[j++] = ')';
    zSql[j] = 0;
+    if( eVerbose>=2 ){
+      utf8_printf(p->out, "Insert using: %s\n", zSql);
+    }
    rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
    sqlite3_free(zSql);
    if( rc ){
      utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db));
      if (pStmt) sqlite3_finalize(pStmt);
      xCloser(sCtx.in);
-      return 1;
+      rc = 1;
+      goto meta_command_exit;
    }
    needCommit = sqlite3_get_autocommit(p->db);
    if( needCommit ) sqlite3_exec(p->db, "BEGIN", 0, 0, 0);
@@ -7753,6 +7898,9 @@ static int do_meta_command(char *zLine, ShellState *p){
        if( rc!=SQLITE_OK ){
          utf8_printf(stderr, "%s:%d: INSERT failed: %s\n", sCtx.zFile,
                      startLine, sqlite3_errmsg(p->db));
+          sCtx.nErr++;
+        }else{
+          sCtx.nRow++;
        }
      }
    }while( sCtx.cTerm!=EOF );
@@ -7761,6 +7909,11 @@ static int do_meta_command(char *zLine, ShellState *p){
    sqlite3_free(sCtx.z);
    sqlite3_finalize(pStmt);
    if( needCommit ) sqlite3_exec(p->db, "COMMIT", 0, 0, 0);
+    if( eVerbose>0 ){
+      utf8_printf(p->out,
+          "Added %d rows with %d errors using %d lines of input\n",
+          sCtx.nRow, sCtx.nErr, sCtx.nLine-1);
+    }
  }else

 #ifndef SQLITE_UNTESTABLE
@@ -8039,6 +8192,34 @@ static int do_meta_command(char *zLine, ShellState *p){
    }
  }else

+#ifdef SQLITE_DEBUG
+  if( c=='o' && strcmp(azArg[0],"oom")==0 ){
+    int i;
+    for(i=1; i<nArg; i++){
+      const char *z = azArg[i];
+      if( z[0]=='-' && z[1]=='-' ) z++;
+      if( strcmp(z,"-repeat")==0 ){
+        if( i==nArg-1 ){
+          raw_printf(p->out, "missing argument on \"%s\"\n", azArg[i]);
+          rc = 1;
+        }else{
+          oomRepeat = (int)integerValue(azArg[++i]);
+        }
+      }else if( IsDigit(z[0]) ){
+        oomCounter = (int)integerValue(azArg[i]);
+      }else{
+        raw_printf(p->out, "unknown argument: \"%s\"\n", azArg[i]);
+        raw_printf(p->out, "Usage: .oom [--repeat N] [M]\n");
+        rc = 1;
+      }
+    }
+    if( rc==0 ){
+      raw_printf(p->out, "oomCounter = %d\n", oomCounter);
+      raw_printf(p->out, "oomRepeat  = %d\n", oomRepeat);
+    }
+  }else
+#endif /* SQLITE_DEBUG */
+
  if( c=='o' && strncmp(azArg[0], "open", n)==0 && n>=2 ){
    char *zNewFilename;  /* Name of the database file to open */
    int iName = 1;       /* Index in azArg[] of the filename */
@@ -10122,6 +10303,10 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
  stdin_is_interactive = isatty(0);
  stdout_is_console = isatty(1);

+#ifdef SQLITE_DEBUG
+  registerOomSimulator();
+#endif
+
 #if !defined(_WIN32_WCE)
  if( getenv("SQLITE_DEBUG_BREAK") ){
    if( isatty(0) && isatty(2) ){
@@ -3617,6 +3617,59 @@ const char *sqlite3_filename_database(const char*);
 const char *sqlite3_filename_journal(const char*);
 const char *sqlite3_filename_wal(const char*);

+/*
+** CAPI3REF: Create and Destroy VFS Filenames
+**
+** These interfces are provided for use by [VFS shim] implementations and
+** are not useful outside of that context.
+**
+** The sqlite3_create_filename(D,J,W,N,P) allocates memory to hold a version of
+** database filename D with corresponding journal file J and WAL file W and
+** with N URI parameters key/values pairs in the array P.  The result from
+** sqlite3_create_filename(D,J,W,N,P) is a pointer to a database filename that
+** is safe to pass to routines like:
+** <ul>
+** <li> [sqlite3_uri_parameter()],
+** <li> [sqlite3_uri_boolean()],
+** <li> [sqlite3_uri_int64()],
+** <li> [sqlite3_uri_key()], 
+** <li> [sqlite3_filename_database()],
+** <li> [sqlite3_filename_journal()], or
+** <li> [sqlite3_filename_wal()].
+** </ul>
+** If a memory allocation error occurs, sqlite3_create_filename() might
+** return a NULL pointer.  The memory obtained from sqlite3_create_filename(X)
+** must be released by a corresponding call to sqlite3_free_filename(Y).
+**
+** The P parameter in sqlite3_create_filename(D,J,W,N,P) should be an array
+** of 2*N pointers to strings.  Each pair of pointers in this array corresponds
+** to a key and value for a query parameter.  The P parameter may be a NULL
+** pointer if N is zero.  None of the 2*N pointers in the P array may be
+** NULL pointers and key pointers should not be empty strings.
+** None of the D, J, or W parameters to sqlite3_create_filename(D,J,W,N,P) may
+** be NULL pointers, though they can be empty strings.
+**
+** The sqlite3_free_filename(Y) routine releases a memory allocation
+** previously obtained from sqlite3_create_filename().  Invoking
+** sqlite3_free_filename(Y) is a NULL pointer is a harmless no-op.
+**
+** If the Y parameter to sqlite3_free_filename(Y) is anything other
+** than a NULL pointer or a pointer previously acquired from
+** sqlite3_create_filename(), then bad things such as heap
+** corruption or segfaults may occur. The value Y should be 
+** used again after sqlite3_free_filename(Y) has been called.  This means
+** that if the [sqlite3_vfs.xOpen()] method of a VFS has been called using Y,
+** then the corresponding [sqlite3_module.xClose() method should also be
+** invoked prior to calling sqlite3_free_filename(Y).
+*/
+char *sqlite3_create_filename(
+  const char *zDatabase,
+  const char *zJournal,
+  const char *zWal,
+  int nParam,
+  const char **azParam
+);
+void sqlite3_free_filename(char*);

 /*
 ** CAPI3REF: Error Codes And Messages
@@ -4199,7 +4252,7 @@ typedef struct sqlite3_context sqlite3_context;
 ** [sqlite3_bind_parameter_index()] API if desired.  ^The index
 ** for "?NNN" parameters is the value of NNN.
 ** ^The NNN value must be between 1 and the [sqlite3_limit()]
-** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999).
+** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 32766).
 **
 ** ^The third argument is the value to bind to the parameter.
 ** ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16()
@@ -5817,51 +5870,6 @@ int sqlite3_collation_needed16(
  void(*)(void*,sqlite3*,int eTextRep,const void*)
 );

-#ifdef SQLITE_HAS_CODEC
-/*
-** Specify the key for an encrypted database.  This routine should be
-** called right after sqlite3_open().
-**
-** The code to implement this API is not available in the public release
-** of SQLite.
-*/
-int sqlite3_key(
-  sqlite3 *db,                   /* Database to be rekeyed */
-  const void *pKey, int nKey     /* The key */
-);
-int sqlite3_key_v2(
-  sqlite3 *db,                   /* Database to be rekeyed */
-  const char *zDbName,           /* Name of the database */
-  const void *pKey, int nKey     /* The key */
-);
-
-/*
-** Change the key on an open database.  If the current database is not
-** encrypted, this routine will encrypt it.  If pNew==0 or nNew==0, the
-** database is decrypted.
-**
-** The code to implement this API is not available in the public release
-** of SQLite.
-*/
-int sqlite3_rekey(
-  sqlite3 *db,                   /* Database to be rekeyed */
-  const void *pKey, int nKey     /* The new key */
-);
-int sqlite3_rekey_v2(
-  sqlite3 *db,                   /* Database to be rekeyed */
-  const char *zDbName,           /* Name of the database */
-  const void *pKey, int nKey     /* The new key */
-);
-
-/*
-** Specify the activation key for a SEE database.  Unless 
-** activated, none of the SEE routines will work.
-*/
-void sqlite3_activate_see(
-  const char *zPassPhrase        /* Activation phrase */
-);
-#endif
-
 #ifdef SQLITE_ENABLE_CEROD
 /*
 ** Specify the activation key for a CEROD database.  Unless 
@@ -330,6 +330,10 @@ struct sqlite3_api_routines {
  const char *(*filename_database)(const char*);
  const char *(*filename_journal)(const char*);
  const char *(*filename_wal)(const char*);
+  /* Version 3.32.0 and later */
+  char *(*create_filename)(const char*,const char*,const char*,
+                           int,const char**);
+  void (*free_filename)(char*);
 };

 /*
@@ -630,6 +634,9 @@ typedef int (*sqlite3_loadext_entry)(
 #define sqlite3_filename_database      sqlite3_api->filename_database
 #define sqlite3_filename_journal       sqlite3_api->filename_journal
 #define sqlite3_filename_wal           sqlite3_api->filename_wal
+/* Version 3.32.0 and later */
+#define sqlite3_create_filename        sqlite3_api->create_filename
+#define sqlite3_free_filename          sqlite3_api->free_filename
 #endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

 #if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
@@ -1264,7 +1264,6 @@ struct Schema {
 */
 #define DB_SchemaLoaded    0x0001  /* The schema has been loaded */
 #define DB_UnresetViews    0x0002  /* Some views have defined column names */
-#define DB_Empty           0x0004  /* The file is empty (length 0 bytes) */
 #define DB_ResetWanted     0x0008  /* Reset the schema when nSchemaLock==0 */

 /*
@@ -1422,7 +1421,7 @@ void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**);
 struct sqlite3 {
  sqlite3_vfs *pVfs;            /* OS Interface */
  struct Vdbe *pVdbe;           /* List of active virtual machines */
-  CollSeq *pDfltColl;           /* The default collating sequence (BINARY) */
+  CollSeq *pDfltColl;           /* BINARY collseq for the database encoding */
  sqlite3_mutex *mutex;         /* Connection mutex */
  Db *aDb;                      /* All backends */
  int nDb;                      /* Number of backends currently in use */
@@ -1631,6 +1630,7 @@ struct sqlite3 {
 #define DBFLAG_VacuumInto     0x0008  /* Currently running VACUUM INTO */
 #define DBFLAG_SchemaKnownOk  0x0010  /* Schema is known to be valid */
 #define DBFLAG_InternalFunc   0x0020  /* Allow use of internal functions */
+#define DBFLAG_EncodingFixed  0x0040  /* No longer possible to change enc. */

 /*
 ** Bits of the sqlite3.dbOptFlags field that are used by the
@@ -2153,8 +2153,11 @@ struct Table {
 */
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 #  define IsVirtual(X)      ((X)->nModuleArg)
+#  define ExprIsVtab(X)  \
+              ((X)->op==TK_COLUMN && (X)->y.pTab!=0 && (X)->y.pTab->nModuleArg)
 #else
 #  define IsVirtual(X)      0
+#  define ExprIsVtab(X)     0
 #endif

 /*
@@ -2512,10 +2515,10 @@ struct AggInfo {
 ** it uses less memory in the Expr object, which is a big memory user
 ** in systems with lots of prepared statements.  And few applications
 ** need more than about 10 or 20 variables.  But some extreme users want
-** to have prepared statements with over 32767 variables, and for them
+** to have prepared statements with over 32766 variables, and for them
 ** the option is available (at compile-time).
 */
-#if SQLITE_MAX_VARIABLE_NUMBER<=32767
+#if SQLITE_MAX_VARIABLE_NUMBER<32767
 typedef i16 ynVar;
 #else
 typedef int ynVar;
@@ -2591,6 +2594,9 @@ struct Expr {
                         ** TK_COLUMN: the value of p5 for OP_Column
                         ** TK_AGG_FUNCTION: nesting depth
                         ** TK_FUNCTION: NC_SelfRef flag if needs OP_PureFunc */
+#ifdef SQLITE_DEBUG
+  u8 vvaFlags;           /* Verification flags. */
+#endif
  u32 flags;             /* Various flags.  EP_* See below */
  union {
    char *zToken;          /* Token value. Zero terminated and dequoted */
@@ -2665,7 +2671,7 @@ struct Expr {
 #define EP_TokenOnly  0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
 #define EP_Win        0x008000 /* Contains window functions */
 #define EP_MemToken   0x010000 /* Need to sqlite3DbFree() Expr.zToken */
-#define EP_NoReduce   0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
+                  /*  0x020000 // available for reuse */
 #define EP_Unlikely   0x040000 /* unlikely() or likelihood() function */
 #define EP_ConstFunc  0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
 #define EP_CanBeNull  0x100000 /* Can be null despite NOT NULL constraint */
@@ -2679,6 +2685,7 @@ struct Expr {
 #define EP_IsTrue   0x10000000 /* Always has boolean value of TRUE */
 #define EP_IsFalse  0x20000000 /* Always has boolean value of FALSE */
 #define EP_FromDDL  0x40000000 /* Originates from sqlite_master */
+               /*   0x80000000 // Available */

 /*
 ** The EP_Propagate mask is a set of properties that automatically propagate
@@ -2697,14 +2704,24 @@ struct Expr {
 #define ExprAlwaysTrue(E)   (((E)->flags&(EP_FromJoin|EP_IsTrue))==EP_IsTrue)
 #define ExprAlwaysFalse(E)  (((E)->flags&(EP_FromJoin|EP_IsFalse))==EP_IsFalse)

+
+/* Flags for use with Expr.vvaFlags
+*/
+#define EP_NoReduce   0x01  /* Cannot EXPRDUP_REDUCE this Expr */
+#define EP_Immutable  0x02  /* Do not change this Expr node */
+
 /* The ExprSetVVAProperty() macro is used for Verification, Validation,
 ** and Accreditation only.  It works like ExprSetProperty() during VVA
 ** processes but is a no-op for delivery.
 */
 #ifdef SQLITE_DEBUG
-# define ExprSetVVAProperty(E,P)  (E)->flags|=(P)
+# define ExprSetVVAProperty(E,P)   (E)->vvaFlags|=(P)
+# define ExprHasVVAProperty(E,P)   (((E)->vvaFlags&(P))!=0)
+# define ExprClearVVAProperties(E) (E)->vvaFlags = 0
 #else
 # define ExprSetVVAProperty(E,P)
+# define ExprHasVVAProperty(E,P)   0
+# define ExprClearVVAProperties(E)
 #endif

 /*
@@ -3834,13 +3851,16 @@ int sqlite3CantopenError(int);
 #ifdef SQLITE_DEBUG
  int sqlite3NomemError(int);
  int sqlite3IoerrnomemError(int);
-  int sqlite3CorruptPgnoError(int,Pgno);
 # define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__)
 # define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__)
-# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
 #else
 # define SQLITE_NOMEM_BKPT SQLITE_NOMEM
 # define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM
+#endif
+#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO)
+  int sqlite3CorruptPgnoError(int,Pgno);
+# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
+#else
 # define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__)
 #endif

@@ -4110,11 +4130,7 @@ void sqlite3AddGenerated(Parse*,Expr*,Token*);
 void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
 int sqlite3ParseUri(const char*,const char*,unsigned int*,
                    sqlite3_vfs**,char**,char **);
-#ifdef SQLITE_HAS_CODEC
-  int sqlite3CodecQueryParameters(sqlite3*,const char*,const char*);
-#else
-# define sqlite3CodecQueryParameters(A,B,C) 0
-#endif
+#define sqlite3CodecQueryParameters(A,B,C) 0
 Btree *sqlite3DbNameToBtree(sqlite3*,const char*);

 #ifdef SQLITE_UNTESTABLE
@@ -4223,7 +4239,7 @@ void sqlite3ExprCodeGeneratedColumn(Parse*, Column*, int);
 #endif
 void sqlite3ExprCodeCopy(Parse*, Expr*, int);
 void sqlite3ExprCodeFactorable(Parse*, Expr*, int);
-int sqlite3ExprCodeAtInit(Parse*, Expr*, int);
+int sqlite3ExprCodeRunJustOnce(Parse*, Expr*, int);
 int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
 int sqlite3ExprCodeTarget(Parse*, Expr*, int);
 int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8);
@@ -4426,6 +4442,8 @@ int sqlite3VarintLen(u64 v);
 */
 #define getVarint32(A,B)  \
  (u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B)))
+#define getVarint32NR(A,B) \
+  B=(u32)*(A);if(B>=0x80)sqlite3GetVarint32((A),(u32*)&(B))
 #define putVarint32(A,B)  \
  (u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\
  sqlite3PutVarint((A),(B)))
@@ -4435,10 +4453,10 @@ int sqlite3VarintLen(u64 v);

 const char *sqlite3IndexAffinityStr(sqlite3*, Index*);
 void sqlite3TableAffinity(Vdbe*, Table*, int);
-char sqlite3CompareAffinity(Expr *pExpr, char aff2);
-int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
+char sqlite3CompareAffinity(const Expr *pExpr, char aff2);
+int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity);
 char sqlite3TableColumnAffinity(Table*,int);
-char sqlite3ExprAffinity(Expr *pExpr);
+char sqlite3ExprAffinity(const Expr *pExpr);
 int sqlite3Atoi64(const char*, i64*, int, u8);
 int sqlite3DecOrHexToI64(const char*, i64*);
 void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...);
@@ -4461,9 +4479,10 @@ int sqlite3ReadSchema(Parse *pParse);
 CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
 int sqlite3IsBinary(const CollSeq*);
 CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
-CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
-CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
-int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
+void sqlite3SetTextEncoding(sqlite3 *db, u8);
+CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr);
+CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr);
+int sqlite3ExprCollSeqMatch(Parse*,const Expr*,const Expr*);
 Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
 Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
 Expr *sqlite3ExprSkipCollate(Expr*);
@@ -4694,8 +4713,8 @@ char *sqlite3Normalize(Vdbe*, const char*);
 #endif
 int sqlite3Reprepare(Vdbe*);
 void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
-CollSeq *sqlite3ExprCompareCollSeq(Parse*,Expr*);
-CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
+CollSeq *sqlite3ExprCompareCollSeq(Parse*,const Expr*);
+CollSeq *sqlite3BinaryCompareCollSeq(Parse *, const Expr*, const Expr*);
 int sqlite3TempInMemory(const sqlite3*);
 const char *sqlite3JournalModename(int);
 #ifndef SQLITE_OMIT_WAL
@@ -131,9 +131,12 @@

 /*
 ** The maximum value of a ?nnn wildcard that the parser will accept.
+** If the value exceeds 32767 then extra space is required for the Expr
+** structure.  But otherwise, we believe that the number can be as large
+** as a signed 32-bit integer can hold.
 */
 #ifndef SQLITE_MAX_VARIABLE_NUMBER
-# define SQLITE_MAX_VARIABLE_NUMBER 999
+# define SQLITE_MAX_VARIABLE_NUMBER 32766
 #endif

 /* Maximum page size.  The upper bound on this value is 65536.  This a limit
@@ -3094,22 +3094,10 @@ deserialize_error:
  ** Change the encryption key on the currently open database.
  */
  case DB_REKEY: {
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-    int nKey;
-    void *pKey;
-#endif
    if( objc!=3 ){
      Tcl_WrongNumArgs(interp, 2, objv, "KEY");
      return TCL_ERROR;
    }
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-    pKey = Tcl_GetByteArrayFromObj(objv[2], &nKey);
-    rc = sqlite3_rekey(pDb->db, pKey, nKey);
-    if( rc ){
-      Tcl_AppendResult(interp, sqlite3_errstr(rc), (char*)0);
-      rc = TCL_ERROR;
-    }
-#endif
    break;
  }

@@ -3678,9 +3666,6 @@ static int sqliteCmdUsage(
    "HANDLE ?FILENAME? ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN?"
    " ?-nofollow BOOLEAN?"
    " ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN? ?-uri BOOLEAN?"
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-    " ?-key CODECKEY?"
-#endif
  );
  return TCL_ERROR;
 }
@@ -3715,10 +3700,6 @@ static int SQLITE_TCLAPI DbMain(
  const char *zVfs = 0;
  int flags;
  Tcl_DString translatedFilename;
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-  void *pKey = 0;
-  int nKey = 0;
-#endif
  int rc;

  /* In normal use, each TCL interpreter runs in a single thread.  So
@@ -3745,11 +3726,7 @@ static int SQLITE_TCLAPI DbMain(
      return TCL_OK;
    }
    if( strcmp(zArg,"-has-codec")==0 ){
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-      Tcl_AppendResult(interp,"1",(char*)0);
-#else
      Tcl_AppendResult(interp,"0",(char*)0);
-#endif
      return TCL_OK;
    }
    if( zArg[0]=='-' ) return sqliteCmdUsage(interp, objv);
@@ -3764,9 +3741,7 @@ static int SQLITE_TCLAPI DbMain(
    if( i==objc-1 ) return sqliteCmdUsage(interp, objv);
    i++;
    if( strcmp(zArg,"-key")==0 ){
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-      pKey = Tcl_GetByteArrayFromObj(objv[i], &nKey);
-#endif
+      /* no-op */
    }else if( strcmp(zArg, "-vfs")==0 ){
      zVfs = Tcl_GetString(objv[i]);
    }else if( strcmp(zArg, "-readonly")==0 ){
@@ -3842,11 +3817,6 @@ static int SQLITE_TCLAPI DbMain(
  }else{
    zErrMsg = sqlite3_mprintf("%s", sqlite3_errstr(rc));
  }
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-  if( p->db ){
-    sqlite3_key(p->db, pKey, nKey);
-  }
-#endif
  if( p->db==0 ){
    Tcl_SetResult(interp, zErrMsg, TCL_VOLATILE);
    Tcl_Free((char*)p);
@@ -655,20 +655,6 @@ static int SQLITE_TCLAPI test_key(
  int argc,              /* Number of arguments */
  char **argv            /* Text of each argument */
 ){
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-  sqlite3 *db;
-  const char *zKey;
-  int nKey;
-  if( argc!=3 ){
-    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-       " FILENAME\"", 0);
-    return TCL_ERROR;
-  }
-  if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
-  zKey = argv[2];
-  nKey = strlen(zKey);
-  sqlite3_key(db, zKey, nKey);
-#endif
  return TCL_OK;
 }

@@ -683,20 +669,6 @@ static int SQLITE_TCLAPI test_rekey(
  int argc,              /* Number of arguments */
  char **argv            /* Text of each argument */
 ){
-#ifdef SQLITE_HAS_CODEC
-  sqlite3 *db;
-  const char *zKey;
-  int nKey;
-  if( argc!=3 ){
-    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
-       " FILENAME\"", 0);
-    return TCL_ERROR;
-  }
-  if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
-  zKey = argv[2];
-  nKey = strlen(zKey);
-  sqlite3_rekey(db, zKey, nKey);
-#endif
  return TCL_OK;
 }

@@ -226,11 +226,7 @@ static void set_options(Tcl_Interp *interp){
  Tcl_SetVar2(interp, "sqlite_options", "json1", "0", TCL_GLOBAL_ONLY);
 #endif

-#ifdef SQLITE_HAS_CODEC
-  Tcl_SetVar2(interp, "sqlite_options", "has_codec", "1", TCL_GLOBAL_ONLY);
-#else
  Tcl_SetVar2(interp, "sqlite_options", "has_codec", "0", TCL_GLOBAL_ONLY);
-#endif

 #ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS
  Tcl_SetVar2(interp, "sqlite_options", "like_match_blobs", "0", TCL_GLOBAL_ONLY);
@@ -267,11 +267,14 @@ static int multiplexSubFilename(multiplexGroup *pGroup, int iChunk){
  if( pGroup->zName && pGroup->aReal[iChunk].z==0 ){
    char *z;
    int n = pGroup->nName;
-    pGroup->aReal[iChunk].z = z = sqlite3_malloc64( n+5 );
+    z = sqlite3_malloc64( n+5 );
    if( z==0 ){
      return SQLITE_NOMEM;
    }
    multiplexFilename(pGroup->zName, pGroup->nName, pGroup->flags, iChunk, z);
+    pGroup->aReal[iChunk].z = sqlite3_create_filename(z,"","",0,0);
+    sqlite3_free(z);
+    if( pGroup->aReal[iChunk].z==0 ) return SQLITE_NOMEM;
  }
  return SQLITE_OK;
 }
@@ -438,7 +441,7 @@ static void multiplexSubClose(
    }
    sqlite3_free(pGroup->aReal[iChunk].p);
  }
-  sqlite3_free(pGroup->aReal[iChunk].z);
+  sqlite3_free_filename(pGroup->aReal[iChunk].z);
  memset(&pGroup->aReal[iChunk], 0, sizeof(pGroup->aReal[iChunk]));
 }

@@ -530,7 +533,7 @@ static int multiplexOpen(
        pGroup->szChunk += 65536;
      }
    }
-    pGroup->flags = flags;
+    pGroup->flags = (flags & ~SQLITE_OPEN_URI);
    rc = multiplexSubFilename(pGroup, 1);
    if( rc==SQLITE_OK ){
      pSubOpen = multiplexSubOpen(pGroup, 0, &rc, pOutFlags, 0);
@@ -287,22 +287,6 @@ static int SQLITE_TCLAPI sqlthread_open(

  zFilename = Tcl_GetString(objv[2]);
  sqlite3_open(zFilename, &db);
-#ifdef SQLITE_HAS_CODEC
-  if( db && objc>=4 ){
-    const char *zKey;
-    int nKey;
-    int rc;
-    zKey = Tcl_GetStringFromObj(objv[3], &nKey);
-    rc = sqlite3_key(db, zKey, nKey);
-    if( rc!=SQLITE_OK ){
-      char *zErrMsg = sqlite3_mprintf("error %d: %s", rc, sqlite3_errmsg(db));
-      sqlite3_close(db);
-      Tcl_AppendResult(interp, zErrMsg, (char*)0);
-      sqlite3_free(zErrMsg);
-      return TCL_ERROR;
-    }
-  }
-#endif
  Md5_Register(db, 0, 0);
  sqlite3_busy_handler(db, xBusy, 0);
  
@@ -398,14 +398,14 @@ void sqlite3TreeViewWinFunc(TreeView *pView, const Window *pWin, u8 more){
 void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){
  const char *zBinOp = 0;   /* Binary operator */
  const char *zUniOp = 0;   /* Unary operator */
-  char zFlgs[60];
+  char zFlgs[200];
  pView = sqlite3TreeViewPush(pView, moreToFollow);
  if( pExpr==0 ){
    sqlite3TreeViewLine(pView, "nil");
    sqlite3TreeViewPop(pView);
    return;
  }
-  if( pExpr->flags || pExpr->affExpr ){
+  if( pExpr->flags || pExpr->affExpr || pExpr->vvaFlags ){
    StrAccum x;
    sqlite3StrAccumInit(&x, 0, zFlgs, sizeof(zFlgs), 0);
    sqlite3_str_appendf(&x, " fg.af=%x.%c",
@@ -416,6 +416,9 @@ void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){
    if( ExprHasProperty(pExpr, EP_FromDDL) ){
      sqlite3_str_appendf(&x, " DDL");
    }
+    if( ExprHasVVAProperty(pExpr, EP_Immutable) ){
+      sqlite3_str_appendf(&x, " IMMUTABLE");
+    }
    sqlite3StrAccumFinish(&x);
  }else{
    zFlgs[0] = 0;
@@ -522,6 +525,7 @@ void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){
    case TK_RSHIFT:  zBinOp = "RSHIFT"; break;
    case TK_CONCAT:  zBinOp = "CONCAT"; break;
    case TK_DOT:     zBinOp = "DOT";    break;
+    case TK_LIMIT:   zBinOp = "LIMIT";  break;

    case TK_UMINUS:  zUniOp = "UMINUS"; break;
    case TK_UPLUS:   zUniOp = "UPLUS";  break;
@@ -616,7 +616,9 @@ void sqlite3Update(
      }
      sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, iBaseCur,
                                 aToOpen, 0, 0);
-      if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce);
+      if( addrOnce ){
+        sqlite3VdbeJumpHereOrPopInst(v, addrOnce);
+      }
    }
  
    /* Top of the update loop */
@@ -105,26 +105,6 @@ static const unsigned char sqlite3Utf8Trans1[] = {
  }                                                                 \
 }

-#define READ_UTF16LE(zIn, TERM, c){                                   \
-  c = (*zIn++);                                                       \
-  c += ((*zIn++)<<8);                                                 \
-  if( c>=0xD800 && c<0xE000 && TERM ){                                \
-    int c2 = (*zIn++);                                                \
-    c2 += ((*zIn++)<<8);                                              \
-    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
-  }                                                                   \
-}
-
-#define READ_UTF16BE(zIn, TERM, c){                                   \
-  c = ((*zIn++)<<8);                                                  \
-  c += (*zIn++);                                                      \
-  if( c>=0xD800 && c<0xE000 && TERM ){                                \
-    int c2 = ((*zIn++)<<8);                                           \
-    c2 += (*zIn++);                                                   \
-    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
-  }                                                                   \
-}
-
 /*
 ** Translate a single UTF-8 character.  Return the unicode value.
 **
@@ -301,13 +281,43 @@ SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desiredEnc){
    if( pMem->enc==SQLITE_UTF16LE ){
      /* UTF-16 Little-endian -> UTF-8 */
      while( zIn<zTerm ){
-        READ_UTF16LE(zIn, zIn<zTerm, c); 
+        c = *(zIn++);
+        c += (*(zIn++))<<8;
+        if( c>=0xd800 && c<0xe000 ){
+          if( c>=0xdc00 || zIn>=zTerm ){
+            c = 0xfffd;
+          }else{
+            int c2 = *(zIn++);
+            c2 += (*(zIn++))<<8;
+            if( c2<0xdc00 || c2>=0xe000 ){
+              zIn -= 2;
+              c = 0xfffd;
+            }else{
+              c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+            }
+          }
+        }
        WRITE_UTF8(z, c);
      }
    }else{
      /* UTF-16 Big-endian -> UTF-8 */
      while( zIn<zTerm ){
-        READ_UTF16BE(zIn, zIn<zTerm, c); 
+        c = (*(zIn++))<<8;
+        c += *(zIn++);
+        if( c>=0xd800 && c<0xe000 ){
+          if( c>=0xdc00 || zIn>=zTerm ){
+            c = 0xfffd;
+          }else{
+            int c2 = (*(zIn++))<<8;
+            c2 += *(zIn++);
+            if( c2<0xdc00 || c2>=0xe000 ){
+              zIn -= 2;
+              c = 0xfffd;
+            }else{
+              c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+            }
+          }
+        }
        WRITE_UTF8(z, c);
      }
    }
@@ -466,18 +476,15 @@ int sqlite3Utf16ByteLen(const void *zIn, int nChar){
  unsigned char const *z = zIn;
  int n = 0;
  
-  if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
-    while( n<nChar ){
-      READ_UTF16BE(z, 1, c);
-      n++;
-    }
-  }else{
-    while( n<nChar ){
-      READ_UTF16LE(z, 1, c);
-      n++;
-    }
+  if( SQLITE_UTF16NATIVE==SQLITE_UTF16LE ) z++;
+  while( n<nChar ){
+    c = z[0];
+    z += 2;
+    if( c>=0xd8 && c<0xdc && z[0]>=0xdc && z[0]<0xe0 ) z += 2;
+    n++;
  }
-  return (int)(z-(unsigned char const *)zIn);
+  return (int)(z-(unsigned char const *)zIn) 
+              - (SQLITE_UTF16NATIVE==SQLITE_UTF16LE);
 }

 #if defined(SQLITE_TEST)
@@ -507,30 +514,6 @@ void sqlite3UtfSelfTest(void){
    assert( c==t );
    assert( (z-zBuf)==n );
  }
-  for(i=0; i<0x00110000; i++){
-    if( i>=0xD800 && i<0xE000 ) continue;
-    z = zBuf;
-    WRITE_UTF16LE(z, i);
-    n = (int)(z-zBuf);
-    assert( n>0 && n<=4 );
-    z[0] = 0;
-    z = zBuf;
-    READ_UTF16LE(z, 1, c);
-    assert( c==i );
-    assert( (z-zBuf)==n );
-  }
-  for(i=0; i<0x00110000; i++){
-    if( i>=0xD800 && i<0xE000 ) continue;
-    z = zBuf;
-    WRITE_UTF16BE(z, i);
-    n = (int)(z-zBuf);
-    assert( n>0 && n<=4 );
-    z[0] = 0;
-    z = zBuf;
-    READ_UTF16BE(z, 1, c);
-    assert( c==i );
-    assert( (z-zBuf)==n );
-  }
 }
 #endif /* SQLITE_TEST */
 #endif /* SQLITE_OMIT_UTF16 */
@@ -1256,7 +1256,7 @@ u8 sqlite3HexToInt(int h){
  return (u8)(h & 0xf);
 }

-#if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
+#if !defined(SQLITE_OMIT_BLOB_LITERAL)
 /*
 ** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
 ** value.  Return a pointer to its binary value.  Space to hold the
@@ -1277,7 +1277,7 @@ void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){
  }
  return zBlob;
 }
-#endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */
+#endif /* !SQLITE_OMIT_BLOB_LITERAL */

 /*
 ** Log an error that is an API call on a connection pointer that should
@@ -235,17 +235,6 @@ SQLITE_NOINLINE int sqlite3RunVacuum(
  }
  nRes = sqlite3BtreeGetOptimalReserve(pMain);

-  /* A VACUUM cannot change the pagesize of an encrypted database. */
-#ifdef SQLITE_HAS_CODEC
-  if( db->nextPagesize ){
-    extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*);
-    int nKey;
-    char *zKey;
-    sqlite3CodecGetKey(db, iDb, (void**)&zKey, &nKey);
-    if( nKey ) db->nextPagesize = 0;
-  }
-#endif
-
  sqlite3BtreeSetCacheSize(pTemp, db->aDb[iDb].pSchema->cache_size);
  sqlite3BtreeSetSpillSize(pTemp, sqlite3BtreeSetSpillSize(pMain,0));
  sqlite3BtreeSetPagerFlags(pTemp, PAGER_SYNCHRONOUS_OFF|PAGER_CACHESPILL);
@@ -1544,7 +1544,6 @@ case OP_Concat: {           /* same as TK_CONCAT, in1, in2, out3 */
  pIn1 = &aMem[pOp->p1];
  pIn2 = &aMem[pOp->p2];
  pOut = &aMem[pOp->p3];
-  testcase( pIn1==pIn2 );
  testcase( pOut==pIn2 );
  assert( pIn1!=pOut );
  flags1 = pIn1->flags;
@@ -2075,7 +2074,7 @@ case OP_Ge: {             /* same as TK_GE, jump, in1, in3 */
      if( (flags1 | flags3)&MEM_Str ){
        if( (flags1 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
          applyNumericAffinity(pIn1,0);
-          testcase( flags3!=pIn3->flags );
+          assert( flags3==pIn3->flags );
          flags3 = pIn3->flags;
        }
        if( (flags3 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
@@ -2098,7 +2097,7 @@ case OP_Ge: {             /* same as TK_GE, jump, in1, in3 */
        sqlite3VdbeMemStringify(pIn1, encoding, 1);
        testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );
        flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask);
-        if( pIn1==pIn3 ) flags3 = flags1 | MEM_Str;
+        if( NEVER(pIn1==pIn3) ) flags3 = flags1 | MEM_Str;
      }
      if( (flags3 & MEM_Str)==0 && (flags3&(MEM_Int|MEM_Real|MEM_IntReal))!=0 ){
        testcase( pIn3->flags & MEM_Int );
@@ -2713,7 +2712,7 @@ case OP_Column: {
      /* Make sure zData points to enough of the record to cover the header. */
      if( pC->aRow==0 ){
        memset(&sMem, 0, sizeof(sMem));
-        rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, 0, aOffset[0], &sMem);
+        rc = sqlite3VdbeMemFromBtreeZeroOffset(pC->uc.pCursor,aOffset[0],&sMem);
        if( rc!=SQLITE_OK ) goto abort_due_to_error;
        zData = (u8*)sMem.z;
      }else{
@@ -5209,7 +5208,7 @@ case OP_RowData: {
    goto too_big;
  }
  testcase( n==0 );
-  rc = sqlite3VdbeMemFromBtree(pCrsr, 0, n, pOut);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCrsr, n, pOut);
  if( rc ) goto abort_due_to_error;
  if( !pOp->p3 ) Deephemeralize(pOut);
  UPDATE_MAX_BLOBSIZE(pOut);
@@ -5587,14 +5586,6 @@ next_tail:
 ** This instruction only works for indices.  The equivalent instruction
 ** for tables is OP_Insert.
 */
-/* Opcode: SorterInsert P1 P2 * * *
-** Synopsis: key=r[P2]
-**
-** Register P2 holds an SQL index key made using the
-** MakeRecord instructions.  This opcode writes that key
-** into the sorter P1.  Data for the entry is nil.
-*/
-case OP_SorterInsert:       /* in2 */
 case OP_IdxInsert: {        /* in2 */
  VdbeCursor *pC;
  BtreePayload x;
@@ -5603,28 +5594,49 @@ case OP_IdxInsert: {        /* in2 */
  pC = p->apCsr[pOp->p1];
  sqlite3VdbeIncrWriteCounter(p, pC);
  assert( pC!=0 );
-  assert( isSorter(pC)==(pOp->opcode==OP_SorterInsert) );
+  assert( !isSorter(pC) );
  pIn2 = &aMem[pOp->p2];
  assert( pIn2->flags & MEM_Blob );
  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
-  assert( pC->eCurType==CURTYPE_BTREE || pOp->opcode==OP_SorterInsert );
+  assert( pC->eCurType==CURTYPE_BTREE );
  assert( pC->isTable==0 );
  rc = ExpandBlob(pIn2);
  if( rc ) goto abort_due_to_error;
-  if( pOp->opcode==OP_SorterInsert ){
-    rc = sqlite3VdbeSorterWrite(pC, pIn2);
-  }else{
-    x.nKey = pIn2->n;
-    x.pKey = pIn2->z;
-    x.aMem = aMem + pOp->p3;
-    x.nMem = (u16)pOp->p4.i;
-    rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
-         (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), 
-        ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
-        );
-    assert( pC->deferredMoveto==0 );
-    pC->cacheStatus = CACHE_STALE;
-  }
+  x.nKey = pIn2->n;
+  x.pKey = pIn2->z;
+  x.aMem = aMem + pOp->p3;
+  x.nMem = (u16)pOp->p4.i;
+  rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
+       (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)), 
+      ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
+      );
+  assert( pC->deferredMoveto==0 );
+  pC->cacheStatus = CACHE_STALE;
+  if( rc) goto abort_due_to_error;
+  break;
+}
+
+/* Opcode: SorterInsert P1 P2 * * *
+** Synopsis: key=r[P2]
+**
+** Register P2 holds an SQL index key made using the
+** MakeRecord instructions.  This opcode writes that key
+** into the sorter P1.  Data for the entry is nil.
+*/
+case OP_SorterInsert: {     /* in2 */
+  VdbeCursor *pC;
+
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  pC = p->apCsr[pOp->p1];
+  sqlite3VdbeIncrWriteCounter(p, pC);
+  assert( pC!=0 );
+  assert( isSorter(pC) );
+  pIn2 = &aMem[pOp->p2];
+  assert( pIn2->flags & MEM_Blob );
+  assert( pC->isTable==0 );
+  rc = ExpandBlob(pIn2);
+  if( rc ) goto abort_due_to_error;
+  rc = sqlite3VdbeSorterWrite(pC, pIn2);
  if( rc) goto abort_due_to_error;
  break;
 }
@@ -6463,7 +6475,7 @@ case OP_Program: {        /* jump */
    int i;
    for(i=0; i<p->nMem; i++){
      aMem[i].pScopyFrom = 0;  /* Prevent false-positive AboutToChange() errs */
-      aMem[i].flags |= MEM_Undefined; /* Cause a fault if this reg is reused */
+      MemSetTypeFlag(&aMem[i], MEM_Undefined); /* Fault if this reg is reused */
    }
  }
 #endif
@@ -7574,7 +7586,7 @@ case OP_MaxPgcnt: {            /* out2 */
 #endif

 /* Opcode: Function P1 P2 P3 P4 *
-** Synopsis: r[P3]=func(r[P2@P5])
+** Synopsis: r[P3]=func(r[P2@NP])
 **
 ** Invoke a user function (P4 is a pointer to an sqlite3_context object that
 ** contains a pointer to the function to be run) with arguments taken
@@ -7593,7 +7605,7 @@ case OP_MaxPgcnt: {            /* out2 */
 ** See also: AggStep, AggFinal, PureFunc
 */
 /* Opcode: PureFunc P1 P2 P3 P4 *
-** Synopsis: r[P3]=func(r[P2@P5])
+** Synopsis: r[P3]=func(r[P2@NP])
 **
 ** Invoke a user function (P4 is a pointer to an sqlite3_context object that
 ** contains a pointer to the function to be run) with arguments taken
@@ -230,6 +230,7 @@ void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
 void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
 void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
 void sqlite3VdbeJumpHere(Vdbe*, int addr);
+void sqlite3VdbeJumpHereOrPopInst(Vdbe*, int addr);
 int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
 int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
 #ifdef SQLITE_DEBUG
@@ -532,6 +532,7 @@ int sqlite3VdbeMemRealify(Mem*);
 int sqlite3VdbeMemNumerify(Mem*);
 int sqlite3VdbeMemCast(Mem*,u8,u8);
 int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*);
+int sqlite3VdbeMemFromBtreeZeroOffset(BtCursor*,u32,Mem*);
 void sqlite3VdbeMemRelease(Mem *p);
 int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
 #ifndef SQLITE_OMIT_WINDOWFUNC
@@ -1065,6 +1065,34 @@ void sqlite3VdbeJumpHere(Vdbe *p, int addr){
  sqlite3VdbeChangeP2(p, addr, p->nOp);
 }

+/*
+** Change the P2 operand of the jump instruction at addr so that
+** the jump lands on the next opcode.  Or if the jump instruction was
+** the previous opcode (and is thus a no-op) then simply back up
+** the next instruction counter by one slot so that the jump is
+** overwritten by the next inserted opcode.
+**
+** This routine is an optimization of sqlite3VdbeJumpHere() that
+** strives to omit useless byte-code like this:
+**
+**        7   Once 0 8 0
+**        8   ...
+*/
+void sqlite3VdbeJumpHereOrPopInst(Vdbe *p, int addr){
+  if( addr==p->nOp-1 ){
+    assert( p->aOp[addr].opcode==OP_Once
+         || p->aOp[addr].opcode==OP_If
+         || p->aOp[addr].opcode==OP_FkIfZero );
+    assert( p->aOp[addr].p4type==0 );
+#ifdef SQLITE_VDBE_COVERAGE
+    sqlite3VdbeGetOp(p,-1)->iSrcLine = 0;  /* Erase VdbeCoverage() macros */
+#endif
+    p->nOp--;
+  }else{
+    sqlite3VdbeChangeP2(p, addr, p->nOp);
+  }
+}
+

 /*
 ** If the input FuncDef structure is ephemeral, then free it.  If
@@ -1445,8 +1473,11 @@ static int displayComment(
  const char *zOpName;
  const char *zSynopsis;
  int nOpName;
-  int ii, jj;
+  int ii;
  char zAlt[50];
+  StrAccum x;
+  sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
+
  zOpName = sqlite3OpcodeName(pOp->opcode);
  nOpName = sqlite3Strlen30(zOpName);
  if( zOpName[nOpName+1] ){
@@ -1461,51 +1492,60 @@ static int displayComment(
      }
      zSynopsis = zAlt;
    }
-    for(ii=jj=0; jj<nTemp-1 && (c = zSynopsis[ii])!=0; ii++){
+    for(ii=0; (c = zSynopsis[ii])!=0; ii++){
      if( c=='P' ){
        c = zSynopsis[++ii];
        if( c=='4' ){
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%s", zP4);
+          sqlite3_str_appendall(&x, zP4);
        }else if( c=='X' ){
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%s", pOp->zComment);
+          sqlite3_str_appendall(&x, pOp->zComment);
          seenCom = 1;
        }else{
          int v1 = translateP(c, pOp);
          int v2;
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%d", v1);
          if( strncmp(zSynopsis+ii+1, "@P", 2)==0 ){
            ii += 3;
-            jj += sqlite3Strlen30(zTemp+jj);
            v2 = translateP(zSynopsis[ii], pOp);
            if( strncmp(zSynopsis+ii+1,"+1",2)==0 ){
              ii += 2;
              v2++;
            }
-            if( v2>1 ){
-              sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1);
+            if( v2<2 ){
+              sqlite3_str_appendf(&x, "%d", v1);
+            }else{
+              sqlite3_str_appendf(&x, "%d..%d", v1, v1+v2-1);
+            }
+          }else if( strncmp(zSynopsis+ii+1, "@NP", 3)==0 ){
+            sqlite3_context *pCtx = pOp->p4.pCtx;
+            if( pOp->p4type!=P4_FUNCCTX || pCtx->argc==1 ){
+              sqlite3_str_appendf(&x, "%d", v1);
+            }else if( pCtx->argc>1 ){
+              sqlite3_str_appendf(&x, "%d..%d", v1, v1+pCtx->argc-1);
+            }else{
+              assert( x.nChar>2 );
+              x.nChar -= 2;
+              ii++;
+            }
+            ii += 3;
+          }else{
+            sqlite3_str_appendf(&x, "%d", v1);
+            if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
+              ii += 4;
            }
-          }else if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
-            ii += 4;
          }
        }
-        jj += sqlite3Strlen30(zTemp+jj);
      }else{
-        zTemp[jj++] = c;
+        sqlite3_str_appendchar(&x, 1, c);
      }
    }
-    if( !seenCom && jj<nTemp-5 && pOp->zComment ){
-      sqlite3_snprintf(nTemp-jj, zTemp+jj, "; %s", pOp->zComment);
-      jj += sqlite3Strlen30(zTemp+jj);
+    if( !seenCom && pOp->zComment ){
+      sqlite3_str_appendf(&x, "; %s", pOp->zComment);
    }
-    if( jj<nTemp ) zTemp[jj] = 0;
  }else if( pOp->zComment ){
-    sqlite3_snprintf(nTemp, zTemp, "%s", pOp->zComment);
-    jj = sqlite3Strlen30(zTemp);
-  }else{
-    zTemp[0] = 0;
-    jj = 0;
+    sqlite3_str_appendall(&x, pOp->zComment);
  }
-  return jj;
+  sqlite3StrAccumFinish(&x);
+  return x.nChar;
 }
 #endif /* SQLITE_DEBUG */

@@ -1618,8 +1658,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
    }
 #endif
    case P4_COLLSEQ: {
+      static const char *const encnames[] = {"?", "8", "16LE", "16BE"};
      CollSeq *pColl = pOp->p4.pColl;
-      sqlite3_str_appendf(&x, "(%.20s)", pColl->zName);
+      assert( pColl->enc>=0 && pColl->enc<4 );
+      sqlite3_str_appendf(&x, "%.18s-%s", pColl->zName,
+                          encnames[pColl->enc]);
      break;
    }
    case P4_FUNCDEF: {
@@ -3500,7 +3543,7 @@ int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){
  assert( p->eCurType==CURTYPE_BTREE || p->eCurType==CURTYPE_PSEUDO );
  if( p->deferredMoveto ){
    int iMap;
-    if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){
+    if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 && !p->nullRow ){
      *pp = p->pAltCursor;
      *piCol = iMap - 1;
      return SQLITE_OK;
@@ -4503,7 +4546,7 @@ int sqlite3VdbeRecordCompareWithSkip(

    /* RHS is a string */
    else if( pRhs->flags & MEM_Str ){
-      getVarint32(&aKey1[idx1], serial_type);
+      getVarint32NR(&aKey1[idx1], serial_type);
      testcase( serial_type==12 );
      if( serial_type<12 ){
        rc = -1;
@@ -4537,7 +4580,7 @@ int sqlite3VdbeRecordCompareWithSkip(
    /* RHS is a blob */
    else if( pRhs->flags & MEM_Blob ){
      assert( (pRhs->flags & MEM_Zero)==0 || pRhs->n==0 );
-      getVarint32(&aKey1[idx1], serial_type);
+      getVarint32NR(&aKey1[idx1], serial_type);
      testcase( serial_type==12 );
      if( serial_type<12 || (serial_type & 0x01) ){
        rc = -1;
@@ -4726,7 +4769,10 @@ static int vdbeRecordCompareString(

  assert( pPKey2->aMem[0].flags & MEM_Str );
  vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
-  getVarint32(&aKey1[1], serial_type);
+  serial_type = (u8)(aKey1[1]);
+  if( serial_type >= 0x80 ){
+    sqlite3GetVarint32(&aKey1[1], (u32*)&serial_type);
+  }
  if( serial_type<12 ){
    res = pPKey2->r1;      /* (pKey1/nKey1) is a number or a null */
  }else if( !(serial_type & 0x01) ){ 
@@ -4847,13 +4893,13 @@ int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){

  /* Read in the complete content of the index entry */
  sqlite3VdbeMemInit(&m, db, 0);
-  rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
  if( rc ){
    return rc;
  }

  /* The index entry must begin with a header size */
-  (void)getVarint32((u8*)m.z, szHdr);
+  getVarint32NR((u8*)m.z, szHdr);
  testcase( szHdr==3 );
  testcase( szHdr==m.n );
  testcase( szHdr>0x7fffffff );
@@ -4864,7 +4910,7 @@ int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){

  /* The last field of the index should be an integer - the ROWID.
  ** Verify that the last entry really is an integer. */
-  (void)getVarint32((u8*)&m.z[szHdr-1], typeRowid);
+  getVarint32NR((u8*)&m.z[szHdr-1], typeRowid);
  testcase( typeRowid==1 );
  testcase( typeRowid==2 );
  testcase( typeRowid==3 );
@@ -4929,7 +4975,7 @@ int sqlite3VdbeIdxKeyCompare(
    return SQLITE_CORRUPT_BKPT;
  }
  sqlite3VdbeMemInit(&m, db, 0);
-  rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
  if( rc ){
    return rc;
  }
@@ -961,7 +961,7 @@ void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
        sqlite3DebugPrintf("Invalidate R[%d] due to change in R[%d]\n",
          (int)(pX - pVdbe->aMem), (int)(pMem - pVdbe->aMem));
      }
-      /* If pX is marked as a shallow copy of pMem, then verify that
+      /* If pX is marked as a shallow copy of pMem, then try to verify that
      ** no significant changes have been made to pX since the OP_SCopy.
      ** A significant change would indicated a missed call to this
      ** function for pX.  Minor changes, such as adding or removing a
@@ -969,11 +969,6 @@ void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
      ** same. */
      mFlags = pMem->flags & pX->flags & pX->mScopyFlags;
      assert( (mFlags&(MEM_Int|MEM_IntReal))==0 || pMem->u.i==pX->u.i );
-      /* assert( (mFlags&MEM_Real)==0 || pMem->u.r==pX->u.r ); */
-      /*                                          ^^           */
-      /*       Cannot reliably compare doubles for equality    */
-      assert( (mFlags&MEM_Str)==0  || (pMem->n==pX->n && pMem->z==pX->z) );
-      assert( (mFlags&MEM_Blob)==0  || sqlite3BlobCompare(pMem,pX)==0 );
      
      /* pMem is the register that is changing.  But also mark pX as
      ** undefined so that we can quickly detect the shallow-copy error */
@@ -1169,7 +1164,7 @@ int sqlite3VdbeMemSetStr(
 ** If this routine fails for any reason (malloc returns NULL or unable
 ** to read from the disk) then the pMem is left in an inconsistent state.
 */
-static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
+int sqlite3VdbeMemFromBtree(
  BtCursor *pCur,   /* Cursor pointing at record to retrieve. */
  u32 offset,       /* Offset from the start of data to return bytes from. */
  u32 amt,          /* Number of bytes to return. */
@@ -1192,13 +1187,11 @@ static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
  }
  return rc;
 }
-int sqlite3VdbeMemFromBtree(
+int sqlite3VdbeMemFromBtreeZeroOffset(
  BtCursor *pCur,   /* Cursor pointing at record to retrieve. */
-  u32 offset,       /* Offset from the start of data to return bytes from. */
  u32 amt,          /* Number of bytes to return. */
  Mem *pMem         /* OUT: Return data in this Mem structure. */
 ){
-  char *zData;        /* Data from the btree layer */
  u32 available = 0;  /* Number of bytes available on the local btree page */
  int rc = SQLITE_OK; /* Return code */

@@ -1208,15 +1201,14 @@ int sqlite3VdbeMemFromBtree(
  /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert() 
  ** that both the BtShared and database handle mutexes are held. */
  assert( !sqlite3VdbeMemIsRowSet(pMem) );
-  zData = (char *)sqlite3BtreePayloadFetch(pCur, &available);
-  assert( zData!=0 );
+  pMem->z = (char *)sqlite3BtreePayloadFetch(pCur, &available);
+  assert( pMem->z!=0 );

-  if( offset+amt<=available ){
-    pMem->z = &zData[offset];
+  if( amt<=available ){
    pMem->flags = MEM_Blob|MEM_Ephem;
    pMem->n = (int)amt;
  }else{
-    rc = vdbeMemFromBtreeResize(pCur, offset, amt, pMem);
+    rc = sqlite3VdbeMemFromBtree(pCur, 0, amt, pMem);
  }

  return rc;
@@ -815,8 +815,8 @@ static int vdbeSorterCompareText(
  int n2;
  int res;

-  getVarint32(&p1[1], n1);
-  getVarint32(&p2[1], n2);
+  getVarint32NR(&p1[1], n1);
+  getVarint32NR(&p2[1], n2);
  res = memcmp(v1, v2, (MIN(n1, n2) - 13)/2);
  if( res==0 ){
    res = n1 - n2;
@@ -1773,7 +1773,7 @@ int sqlite3VdbeSorterWrite(

  assert( pCsr->eCurType==CURTYPE_SORTER );
  pSorter = pCsr->uc.pSorter;
-  getVarint32((const u8*)&pVal->z[1], t);
+  getVarint32NR((const u8*)&pVal->z[1], t);
  if( t>0 && t<10 && t!=7 ){
    pSorter->typeMask &= SORTER_TYPE_INTEGER;
  }else if( t>10 && (t & 0x01) ){
@@ -3253,11 +3253,7 @@ static int walWriteOneFrame(
  int rc;                         /* Result code from subfunctions */
  void *pData;                    /* Data actually written */
  u8 aFrame[WAL_FRAME_HDRSIZE];   /* Buffer to assemble frame-header in */
-#if defined(SQLITE_HAS_CODEC)
-  if( (pData = sqlite3PagerCodec(pPage))==0 ) return SQLITE_NOMEM_BKPT;
-#else
  pData = pPage->pData;
-#endif
  walEncodeFrame(p->pWal, pPage->pgno, nTruncate, pData, aFrame);
  rc = walWriteToLog(p, aFrame, sizeof(aFrame), iOffset);
  if( rc ) return rc;
@@ -3440,11 +3436,7 @@ int sqlite3WalFrames(
        if( pWal->iReCksum==0 || iWrite<pWal->iReCksum ){
          pWal->iReCksum = iWrite;
        }
-#if defined(SQLITE_HAS_CODEC)
-        if( (pData = sqlite3PagerCodec(p))==0 ) return SQLITE_NOMEM;
-#else
        pData = p->pData;
-#endif
        rc = sqlite3OsWrite(pWal->pWalFd, pData, szPage, iOff);
        if( rc ) return rc;
        p->flags &= ~PGHDR_WAL_APPEND;
@@ -2298,7 +2298,9 @@ static void whereLoopOutputAdjust(
        /* In the absence of explicit truth probabilities, use heuristics to
        ** guess a reasonable truth probability. */
        pLoop->nOut--;
-        if( pTerm->eOperator&(WO_EQ|WO_IS) ){
+        if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0
+         && (pTerm->wtFlags & TERM_HIGHTRUTH)==0  /* tag-20200224-1 */
+        ){
          Expr *pRight = pTerm->pExpr->pRight;
          int k = 0;
          testcase( pTerm->pExpr->op==TK_IS );
@@ -2307,7 +2309,10 @@ static void whereLoopOutputAdjust(
          }else{
            k = 20;
          }
-          if( iReduce<k ) iReduce = k;
+          if( iReduce<k ){
+            pTerm->wtFlags |= TERM_HEURTRUTH;
+            iReduce = k;
+          }
        }
      }
    }
@@ -2489,9 +2494,9 @@ static int whereLoopAddBtreeIndex(
    }

    if( IsUniqueIndex(pProbe) && saved_nEq==pProbe->nKeyCol-1 ){
-      pBuilder->bldFlags |= SQLITE_BLDF_UNIQUE;
+      pBuilder->bldFlags1 |= SQLITE_BLDF1_UNIQUE;
    }else{
-      pBuilder->bldFlags |= SQLITE_BLDF_INDEXED;
+      pBuilder->bldFlags1 |= SQLITE_BLDF1_INDEXED;
    }
    pNew->wsFlags = saved_wsFlags;
    pNew->u.btree.nEq = saved_nEq;
@@ -2656,6 +2661,27 @@ static int whereLoopAddBtreeIndex(
          if( rc!=SQLITE_OK ) break;          /* Jump out of the pTerm loop */
          if( nOut ){
            pNew->nOut = sqlite3LogEst(nOut);
+            if( nEq==1
+             /* TUNING: Mark terms as "low selectivity" if they seem likely
+             ** to be true for half or more of the rows in the table.
+             ** See tag-202002240-1 */
+             && pNew->nOut+10 > pProbe->aiRowLogEst[0]
+            ){
+#if WHERETRACE_ENABLED /* 0x01 */
+              if( sqlite3WhereTrace & 0x01 ){
+                sqlite3DebugPrintf(
+                   "STAT4 determines term has low selectivity:\n");
+                sqlite3WhereTermPrint(pTerm, 999);
+              }
+#endif
+              pTerm->wtFlags |= TERM_HIGHTRUTH;
+              if( pTerm->wtFlags & TERM_HEURTRUTH ){
+                /* If the term has previously been used with an assumption of
+                ** higher selectivity, then set the flag to rerun the
+                ** loop computations. */
+                pBuilder->bldFlags2 |= SQLITE_BLDF2_2NDPASS;
+              }
+            }
            if( pNew->nOut>saved_nOut ) pNew->nOut = saved_nOut;
            pNew->nOut -= nIn;
          }
@@ -2732,6 +2758,7 @@ static int whereLoopAddBtreeIndex(
   && saved_nEq+1<pProbe->nKeyCol
   && saved_nEq==pNew->nLTerm
   && pProbe->noSkipScan==0
+   && pProbe->hasStat1!=0
   && OptimizationEnabled(db, SQLITE_SkipScan)
   && pProbe->aiRowLogEst[saved_nEq+1]>=42  /* TUNING: Minimum for skip-scan */
   && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK
@@ -3079,9 +3106,9 @@ static int whereLoopAddBtree(
      }
    }

-    pBuilder->bldFlags = 0;
+    pBuilder->bldFlags1 = 0;
    rc = whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, 0);
-    if( pBuilder->bldFlags==SQLITE_BLDF_INDEXED ){
+    if( pBuilder->bldFlags1==SQLITE_BLDF1_INDEXED ){
      /* If a non-unique index is used, or if a prefix of the key for
      ** unique index is used (making the index functionally non-unique)
      ** then the sqlite_stat1 data becomes important for scoring the
@@ -3752,8 +3779,11 @@ static i8 wherePathSatisfiesOrderBy(
        if( j>=pLoop->nLTerm ) continue;
      }
      if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 && pOBExpr->iColumn>=0 ){
-        if( sqlite3ExprCollSeqMatch(pWInfo->pParse, 
-                  pOrderBy->a[i].pExpr, pTerm->pExpr)==0 ){
+        Parse *pParse = pWInfo->pParse;
+        CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pOrderBy->a[i].pExpr);
+        CollSeq *pColl2 = sqlite3ExprCompareCollSeq(pParse, pTerm->pExpr);
+        assert( pColl1 );
+        if( pColl2==0 || sqlite3StrICmp(pColl1->zName, pColl2->zName) ){
          continue;
        }
        testcase( pTerm->pExpr->op==TK_IS );
@@ -4533,6 +4563,28 @@ static int exprIsDeterministic(Expr *p){
  return w.eCode;
 }

+  
+#ifdef WHERETRACE_ENABLED
+/*
+** Display all WhereLoops in pWInfo
+*/
+static void showAllWhereLoops(WhereInfo *pWInfo, WhereClause *pWC){
+  if( sqlite3WhereTrace ){    /* Display all of the WhereLoop objects */
+    WhereLoop *p;
+    int i;
+    static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz"
+                                           "ABCDEFGHIJKLMNOPQRSTUVWYXZ";
+    for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){
+      p->cId = zLabel[i%(sizeof(zLabel)-1)];
+      sqlite3WhereLoopPrint(p, pWC);
+    }
+  }
+}
+# define WHERETRACE_ALL_LOOPS(W,C) showAllWhereLoops(W,C)
+#else
+# define WHERETRACE_ALL_LOOPS(W,C)
+#endif
+
 /*
 ** Generate the beginning of the loop used for WHERE clause processing.
 ** The return value is a pointer to an opaque structure that contains
@@ -4834,19 +4886,28 @@ WhereInfo *sqlite3WhereBegin(
  if( nTabList!=1 || whereShortCut(&sWLB)==0 ){
    rc = whereLoopAddAll(&sWLB);
    if( rc ) goto whereBeginError;
-  
-#ifdef WHERETRACE_ENABLED
-    if( sqlite3WhereTrace ){    /* Display all of the WhereLoop objects */
-      WhereLoop *p;
-      int i;
-      static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz"
-                                             "ABCDEFGHIJKLMNOPQRSTUVWYXZ";
-      for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){
-        p->cId = zLabel[i%(sizeof(zLabel)-1)];
-        sqlite3WhereLoopPrint(p, sWLB.pWC);
+
+#ifdef SQLITE_ENABLE_STAT4
+    /* If one or more WhereTerm.truthProb values were used in estimating
+    ** loop parameters, but then those truthProb values were subsequently
+    ** changed based on STAT4 information while computing subsequent loops,
+    ** then we need to rerun the whole loop building process so that all
+    ** loops will be built using the revised truthProb values. */
+    if( sWLB.bldFlags2 & SQLITE_BLDF2_2NDPASS ){
+      WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC);
+      WHERETRACE(0xffff, 
+           ("**** Redo all loop computations due to"
+            " TERM_HIGHTRUTH changes ****\n"));
+      while( pWInfo->pLoops ){
+        WhereLoop *p = pWInfo->pLoops;
+        pWInfo->pLoops = p->pNextLoop;
+        whereLoopDelete(db, p);
      }
+      rc = whereLoopAddAll(&sWLB);
+      if( rc ) goto whereBeginError;
    }
 #endif
+    WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC);
  
    wherePathSolver(pWInfo, 0);
    if( db->mallocFailed ) goto whereBeginError;
@@ -291,6 +291,12 @@ struct WhereTerm {
 #define TERM_LIKE       0x0400 /* The original LIKE operator */
 #define TERM_IS         0x0800 /* Term.pExpr is an IS operator */
 #define TERM_VARSELECT  0x1000 /* Term.pExpr contains a correlated sub-query */
+#define TERM_HEURTRUTH  0x2000 /* Heuristic truthProb used */
+#ifdef SQLITE_ENABLE_STAT4
+#  define TERM_HIGHTRUTH  0x4000 /* Term excludes few rows */
+#else
+#  define TERM_HIGHTRUTH  0      /* Only used with STAT4 */
+#endif

 /*
 ** An instance of the WhereScan object is used as an iterator for locating
@@ -405,13 +411,16 @@ struct WhereLoopBuilder {
  UnpackedRecord *pRec;     /* Probe for stat4 (if required) */
  int nRecValid;            /* Number of valid fields currently in pRec */
 #endif
-  unsigned int bldFlags;    /* SQLITE_BLDF_* flags */
+  unsigned char bldFlags1;  /* First set of SQLITE_BLDF_* flags */
+  unsigned char bldFlags2;  /* Second set of SQLITE_BLDF_* flags */
  unsigned int iPlanLimit;  /* Search limiter */
 };

 /* Allowed values for WhereLoopBuider.bldFlags */
-#define SQLITE_BLDF_INDEXED  0x0001   /* An index is used */
-#define SQLITE_BLDF_UNIQUE   0x0002   /* All keys of a UNIQUE index used */
+#define SQLITE_BLDF1_INDEXED  0x0001   /* An index is used */
+#define SQLITE_BLDF1_UNIQUE   0x0002   /* All keys of a UNIQUE index used */
+
+#define SQLITE_BLDF2_2NDPASS  0x0004   /* Second builder pass needed */

 /* The WhereLoopBuilder.iPlanLimit is used to limit the number of
 ** index+constraint combinations the query planner will consider for a
@@ -1432,7 +1432,9 @@ Bitmask sqlite3WhereCodeOneLoopStart(
          pCompare->pRight = pRight = sqlite3Expr(db, TK_REGISTER, 0);
          if( pRight ){
            pRight->iTable = iReg+j+2;
-            sqlite3ExprIfFalse(pParse, pCompare, pLevel->addrCont, 0);
+            sqlite3ExprIfFalse(
+                pParse, pCompare, pLevel->addrCont, SQLITE_JUMPIFNULL
+            );
          }
          pCompare->pLeft = 0;
          sqlite3ExprDelete(db, pCompare);
@@ -1709,6 +1711,9 @@ Bitmask sqlite3WhereCodeOneLoopStart(
      nExtraReg = 1;
      bSeekPastNull = 1;
      pLevel->regBignull = regBignull = ++pParse->nMem;
+      if( pLevel->iLeftJoin ){
+        sqlite3VdbeAddOp2(v, OP_Integer, 0, regBignull);
+      }
      pLevel->addrBignull = sqlite3VdbeMakeLabel(pParse);
    }

@@ -377,7 +377,8 @@ static int isAuxiliaryVtabOperator(
    **       MATCH(expression,vtab_column)
    */
    pCol = pList->a[1].pExpr;
-    if( pCol->op==TK_COLUMN && IsVirtual(pCol->y.pTab) ){
+    testcase( pCol->op==TK_COLUMN && pCol->y.pTab==0 );
+    if( ExprIsVtab(pCol) ){
      for(i=0; i<ArraySize(aOp); i++){
        if( sqlite3StrICmp(pExpr->u.zToken, aOp[i].zOp)==0 ){
          *peOp2 = aOp[i].eOp2;
@@ -399,7 +400,8 @@ static int isAuxiliaryVtabOperator(
    ** with function names in an arbitrary case.
    */
    pCol = pList->a[0].pExpr;
-    if( pCol->op==TK_COLUMN && IsVirtual(pCol->y.pTab) ){
+    testcase( pCol->op==TK_COLUMN && pCol->y.pTab==0 );
+    if( ExprIsVtab(pCol) ){
      sqlite3_vtab *pVtab;
      sqlite3_module *pMod;
      void (*xNotUsed)(sqlite3_context*,int,sqlite3_value**);
@@ -422,10 +424,12 @@ static int isAuxiliaryVtabOperator(
    int res = 0;
    Expr *pLeft = pExpr->pLeft;
    Expr *pRight = pExpr->pRight;
-    if( pLeft->op==TK_COLUMN && IsVirtual(pLeft->y.pTab) ){
+    testcase( pLeft->op==TK_COLUMN && pLeft->y.pTab==0 );
+    if( ExprIsVtab(pLeft) ){
      res++;
    }
-    if( pRight && pRight->op==TK_COLUMN && IsVirtual(pRight->y.pTab) ){
+    testcase( pRight && pRight->op==TK_COLUMN && pRight->y.pTab==0 );
+    if( pRight && ExprIsVtab(pRight) ){
      res++;
      SWAP(Expr*, pLeft, pRight);
    }
@@ -1910,6 +1910,7 @@ static int windowInitAccum(Parse *pParse, Window *pMWin){
  Window *pWin;
  for(pWin=pMWin; pWin; pWin=pWin->pNextWin){
    FuncDef *pFunc = pWin->pFunc;
+    assert( pWin->regAccum );
    sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum);
    nArg = MAX(nArg, windowArgCount(pWin));
    if( pMWin->regStartRowid==0 ){
@@ -2288,6 +2289,10 @@ Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p){
      pNew->eStart = p->eStart;
      pNew->eExclude = p->eExclude;
      pNew->regResult = p->regResult;
+      pNew->regAccum = p->regAccum;
+      pNew->iArgCol = p->iArgCol;
+      pNew->iEphCsr = p->iEphCsr;
+      pNew->bExprArgs = p->bExprArgs;
      pNew->pStart = sqlite3ExprDup(db, p->pStart, 0);
      pNew->pEnd = sqlite3ExprDup(db, p->pEnd, 0);
      pNew->pOwner = pOwner;
@@ -613,4 +613,21 @@ do_execsql_test 18.2.2 {
  SELECT sql FROM sqlite_master;
 } {{CREATE TABLE t0 (c1 INTEGER, PRIMARY KEY(c1))}}

+# 2020-02-23 ticket f50af3e8a565776b
+reset_db
+do_execsql_test 19.100 {
+  CREATE TABLE t1(x);
+  CREATE VIEW t2 AS SELECT 1 FROM t1, (t1 AS a0, t1);
+  ALTER TABLE t1 RENAME TO t3;
+  SELECT sql FROM sqlite_master;
+} {{CREATE TABLE "t3"(x)} {CREATE VIEW t2 AS SELECT 1 FROM "t3", ("t3" AS a0, "t3")}}
+do_execsql_test 19.110 {
+  INSERT INTO t3(x) VALUES(123);
+  SELECT * FROM t2;
+} {1}
+do_execsql_test 19.120 {
+  INSERT INTO t3(x) VALUES('xyz');
+  SELECT * FROM t2;
+} {1 1 1 1 1 1 1 1}
+
 finish_test
@@ -0,0 +1,88 @@
+# 2020-02-23
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# Tests for functionality related to ANALYZE.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !stat4 {
+  finish_test
+  return
+}
+set testprefix analyzeG
+
+proc do_scan_order_test {tn sql expect} {
+  uplevel [list do_test $tn [subst -nocommands {
+    set res ""
+    db eval "explain query plan $sql" {
+      lappend res [set detail]
+    }
+    set res
+  }] [list {*}$expect]]
+}
+
+#-------------------------------------------------------------------------
+# Test cases 1.* seek to verify that even if an index is not used, its
+# stat4 data may be used by the planner to estimate the number of
+# rows that match an unindexed constraint on the same column.
+#
+do_execsql_test 1.0 {
+  PRAGMA automatic_index = 0;
+  CREATE TABLE t1(a, x);
+  CREATE TABLE t2(b, y);
+  WITH s(i) AS (
+    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<100
+  )
+  INSERT INTO t1 SELECT (i%50), NULL FROM s;
+  WITH s(i) AS (
+    SELECT 1 UNION ALL SELECT i+1 FROM s WHERE i<100
+  )
+  INSERT INTO t2 SELECT (CASE WHEN i<95 THEN 44 ELSE i END), NULL FROM s;
+}
+
+# Join tables t1 and t2. Both contain 100 rows. (a=44) matches 2 rows
+# in "t1", (b=44) matches 95 rows in table "t2". But the planner doesn't
+# know this, so it has no preference as to which order the tables are
+# scanned in. In practice this means that tables are scanned in the order
+# they are specified in in the FROM clause.
+do_scan_order_test 1.1.1 {
+  SELECT * FROM t1, t2 WHERE a=44 AND b=44;
+} {
+  {SCAN TABLE t1} {SCAN TABLE t2}
+}
+do_scan_order_test 1.1.2 {
+  SELECT * FROM t2, t1 WHERE a=44 AND b=44 
+} {
+  {SCAN TABLE t2} {SCAN TABLE t1} 
+}
+
+do_execsql_test 1.2 {
+  CREATE INDEX t2b ON t2(b);
+  ANALYZE;
+}
+
+# Now, with the ANALYZE data, the planner knows that (b=44) matches a 
+# large number of rows. So it elects to scan table "t1" first, regardless
+# of the order in which the tables are specified in the FROM clause.
+do_scan_order_test 1.3.1 {
+  SELECT * FROM t1, t2 WHERE a=44 AND b=44;
+} {
+  {SCAN TABLE t1} {SCAN TABLE t2}
+}
+do_scan_order_test 1.3.2 {
+  SELECT * FROM t2, t1 WHERE a=44 AND b=44 
+} {
+  {SCAN TABLE t1} {SCAN TABLE t2} 
+}
+
+
+finish_test
@@ -0,0 +1,79 @@
+# 2020-01-29
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# 
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix bestindex7
+
+ifcapable !vtab {
+  finish_test
+  return
+}
+
+register_tcl_module db
+
+proc vtab_command {src method args} {
+  switch -- $method {
+    xConnect {
+      return "CREATE TABLE xxx(a)"
+    }
+
+    xBestIndex {
+      set clist [lindex $args 0]
+      set iCons 0
+      set ret [list]
+      foreach cons $clist {
+        catch { array unset C }
+        array set C $cons
+        if {$C(usable)} {
+          lappend ret use $iCons
+        }
+        incr iCons
+      }
+      return $ret
+    }
+
+    xFilter {
+      return [list sql "SELECT rowid, x FROM $src"]
+    }
+
+  }
+
+  return {}
+}
+
+do_execsql_test 1.0 {
+  CREATE TABLE t1(x);
+  INSERT INTO t1 VALUES(0), (2);
+  CREATE VIRTUAL TABLE vt1 USING tcl(vtab_command t1);
+}
+
+do_execsql_test 1.1 { select * from vt1 } {0 2}
+do_execsql_test 1.2 { select * from vt1 WHERE a=0 } {0}
+do_execsql_test 1.3 { select * from vt1 WHERE a=1 } {}
+do_execsql_test 1.4 { select * from vt1 WHERE a=1 OR a=0} {0}
+
+do_execsql_test 1.5 {
+  UPDATE t1 SET x=NULL WHERE x=2;
+}
+
+do_execsql_test 1.6 { select * from vt1 } {0 {}}
+do_execsql_test 1.7 { select * from vt1 WHERE a=0 } {0}
+do_execsql_test 1.8 { select * from vt1 WHERE a=1 } {}
+do_execsql_test 1.9 { select * from vt1 WHERE a=1 OR a=0} {0}
+do_execsql_test 1.10 { select * from vt1 WHERE a IN (2) } {}
+do_execsql_test 1.10 { select * from vt1 WHERE a IN (0,1,2,3) } {0}
+do_execsql_test 1.11 { select * from vt1 WHERE a IN (0, NULL) } {0}
+do_execsql_test 1.12 { select * from vt1 WHERE a IN (NULL) } {}
+
+finish_test
+
@@ -166,7 +166,7 @@ do_test check-2.6 {
  catchsql {
    INSERT INTO t2 VALUES(NULL, NULL, 3.14159);
  }
-} {1 {CHECK constraint failed: three}}
+} {0 {}}

 # Undocumented behavior:  The CONSTRAINT name clause can follow a constraint.
 # Such a clause is ignored.  But the parser must accept it for backwards
@@ -1138,5 +1138,49 @@ do_catchsql_test 13.1 {
    INSERT INTO t1(b,c) SELECT last_insert_rowid(), x FROM c;
 } {1 {database disk image is malformed}}

+#-------------------------------------------------------------------------
+reset_db
+do_test 14.0 {
+  sqlite3 db {}
+  db deserialize [decode_hexdb {
+| size 512 pagesize 65536 filename clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-4806406219825152
+| page 1 offset 0
+|      0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00   SQLite format 3.
+|     16: 00 01 02 01 00 40 20 20 00 63 2e 78 00 00 00 07   .....@  .c.x....
+|     32: 00 00 00 00 00 00 00 00 00 00 00 08 00 00 00 04   ................
+|     48: 00 00 00 00 00 00 01 00 35 05 43 00 04 00 00 00   ........5.C.....
+|     80: 00 00 00 00 00 00 00 00 08 00 00 00 00 00 00 0c   ................
+|     96: 00 2e 2c 50 0d 00 00 00 03 00 00 00 01 da 01 b0   ..,P............
+|    112: 01 56 01 86 01 2a 01 02 00 00 00 00 00 00 00 1c   .V...*..........
+|    128: 00 38 80 b2 e6 0e 00 00 00 00 00 00 00 00 00 10   .8..............
+|    144: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01   ................
+|    160: 00 00 00 00 00 00 00 00 00 00 00 00 45 20 54 41   ............E TA
+|    256: 00 00 00 00 00 00 22 07 06 17 11 11 01 35 74 61   .............5ta
+|    272: 62 6c 00 10 00 00 34 07 43 52 54 45 20 54 41 42   bl....4.CRTE TAB
+|    288: 4c 45 20 74 33 28 63 2e 78 2c 65 2c 66 15 28 3a   LE t3(c.x,e,f.(:
+|    304: 06 17 11 11 01 65 78 8c cc 87 85 35 05 43 72 45   .....ex....5.CrE
+|    320: 41 54 48 20 49 4e 44 45 58 20 74 33 78 20 4f 4e   ATH INDEX t3x ON
+|    336: 20 74 33 28 78 39 2e 04 06 17 15 11 01 45 69 6e    t3(x9.......Ein
+|    352: 64 65 78 74 32 63 64 74 32 05 43 52 45 41 54 45   dext2cdt2.CREATE
+|    368: 20 49 4e 44 45 58 20 74 32 63 64 20 4f 4e 20 74    INDEX t2cd ON t
+|    384: 32 28 63 2a 44 29 28 05 fa e8 ee ed 01 3d 74 63   2(c*D)(......=tc
+|    400: 62 6c 65 74 33 74 33 07 43 52 45 41 54 45 20 54   blet3t3.CREATE T
+|    416: 41 42 4c 45 20 74 33 28 63 2e 78 2c 65 2c 66 15   ABLE t3(c.x,e,f.
+|    432: 28 3a 06 17 11 11 01 3d 74 61 62 6c 65 74 32 74   (:.....=tablet2t
+|    448: 32 03 43 52 45 41 54 45 20 54 41 42 4c 45 20 74   2.CREATE TABLE t
+|    464: 32 28 63 2c 64 2c 65 2c 66 29 24 01 06 17 11 11   2(c,d,e,f)$.....
+|    480: 01 35 74 61 62 6c 65 74 31 74 31 02 43 52 45 41   .5tablet1t1.CREA
+|    496: 54 45 20 54 41 42 4c 45 20 74 31 28 61 2c 63 29   TE TABLE t1(a,c)
+| end clusterfuzz-testcase-minimized-sqlite3_dbfuzz2_fuzzer-4806406219825152
+}]} {}
+
+do_catchsql_test 14.1 {
+  PRAGMA integrity_check;
+} {1 {database disk image is malformed}}
+
+do_catchsql_test 14.2 {
+  ALTER TABLE t1 RENAME TO alkjalkjdfiiiwuer987lkjwer82mx97sf98788s9789s; 
+} {1 {database disk image is malformed}}

 finish_test
+
@@ -128,4 +128,13 @@ do_catchsql_test default-4.4 {
  CREATE TABLE t2(a TEXT, b TEXT DEFAULT(98+coalesce(5,:xyz)));
 } {1 {default value of column [b] is not constant}}

+# 2020-03-09 out-of-bounds memory access discovered by "Eternal Sakura"
+# and reported to chromium.
+#
+reset_db
+do_catchsql_test default-5.1 {
+  CREATE TABLE t1 (a,b DEFAULT(random() NOTNULL IN (RAISE(IGNORE),2,3)));
+  INSERT INTO t1(a) VALUES(1);
+} {1 {RAISE() may only be used within a trigger-program}}
+
 finish_test
@@ -169,4 +169,84 @@ do_test enc-11.2 {
  }
 } {2}

+#-------------------------------------------------------------------------
+reset_db
+forcedelete test.db2
+forcedelete test.db3
+
+do_execsql_test enc-12.0 {
+  PRAGMA encoding = 'utf-8';
+  CREATE TABLE t1(a, b, c);
+  INSERT INTO t1 VALUES('a', 'b', 'c');
+  ATTACH 'test.db3' AS aux;
+  CREATE TABLE aux.t3(x, y, z);
+  INSERT INTO t3 VALUES('xxx', 'yyy', 'zzz');
+  PRAGMA encoding;
+} {UTF-8}
+
+do_test enc-12.1 {
+  sqlite3 db2 test.db2
+  db2 eval {
+    PRAGMA encoding = 'UTF-16le';
+    CREATE TABLE t2(d, e, f);
+    INSERT INTO t2 VALUES('d', 'e', 'f');
+    PRAGMA encoding;
+  }
+} {UTF-16le}
+
+do_test enc-12.2 {
+  db2 backup test.db
+  db2 close
+} {}
+
+do_catchsql_test enc-12.3 {
+  SELECT * FROM t2;
+} {1 {attached databases must use the same text encoding as main database}}
+
+db close
+sqlite3 db test.db3
+do_execsql_test enc-12.4 {
+  SELECT * FROM t3;
+  PRAGMA encoding = 'UTF-16le';
+  SELECT * FROM t3;
+} {xxx yyy zzz xxx yyy zzz}
+
+db close
+sqlite3 db test.db3
+breakpoint
+do_execsql_test enc-12.5 {
+  PRAGMA encoding = 'UTF-16le';
+  PRAGMA encoding;
+} {UTF-8}
+
+reset_db
+do_execsql_test enc-12.6 {
+  PRAGMA encoding = 'UTF-8';
+  CREATE TEMP TABLE t1(a, b, c);
+  INSERT INTO t1 VALUES('xxx', 'yyy', 'zzz');
+}
+do_test enc-12.7 {
+  sqlite3 db2 test.db2
+  db2 backup test.db
+  db2 close
+  db eval {
+    SELECT * FROM t1;
+  }
+} {xxx yyy zzz}
+do_catchsql_test enc-12.8 {
+  SELECT * FROM t2;
+  SELECT * FROM t1;
+} {1 {attached databases must use the same text encoding as main database}}
+
+db close
+sqlite3 db test.db
+do_execsql_test enc-12.9 {
+  CREATE TEMP TABLE t1(a, b, c);
+  INSERT INTO t1 VALUES('xxx', 'yyy', 'zzz');
+}
+do_execsql_test enc-12.10 {
+  SELECT * FROM t2;
+  SELECT * FROM t1;
+} {d e f xxx yyy zzz}
+
 finish_test
@@ -181,4 +181,16 @@ do_catchsql_test 6.10 {
  INSERT INTO f(f) VALUES ("merge=1");
 } {1 {database disk image is malformed}}

+# 2020-03-02 https://bugs.chromium.org/p/chromium/issues/detail?id=1057441
+# The ticket complains of use of an uninitialized value. That part is harmless.
+# The only reason to fix this is the failure to detect a subtly corrupt
+# inverted index.
+#
+reset_db
+do_catchsql_test 7.10 {
+  CREATE VIRTUAL TABLE f USING fts3(a,b);
+  INSERT INTO f_segdir VALUES (0,0,1,0,'0 0',x'01010101020101');
+  SELECT  matchinfo( f , 'pcx')  FROM f WHERE b MATCH x'c533';
+} {1 {database disk image is malformed}}
+
 finish_test
@@ -5821,4 +5821,17 @@ do_catchsql_test 36.0 {
  INSERT INTO f(f) VALUES ('merge=53,216');
 } {0 {}}

+#-------------------------------------------------------------------------
+#
+reset_db
+do_execsql_test 36.0 {
+  CREATE VIRTUAL TABLE f USING fts3(a,b);
+  CREATE TABLE 'f_stat'(id INTEGER PRIMARY KEY, value BLOB);
+  INSERT INTO f_stat VALUES (1,x'11014101000101c5c5014b010164c5014b010101c50101c5c5010201010101014101000101c5c5014b010101c5014b010101c50101c5c501010100c50101c5c5010101010101e40201010101014101000201010101014101000101010201010101014101000101c5c503b5fefefe3afeffffc5c5c5c50101010101010201010101014101adadadadadadadadadadadad91adadadadadadadad0101c50101c5c501f9ffffffffffffffff0001010102010101010140f5000101c5c5014b010101c50101c5c501010101e6010201010101014101000101c5c5014b010101c50101c5c5010101114b0101c5c50101010a0101020101e60101');
+}
+
+do_catchsql_test 36.1 {
+  INSERT INTO f(f) VALUES ('merge=59,59');
+} {1 {database disk image is malformed}}
+
 finish_test
@@ -229,13 +229,18 @@ do_catchsql_test fts4aa-5.70 {
 # 2019-11-18 https://bugs.chromium.org/p/chromium/issues/detail?id=1025467
 db close
 sqlite3 db :memory:
+if {$tcl_platform(byteOrder)=="littleEndian"} {
+  set res {X'0200000000000000000000000E0000000E00000001000000010000000100000001000000'}
+} else {
+  set res {X'0000000200000000000000000000000E0000000E00000001000000010000000100000001'}
+}
 do_execsql_test fts4aa-6.10 {
  CREATE VIRTUAL TABLE f USING fts4();
  INSERT INTO f_segdir VALUES (77,91,0,0,'255 77',x'0001308000004d5c4ddddddd4d4d7b4d4d4d614d8019ff4d05000001204d4d2e4d6e4d4d4d4b4d6c4d004d4d4d4d4d4d3d000000004d5d4d4d645d4d004d4d4d4d4d4d4d4d4d454d6910004d05ffff054d646c4d004d5d4d4d4d4d3d000000004d4d4d4d4d4d4d4d4d4d4d69624d4d4d04004d4d4d4d4d604d4ce1404d554d45');
  INSERT INTO f_segdir VALUES (77,108,0,0,'255 77',x'0001310000fa64004d4d4d3c5d4d654d4d4d614d8000ff4d05000001204d4d2e4d6e4d4d4dff4d4d4d4d4d4d00104d4d4d4d000000004d4d4d0400311d4d4d4d4d4d4d4d4d4d684d6910004d05ffff054d4d6c4d004d4d4d4d4d4d3d000000004d4d4d4d644d4d4d4d4d4d69624d4d4d03ed4d4d4d4d4d604d4ce1404d550080');
  INSERT INTO f_stat VALUES (0,x'80808080100000000064004d4d4d3c4d4d654d4d4d614d8000ff4df6ff1a00204d4d2e4d6e4d4d4d104d4d4d4d4d4d00104d4d4d4d4d4d69574d4d4d000031044d4d4d3e4d4d4c4d05004d6910');
  SELECT quote(matchinfo(f,'pnax')) from f where f match '0 1';
-} {X'0200000000000000000000000E0000000E00000001000000010000000100000001000000'}
+} $res

 # 2019-11-18 Detect infinite loop in fts3SelectLeaf()
 db close
@@ -0,0 +1,53 @@
+# 2020 February 27
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#*************************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+source $testdir/fts3_common.tcl
+set ::testprefix fts4min
+
+# If SQLITE_ENABLE_FTS3 is defined, omit this file.
+ifcapable !fts3 {
+  finish_test
+  return
+}
+
+#------------------------------------------------------------------
+do_execsql_test 0.0 {
+  CREATE TABLE t1(a NOT NULL, b);
+  CREATE INDEX i1 ON t1(a);
+}
+
+do_execsql_test 1.0 {
+  CREATE VIRTUAL TABLE ft USING fts3(c);
+  INSERT INTO ft(docid, c) VALUES(22, 'hello world');
+  INSERT INTO ft(docid, c) VALUES(44, 'hello world');
+  INSERT INTO ft(docid, c) VALUES(11, 'hello world');
+}
+
+do_eqp_test 1.1.1 {
+  SELECT max(rowid) FROM ft
+} {VIRTUAL TABLE INDEX 0:DESC}
+
+do_eqp_test 1.1.2 {
+  SELECT min(rowid) FROM ft
+} {VIRTUAL TABLE INDEX 0:ASC}
+
+do_execsql_test 1.2.1 {
+  SELECT max(rowid) FROM ft
+} {44}
+
+do_execsql_test 1.2.2 {
+  SELECT min(rowid) FROM ft
+} {11}
+
+finish_test
@@ -1477,4 +1477,24 @@ do_execsql_test func-34.10 {
  SELECT * FROM t1;
 } {1 2}

+# 2020-03-11 COALESCE() should short-circuit
+# See also ticket 3c9eadd2a6ba0aa5
+# Both issues stem from the fact that functions that could
+# throw exceptions were being factored out into initialization
+# code.  The fix was to put those function calls inside of
+# OP_Once instead.
+#
+reset_db
+do_execsql_test func-35.100 {
+  CREATE TABLE t1(x);
+  SELECT coalesce(x, abs(-9223372036854775808)) FROM t1;
+} {}
+do_execsql_test func-35.110 {
+  SELECT coalesce(x, 'xyz' LIKE printf('%.1000000c','y')) FROM t1;
+} {}
+do_execsql_test func-35.200 {
+  CREATE TABLE t0(c0 CHECK(ABS(-9223372036854775808)));
+  PRAGMA integrity_check;
+} {ok}
+
 finish_test
@@ -451,7 +451,7 @@ ifcapable check {
    catchsql {
      INSERT INTO t1 (x) VALUES ('1234.00');
    }
-  } {1 {CHECK constraint failed: t1}}
+  } {0 {}}
  do_test func4-3.17 {
    catchsql {
      INSERT INTO t1 (x) VALUES (1234.00);
@@ -461,7 +461,7 @@ ifcapable check {
    catchsql {
      INSERT INTO t1 (x) VALUES ('-9223372036854775809');
    }
-  } {1 {CHECK constraint failed: t1}}
+  } {0 {}}
  if {$highPrecision(1)} {
    do_test func4-3.19 {
      catchsql {
@@ -470,8 +470,8 @@ ifcapable check {
    } {1 {CHECK constraint failed: t1}}
  }
  do_execsql_test func4-3.20 {
-    SELECT x FROM t1 ORDER BY x;
-  } {1234 1234 1234}
+    SELECT x FROM t1 WHERE x>0 ORDER BY x;
+  } {1234 1234 1234 1234}

  ifcapable floatingpoint {
    do_execsql_test func4-4.1 {
@@ -53,9 +53,10 @@ do_execsql_test func5-2.2 {
   WHERE x+counter1('hello')=counter1('hello')+x
   ORDER BY +x;
 } {}
+set cvalue [db one {SELECT counter2('hello')+1}]
 do_execsql_test func5-2.3 {
  SELECT x, y FROM t2
-   WHERE x+counter2('hello')=counter2('hello')+x
+   WHERE x+counter2('hello')=$cvalue+x
   ORDER BY +x;
 } {1 2 3 4 5 6 7 8}

@@ -11,8 +11,7 @@
 *************************************************************************
 **
 ** This is a utility program designed to aid running regressions tests on
-** the SQLite library using data from an external fuzzer, such as American
-** Fuzzy Lop (AFL) (http://lcamtuf.coredump.cx/afl/).
+** the SQLite library using data from external fuzzers.
 **
 ** This program reads content from an SQLite database file with the following
 ** schema:
@@ -63,6 +62,21 @@
 ** If fuzzcheck does crash, it can be run in the debugger and the content
 ** of the global variable g.zTextName[] will identify the specific XSQL and
 ** DB values that were running when the crash occurred.
+**
+** DBSQLFUZZ:
+**
+** The dbsqlfuzz fuzzer includes both a database file and SQL to run against
+** that database in its input.  This utility can now process dbsqlfuzz
+** input files.  Load such files using the "--load-dbsql FILE ..." command-line
+** option.
+**
+** Dbsqlfuzz inputs are ordinary text.  The first part of the file is text
+** that describes the content of the database (using a lot of hexadecimal),
+** then there is a divider line followed by the SQL to run against the
+** database.  Because they are ordinary text, dbsqlfuzz inputs are stored
+** in the XSQL table, as if they were ordinary SQL inputs.  The isDbSql()
+** function can look at a text string and determine whether or not it is
+** a valid dbsqlfuzz input.
 */
 #include <stdio.h>
 #include <stdlib.h>
@@ -322,6 +336,39 @@ static void readfileFunc(
  fclose(in);
 }

+/*
+** Implementation of the "readtextfile(X)" SQL function.  The text content
+** of the file named X through the end of the file or to the first \000
+** character, whichever comes first, is read and returned as TEXT.  NULL
+** is returned if the file does not exist or is unreadable.
+*/
+static void readtextfileFunc(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  const char *zName;
+  FILE *in;
+  long nIn;
+  char *pBuf;
+
+  zName = (const char*)sqlite3_value_text(argv[0]);
+  if( zName==0 ) return;
+  in = fopen(zName, "rb");
+  if( in==0 ) return;
+  fseek(in, 0, SEEK_END);
+  nIn = ftell(in);
+  rewind(in);
+  pBuf = sqlite3_malloc64( nIn+1 );
+  if( pBuf && 1==fread(pBuf, nIn, 1, in) ){
+    pBuf[nIn] = 0;
+    sqlite3_result_text(context, pBuf, -1, sqlite3_free);
+  }else{
+    sqlite3_free(pBuf);
+  }
+  fclose(in);
+}
+
 /*
 ** Implementation of the "writefile(X,Y)" SQL function.  The argument Y
 ** is written into file X.  The number of bytes written is returned.  Or
@@ -466,13 +513,64 @@ static int lengthLimit = 1000000;
 static int depthLimit = 500;

 /* Limit on the amount of heap memory that can be used */
-static sqlite3_int64 heapLimit = 1000000000;
+static sqlite3_int64 heapLimit = 100000000;

 /* Maximum byte-code program length in SQLite */
 static int vdbeOpLimit = 25000;

 /* Maximum size of the in-memory database */
 static sqlite3_int64 maxDbSize = 104857600;
+/* OOM simulation parameters */
+static unsigned int oomCounter = 0;    /* Simulate OOM when equals 1 */
+static unsigned int oomRepeat = 0;     /* Number of OOMs in a row */
+static void*(*defaultMalloc)(int) = 0; /* The low-level malloc routine */
+
+/* This routine is called when a simulated OOM occurs.  It is broken
+** out as a separate routine to make it easy to set a breakpoint on
+** the OOM
+*/
+void oomFault(void){
+  if( eVerbosity ){
+    printf("Simulated OOM fault\n");
+  }
+  if( oomRepeat>0 ){
+    oomRepeat--;
+  }else{
+    oomCounter--;
+  }
+}
+
+/* This routine is a replacement malloc() that is used to simulate
+** Out-Of-Memory (OOM) errors for testing purposes.
+*/
+static void *oomMalloc(int nByte){
+  if( oomCounter ){
+    if( oomCounter==1 ){
+      oomFault();
+      return 0;
+    }else{
+      oomCounter--;
+    }
+  }
+  return defaultMalloc(nByte);
+}
+
+/* Register the OOM simulator.  This must occur before any memory
+** allocations */
+static void registerOomSimulator(void){
+  sqlite3_mem_methods mem;
+  sqlite3_shutdown();
+  sqlite3_config(SQLITE_CONFIG_GETMALLOC, &mem);
+  defaultMalloc = mem.xMalloc;
+  mem.xMalloc = oomMalloc;
+  sqlite3_config(SQLITE_CONFIG_MALLOC, &mem);
+}
+
+/* Turn off any pending OOM simulation */
+static void disableOom(void){
+  oomCounter = 0;
+  oomRepeat = 0;
+}

 /*
 ** Translate a single byte of Hex into an integer.
@@ -653,6 +751,9 @@ static int block_troublesome_sql(
    ){
      return SQLITE_DENY;
    }
+    if( sqlite3_stricmp("oom",zArg1)==0 && zArg2!=0 && zArg2[0]!=0 ){
+      oomCounter = atoi(zArg2);
+    }
  }else if( (eCode==SQLITE_ATTACH || eCode==SQLITE_DETACH)
            && zArg1 && zArg1[0] ){
    return SQLITE_DENY;
@@ -1374,6 +1475,7 @@ int main(int argc, char **argv){
  int openFlags4Data;          /* Flags for sqlite3_open_v2() */
  int nV;                      /* How much to increase verbosity with -vvvv */

+  registerOomSimulator();
  sqlite3_initialize();
  iBegin = timeOfDay();
 #ifdef __unix__
@@ -1425,7 +1527,8 @@ int main(int argc, char **argv){
        vdbeLimitFlag = 1;
      }else
      if( strcmp(z,"load-sql")==0 ){
-        zInsSql = "INSERT INTO xsql(sqltext)VALUES(CAST(readfile(?1) AS text))";
+        zInsSql = "INSERT INTO xsql(sqltext)"
+                  "VALUES(CAST(readtextfile(?1) AS text))";
        iFirstInsArg = i+1;
        openFlags4Data = SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE;
        break;
@@ -1437,7 +1540,8 @@ int main(int argc, char **argv){
        break;
      }else
      if( strcmp(z,"load-dbsql")==0 ){
-        zInsSql = "INSERT INTO xsql(sqltext)VALUES(CAST(readfile(?1) AS text))";
+        zInsSql = "INSERT INTO xsql(sqltext)"
+                  "VALUES(CAST(readtextfile(?1) AS text))";
        iFirstInsArg = i+1;
        openFlags4Data = SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE;
        dbSqlOnly = 1;
@@ -1623,6 +1727,8 @@ int main(int argc, char **argv){
    if( zInsSql ){
      sqlite3_create_function(db, "readfile", 1, SQLITE_UTF8, 0,
                              readfileFunc, 0, 0);
+      sqlite3_create_function(db, "readtextfile", 1, SQLITE_UTF8, 0,
+                              readtextfileFunc, 0, 0);
      sqlite3_create_function(db, "isdbsql", 1, SQLITE_UTF8, 0,
                              isDbSqlFunc, 0, 0);
      rc = sqlite3_prepare_v2(db, zInsSql, -1, &pStmt, 0);
@@ -1741,6 +1847,7 @@ int main(int argc, char **argv){

    /* Limit available memory, if requested */
    sqlite3_shutdown();
+
    if( nMemThisDb>0 && nMem==0 ){
      if( !nativeMalloc ){
        pHeap = realloc(pHeap, nMemThisDb);
@@ -1785,6 +1892,7 @@ int main(int argc, char **argv){
        runCombinedDbSqlInput(pSql->a, pSql->sz);
        nTest++;
        g.zTestName[0] = 0;
+        disableOom();
        continue;
      }
      for(pDb=g.pFirstDb; pDb; pDb=pDb->pNext){
@@ -765,19 +765,25 @@ do_execsql_test in-18.1 {
 #
 # Also ticket https://sqlite.org/src/info/29f635e0af71234b
 #
-do_execsql_test in-19.1 {
+do_execsql_test in-19.10 {
  DROP TABLE IF EXISTS t0;
  CREATE TABLE t0(c0 REAL UNIQUE);
-  INSERT INTO t0(c0) VALUES(2.07093491255203046E18);
-  SELECT 1 FROM t0 WHERE c0 IN ('2070934912552030444');
+  INSERT INTO t0(c0) VALUES(2.0625E00);
+  SELECT 1 FROM t0 WHERE c0 IN ('2.0625');
 } {1}
-do_execsql_test in-19.2 {
-  SELECT c0 IN ('2070934912552030444') FROM t0;
+do_execsql_test in-19.20 {
+  SELECT c0 IN ('2.0625') FROM t0;
 } {1}
-do_execsql_test in-19.3 {
-  SELECT c0 IN ('2070934912552030444',2,3) FROM t0;
+do_execsql_test in-19.21 {
+  SELECT c0 = ('2.0625') FROM t0;
 } {1}
-do_execsql_test in-19.4 {
+do_execsql_test in-19.22 {
+  SELECT c0 = ('0.20625e+01') FROM t0;
+} {1}
+do_execsql_test in-19.30 {
+  SELECT c0 IN ('2.0625',2,3) FROM t0;
+} {1}
+do_execsql_test in-19.40 {
  DROP TABLE t0;
  CREATE TABLE t0(c0 TEXT, c1 REAL, c2, PRIMARY KEY(c2, c0, c1));
  CREATE INDEX i0 ON t0(c1 IN (c0));
@@ -297,5 +297,47 @@ do_eqp_test 9.4 {
 } {SEARCH TABLE v0 USING COVERING INDEX v3 (ANY(c1) AND c2=?)}


+# 2020-03-01 ticket e12a0ae526bb51c7
+# NULLS LAST on a LEFT JOIN
+#
+reset_db
+do_execsql_test 10.10 {
+  CREATE TABLE t1(x);
+  INSERT INTO t1(x) VALUES('X');
+  CREATE TABLE t2(c, d);
+  CREATE INDEX t2dc ON t2(d, c);
+  SELECT c FROM t1 LEFT JOIN t2 ON d=NULL ORDER BY d, c NULLS LAST;
+} {{}}
+do_execsql_test 10.20 {
+  INSERT INTO t2(c,d) VALUES(5,'X'),(6,'Y'),(7,'Z'),(3,'A'),(4,'B');
+  SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d, c NULLS LAST;
+} {5}
+do_execsql_test 10.30 {
+  UPDATE t2 SET d='X';
+  UPDATE t2 SET c=NULL WHERE c=6;
+  SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d NULLS FIRST, c NULLS FIRST;
+} {{} 3 4 5 7}
+do_execsql_test 10.40 {
+  SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY d NULLS LAST, c NULLS LAST;
+} {3 4 5 7 {}}
+do_execsql_test 10.41 {
+  SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY c NULLS LAST;
+} {3 4 5 7 {}}
+do_execsql_test 10.42 {
+  SELECT c FROM t1 LEFT JOIN t2 ON d=x ORDER BY +d NULLS LAST, +c NULLS LAST;
+} {3 4 5 7 {}}
+do_execsql_test 10.50 {
+  INSERT INTO t1(x) VALUES(NULL),('Y');
+  SELECT x, c, d, '|' FROM t1 LEFT JOIN t2 ON d=x
+   ORDER BY d NULLS LAST, c NULLS LAST;
+} {X 3 X | X 4 X | X 5 X | X 7 X | X {} X | {} {} {} | Y {} {} |}
+do_execsql_test 10.51 {
+  SELECT x, c, d, '|' FROM t1 LEFT JOIN t2 ON d=x
+   ORDER BY +d NULLS LAST, +c NULLS LAST;
+} {X 3 X | X 4 X | X 5 X | X 7 X | X {} X | {} {} {} | Y {} {} |}
+
+
+
+

 finish_test
@@ -126,5 +126,62 @@ do_execsql_test 3.1 {
  SELECT a FROM t3 WHERE b=2 AND c=3 ORDER BY d DESC, e DESC, b, c, a DESC;
 } {~/B-TREE/}

+#-------------------------------------------------------------------------
+do_execsql_test 4.1.0 {
+  CREATE TABLE t4(b COLLATE nocase);
+  INSERT INTO t4 VALUES('abc');
+  INSERT INTO t4 VALUES('ABC');
+  INSERT INTO t4 VALUES('aBC');
+}
+do_execsql_test 4.1.1 {
+  SELECT * FROM t4 ORDER BY b COLLATE binary
+} {ABC aBC abc}
+do_execsql_test 4.1.2 {
+  SELECT * FROM t4 WHERE b='abc' ORDER BY b COLLATE binary
+} {ABC aBC abc}
+
+do_execsql_test 4.2.1 {
+  CREATE TABLE Records(typeID INTEGER, key TEXT COLLATE nocase, value TEXT);
+  CREATE INDEX RecordsIndex ON Records(typeID, key, value);
+}
+do_execsql_test 4.2.2 {
+  explain query plan
+  SELECT typeID, key, value FROM Records 
+  WHERE typeID = 2 AND key = 'x' 
+  ORDER BY key, value;
+} {~/TEMP B-TREE/}
+do_execsql_test 4.2.3 {
+  explain query plan
+  SELECT typeID, key, value FROM Records 
+  WHERE typeID = 2 AND (key = 'x' COLLATE binary)
+  ORDER BY key, value;
+} {~/TEMP B-TREE/}
+do_execsql_test 4.2.4 {
+  explain query plan
+  SELECT typeID, key, value FROM Records 
+  WHERE typeID = 2 
+  ORDER BY key, value;
+} {~/TEMP B-TREE/}
+
+db collate hello [list string match]
+do_execsql_test 4.3.1 {
+  CREATE TABLE t5(a INTEGER PRIMARY KEY, b COLLATE hello, c, d);
+}
+db close
+sqlite3 db test.db
+do_catchsql_test 4.3.2 {
+  SELECT a FROM t5 WHERE b='def' ORDER BY b;
+} {1 {no such collation sequence: hello}}
+
+# 2020-02-13 ticket 41c1456a6e61c0e7
+do_execsql_test 4.4.0 {
+  DROP TABLE t1;
+  CREATE TABLE t1(a);
+  DROP TABLE t2;
+  CREATE TABLE t2(b INTEGER PRIMARY KEY, c INT);
+  SELECT DISTINCT *
+    FROM t1 LEFT JOIN t2 ON b=c AND b=(SELECT a FROM t1)
+   WHERE c>10;
+} {}

 finish_test
@@ -306,4 +306,12 @@ foreach {id x} {
  } {{} 1.0 ok}
 }

+# 2020-03-10 ticket e0c2ad1aa8a9c691
+reset_db
+do_execsql_test select3-9.100 {
+  CREATE TABLE t0(c0 REAL, c1 REAL GENERATED ALWAYS AS (c0));
+  INSERT INTO t0(c0) VALUES (1);
+  SELECT * FROM t0 GROUP BY c0;
+} {1.0 1.0}
+
 finish_test
@@ -388,17 +388,14 @@ do_test shell1-3.10.2 {
 # .import FILE TABLE     Import data from FILE into TABLE
 do_test shell1-3.11.1 {
  catchcmd "test.db" ".import"
-} {1 {Usage: .import FILE TABLE}}
+} {/1 .ERROR: missing FILE argument.*/}
 do_test shell1-3.11.2 {
  catchcmd "test.db" ".import FOO"
-} {1 {Usage: .import FILE TABLE}}
-#do_test shell1-3.11.2 {
-#  catchcmd "test.db" ".import FOO BAR"
-#} {1 {Error: no such table: BAR}}
+} {/1 .ERROR: missing TABLE argument.*/}
 do_test shell1-3.11.3 {
  # too many arguments
  catchcmd "test.db" ".import FOO BAR BAD"
-} {1 {Usage: .import FILE TABLE}}
+} {/1 .ERROR: extra argument: "BAD".*./}

 # .indexes ?TABLE?       Show names of all indexes
 #                          If TABLE specified, only show indexes for tables
@@ -32,17 +32,14 @@ forcedelete test.db test.db-journal test.db-wal
 # .import FILE TABLE     Import data from FILE into TABLE
 do_test shell5-1.1.1 {
  catchcmd "test.db" ".import"
-} {1 {Usage: .import FILE TABLE}}
+} {/1 .ERROR: missing FILE argument.*/}
 do_test shell5-1.1.2 {
  catchcmd "test.db" ".import FOO"
-} {1 {Usage: .import FILE TABLE}}
-#do_test shell5-1.1.2 {
-#  catchcmd "test.db" ".import FOO BAR"
-#} {1 {Error: no such table: BAR}}
+} {/1 .ERROR: missing TABLE argument.*/}
 do_test shell5-1.1.3 {
  # too many arguments
  catchcmd "test.db" ".import FOO BAR BAD"
-} {1 {Usage: .import FILE TABLE}}
+} {/1 .ERROR: extra argument.*/}

 # .separator STRING      Change separator used by output mode and .import
 do_test shell5-1.2.1 {
@@ -2148,7 +2148,8 @@ int main(int argc, char **argv){
    sqlite3_config(SQLITE_CONFIG_LOOKASIDE, 0, 0);
  }
 #endif
- 
+  sqlite3_initialize();
+
  /* Open the database and the input file */
  if( sqlite3_open(zDbName, &g.db) ){
    fatal_error("Cannot open database file: %s\n", zDbName);
@@ -33,28 +33,28 @@ do_test tkt-3fe89-1.1 {
    INSERT INTO t1 VALUES(hex_to_utf16be('D800'));
    SELECT hex(x) FROM t1;
  }
-} {EDA080}
+} {EFBFBD}
 do_test tkt-3fe89-1.2 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16le('00D8'));
    SELECT hex(x) FROM t1;
  }
-} {EDA080}
+} {EFBFBD}
 do_test tkt-3fe89-1.3 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16be('DFFF'));
    SELECT hex(x) FROM t1;
  }
-} {EDBFBF}
+} {EFBFBD}
 do_test tkt-3fe89-1.4 {
  db eval {
    DELETE FROM t1;
    INSERT INTO t1 VALUES(hex_to_utf16le('FFDF'));
    SELECT hex(x) FROM t1;
  }
-} {EDBFBF}
+} {EFBFBD}


 finish_test
@@ -337,6 +337,22 @@ do_searchcount_test 6.6.4 {
  SELECT c FROM x1 WHERE b=6 OR c=11 OR a=1
 } {7 11 3 search 7}

+# 2020-02-22 ticket aa4378693018aa99
+# In the OP_Column opcode, if a cursor is marked with OP_NullRow
+# (because it is the right table of a LEFT JOIN that does not match)
+# then do not substitute index cursors, as the index cursors do not
+# have the VdbeCursor.nullRow flag set.
+#
+do_execsql_test 6.7 {
+  DROP TABLE IF EXISTS t1;
+  DROP TABLE IF EXISTS t2;
+  CREATE TABLE t1(a UNIQUE, b UNIQUE);
+  INSERT INTO t1(a,b) VALUES(null,2);
+  CREATE VIEW t2 AS SELECT * FROM t1 WHERE b<10 OR a<7 ORDER BY b;
+  SELECT t1.* FROM t1 LEFT JOIN t2 ON abs(t1.a)=abs(t2.b);
+} {{} 2}
+
+
 #-------------------------------------------------------------------------
 #
 do_execsql_test 7.0 {
@@ -144,5 +144,17 @@ do_execsql_test 530 {
  SELECT 200, * FROM t0, v0 WHERE t0.c0 = 0 AND v0.c0 = t0.c0;
 } {}

+# 2020-02-13: ticket 1dcb4d44964846ad
+# A problem introduced while making optimizations on the fixes above.
+#
+reset_db
+do_execsql_test 600 {
+  CREATE TABLE t1(x TEXT);
+  CREATE TABLE t2(y TEXT);
+  INSERT INTO t1 VALUES('good'),('bad');
+  INSERT INTO t2 VALUES('good'),('bad');
+  SELECT * FROM t1 JOIN t2 ON x=y
+   WHERE x='good' AND y='good';
+} {good good}

 finish_test
@@ -1593,5 +1593,66 @@ do_execsql_test 48.1 {
    FROM (SELECT (SELECT sum(a) FROM t1 GROUP BY a) AS x FROM t1);
 } {2 2 2}

+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 49.1 {
+  CREATE TABLE t1 (a PRIMARY KEY);
+  INSERT INTO t1 VALUES(1);
+}
+
+do_execsql_test 49.2 {
+  SELECT b AS c FROM (
+    SELECT a AS b FROM (
+      SELECT a FROM t1 WHERE a=1 OR (SELECT sum(a) OVER ())
+    ) 
+    WHERE b=1 OR b<10
+  ) 
+  WHERE c=1 OR c>=10;
+} {1}
+
+
+#-------------------------------------------------------------------------
+reset_db
+do_execsql_test 50.0 {
+  CREATE TABLE t1 (a DOUBLE PRIMARY KEY);
+  INSERT INTO t1 VALUES(10.0);
+}
+
+do_execsql_test 50.1 {
+  SELECT * FROM t1 WHERE a%1 OR (SELECT sum(a) OVER (ORDER BY a%2))
+} {10.0}
+
+do_execsql_test 50.2 {
+  SELECT * FROM (
+    SELECT * FROM t1 WHERE a%1 OR (SELECT sum(a) OVER (ORDER BY a%2))
+  ) 
+  WHERE a=1 OR ( (SELECT sum(a) OVER (ORDER BY a%4)) AND a<=10 )
+} {10.0}
+
+do_execsql_test 50.3 {
+  SELECT a FROM (
+    SELECT * FROM (
+      SELECT * FROM t1 WHERE a%1 OR (SELECT sum(a) OVER (ORDER BY a%2))
+    ) 
+    WHERE a=1 OR ( (SELECT sum(a) OVER (ORDER BY a%4)) AND a<=10 )
+  ) 
+  WHERE a=1 OR a=10.0
+} {10.0}
+
+do_execsql_test 50.4 {
+  SELECT a FROM (
+    SELECT * FROM (
+      SELECT * FROM t1 WHERE a%1 OR (SELECT sum(a) OVER (ORDER BY a%2))
+    ) 
+    WHERE a=1 OR ( (SELECT sum(a) OVER (ORDER BY a%4)) AND a<=10 )
+  ) 
+  WHERE a=1 OR ((SELECT sum(a) OVER(ORDER BY a%8)) AND 10<=a)
+} {10.0}
+
+do_execsql_test 50.5 {
+SELECT * FROM (SELECT * FROM t1 NATURAL JOIN t1 WHERE a%1 OR ((SELECT sum(a)OVER(ORDER BY a)) AND a<=10)) NATURAL JOIN t1 WHERE a=1 OR ((SELECT sum((SELECT * FROM (SELECT * FROM (SELECT * FROM t1 NATURAL JOIN t1 WHERE a%1 OR ((SELECT sum(a)OVER(ORDER BY a)) AND a<=10)) NATURAL JOIN t1 WHERE a=1 OR ((SELECT sum((SELECT * FROM t1 NATURAL JOIN t1 WHERE a=1 OR ((SELECT sum(a)OVER(ORDER BY a)) AND a<=10)))OVER(ORDER BY a% 1 )) AND a<=10)) NATURAL JOIN t1 WHERE a=1 OR ((SELECT sum(a)OVER(ORDER BY a)) AND 10<=a)))OVER(ORDER BY a%5)) AND a<=10);
+} {10.0}

 finish_test
+
+
@@ -263,4 +263,15 @@ do_faultsim_test 11 -faults oom* -prep {
  faultsim_test_result {0 {}}
 }

+do_faultsim_test 11 -faults oom* -prep {
+} -body {
+  execsql {
+    VALUES(false),(current_date collate binary) 
+    intersect 
+    values(count() not like group_concat(cast(cast(0e00 as text) as integer) <= NULL || 0.4e-0 || 0x8 & true ) over () collate rtrim);
+  }
+} -test {
+  faultsim_test_result {0 {}}
+}
+
 finish_test
--- a/Show More
+++ b/Show More
@@ -1 +1 @@
 .31.1
 .32.0