Pull in all the latest changes from trunk.

FossilOrigin-Name: af3ca4c6e557e6bc92584586b5a97d9be41b0b82
2025-08-08 14:02:16 +03:00 · 2013-07-09 13:05:49 +00:00
parent bded90b487 1f10c28618
commit 888e16e7c5
57 changed files with 1986 additions and 346 deletions
--- a/ext/fts1/fts1.c
+++ b/ext/fts1/fts1.c
@@ -3335,8 +3335,11 @@ int sqlite3Fts1Init(sqlite3 *db){
 }

 #if !SQLITE_CORE
-int sqlite3_extension_init(sqlite3 *db, char **pzErrMsg,
-                           const sqlite3_api_routines *pApi){
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_fts1_init(sqlite3 *db, char **pzErrMsg,
+                      const sqlite3_api_routines *pApi){
  SQLITE_EXTENSION_INIT2(pApi)
  return sqlite3Fts1Init(db);
 }
--- a/ext/fts1/fulltext.c
+++ b/ext/fts1/fulltext.c
@@ -852,8 +852,14 @@ static void fulltext_vtab_destroy(fulltext_vtab *v){
 ** argv[3] - tokenizer name (optional, a sensible default is provided)
 ** argv[4..] - passed to tokenizer (optional based on tokenizer)
 **/
-static int fulltextConnect(sqlite3 *db, void *pAux, int argc, char **argv,
-                           sqlite3_vtab **ppVTab){
+static int fulltextConnect(
+  sqlite3 *db,
+  void *pAux,
+  int argc,
+  const char * const *argv,
+  sqlite3_vtab **ppVTab,
+  char **pzErr
+){
  int rc;
  fulltext_vtab *v;
  sqlite3_tokenizer_module *m = NULL;
@@ -898,8 +904,14 @@ static int fulltextConnect(sqlite3 *db, void *pAux, int argc, char **argv,
  return SQLITE_OK;
 }

-static int fulltextCreate(sqlite3 *db, void *pAux, int argc, char **argv,
-                          sqlite3_vtab **ppVTab){
+static int fulltextCreate(
+  sqlite3 *db,
+  void *pAux,
+  int argc,
+  const char * const *argv,
+  sqlite3_vtab **ppVTab,
+  char **pzErr
+){
  int rc;
  assert( argc>=3 );

@@ -934,7 +946,7 @@ static int fulltextCreate(sqlite3 *db, void *pAux, int argc, char **argv,
    "create index %_index on %_term(term, first)");
  if( rc!=SQLITE_OK ) return rc;

-  return fulltextConnect(db, pAux, argc, argv, ppVTab);
+  return fulltextConnect(db, pAux, argc, argv, ppVTab, pzErr);
 }

 /* Decide how to handle an SQL query.
@@ -1488,8 +1500,11 @@ int fulltext_init(sqlite3 *db){
 }

 #if !SQLITE_CORE
-int sqlite3_extension_init(sqlite3 *db, char **pzErrMsg,
-                           const sqlite3_api_routines *pApi){
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_fulltext_init(sqlite3 *db, char **pzErrMsg,
+                          const sqlite3_api_routines *pApi){
 SQLITE_EXTENSION_INIT2(pApi)
 return fulltext_init(db);
 }
--- a/ext/fts2/fts2.c
+++ b/ext/fts2/fts2.c
@@ -6844,7 +6844,10 @@ int sqlite3Fts2Init(sqlite3 *db){
 }

 #if !SQLITE_CORE
-int sqlite3_extension_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_fts2_init(
  sqlite3 *db, 
  char **pzErrMsg,
  const sqlite3_api_routines *pApi
--- a/ext/fts2/fts2_hash.c
+++ b/ext/fts2/fts2_hash.c
@@ -30,6 +30,8 @@
 #include <string.h>

 #include "sqlite3.h"
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT3
 #include "fts2_hash.h"

 /*
--- a/ext/fts2/fts2_porter.c
+++ b/ext/fts2/fts2_porter.c
@@ -30,6 +30,9 @@
 #include <stdio.h>
 #include <string.h>

+#include "sqlite3.h"
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT3
 #include "fts2_tokenizer.h"

 /*
--- a/ext/fts2/fts2_tokenizer.c
+++ b/ext/fts2/fts2_tokenizer.c
@@ -28,7 +28,7 @@

 #include "sqlite3.h"
 #include "sqlite3ext.h"
-SQLITE_EXTENSION_INIT1
+SQLITE_EXTENSION_INIT3

 #include "fts2_hash.h"
 #include "fts2_tokenizer.h"
--- a/ext/fts2/fts2_tokenizer1.c
+++ b/ext/fts2/fts2_tokenizer1.c
@@ -30,6 +30,9 @@
 #include <stdio.h>
 #include <string.h>

+#include "sqlite3.h"
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT3
 #include "fts2_tokenizer.h"

 typedef struct simple_tokenizer {
--- a/ext/fts3/fts3.c
+++ b/ext/fts3/fts3.c
@@ -1095,7 +1095,7 @@ static int fts3InitVtab(
  nByte = sizeof(const char *) * (argc-2);
  aCol = (const char **)sqlite3_malloc(nByte);
  if( aCol ){
-    memset(aCol, 0, nByte);
+    memset((void*)aCol, 0, nByte);
    azNotindexed = (char **)sqlite3_malloc(nByte);
  }
  if( azNotindexed ){
@@ -1346,7 +1346,7 @@ static int fts3InitVtab(

  /* Fill in the abNotindexed array */
  for(iCol=0; iCol<nCol; iCol++){
-    int n = strlen(p->azColumn[iCol]);
+    int n = (int)strlen(p->azColumn[iCol]);
    for(i=0; i<nNotindexed; i++){
      char *zNot = azNotindexed[i];
      if( zNot && 0==sqlite3_strnicmp(p->azColumn[iCol], zNot, n) ){
@@ -5376,7 +5376,10 @@ int sqlite3Fts3Corrupt(){
 /*
 ** Initialize API pointer table, if required.
 */
-int sqlite3_extension_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_fts3_init(
  sqlite3 *db, 
  char **pzErrMsg,
  const sqlite3_api_routines *pApi
--- a/ext/fts3/fts3Int.h
+++ b/ext/fts3/fts3Int.h
@@ -32,7 +32,7 @@
 /* If not building as part of the core, include sqlite3ext.h. */
 #ifndef SQLITE_CORE
 # include "sqlite3ext.h" 
-extern const sqlite3_api_routines *sqlite3_api;
+SQLITE_EXTENSION_INIT3
 #endif

 #include "sqlite3.h"
--- a/ext/icu/icu.c
+++ b/ext/icu/icu.c
@@ -488,7 +488,10 @@ int sqlite3IcuInit(sqlite3 *db){
 }

 #if !SQLITE_CORE
-int sqlite3_extension_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_icu_init(
  sqlite3 *db, 
  char **pzErrMsg,
  const sqlite3_api_routines *pApi
--- a/ext/misc/ieee754.c
+++ b/ext/misc/ieee754.c
@@ -18,11 +18,11 @@
 **
 ** In the first form, the value X should be a floating-point number.
 ** The function will return a string of the form 'ieee754(Y,Z)' where
-** Y and Z are integers such that X==Y*pow(w.0,Z).
+** Y and Z are integers such that X==Y*pow(2,Z).
 **
 ** In the second form, Y and Z are integers which are the mantissa and
 ** base-2 exponent of a new floating point number.  The function returns
-** a floating-point value equal to Y*pow(2.0,Z).
+** a floating-point value equal to Y*pow(2,Z).
 **
 ** Examples:
 **
--- a/ext/misc/nextchar.c
+++ b/ext/misc/nextchar.c
@@ -10,12 +10,22 @@
 **
 ******************************************************************************
 **
-** This file contains code to implement the next_char(A,T,F,W) SQL function.
+** This file contains code to implement the next_char(A,T,F,W,C) SQL function.
 **
-** The next_char(A,T,F,H) function finds all valid "next" characters for
-** string A given the vocabulary in T.F.  The T.F field should be indexed.
-** If the W value exists and is a non-empty string, then it is an SQL
-** expression that limits the entries in T.F that will be considered.
+** The next_char(A,T,F,W,C) function finds all valid "next" characters for
+** string A given the vocabulary in T.F.  If the W value exists and is a
+** non-empty string, then it is an SQL expression that limits the entries
+** in T.F that will be considered.  If C exists and is a non-empty string,
+** then it is the name of the collating sequence to use for comparison.  If
+** 
+** Only the first three arguments are required.  If the C parameter is 
+** omitted or is NULL or is an empty string, then the default collating 
+** sequence of T.F is used for comparision.  If the W parameter is omitted
+** or is NULL or is an empty string, then no filtering of the output is
+** done.
+**
+** The T.F column should be indexed using collation C or else this routine
+** will be quite slow.
 **
 ** For example, suppose an application has a dictionary like this:
 **
@@ -184,6 +194,9 @@ static void nextCharFunc(
  const unsigned char *zTable = sqlite3_value_text(argv[1]);
  const unsigned char *zField = sqlite3_value_text(argv[2]);
  const unsigned char *zWhere;
+  const unsigned char *zCollName;
+  char *zWhereClause = 0;
+  char *zColl = 0;
  char *zSql;
  int rc;

@@ -192,25 +205,41 @@ static void nextCharFunc(
  c.zPrefix = sqlite3_value_text(argv[0]);
  c.nPrefix = sqlite3_value_bytes(argv[0]);
  if( zTable==0 || zField==0 || c.zPrefix==0 ) return;
-  if( argc<4
-   || (zWhere = sqlite3_value_text(argv[3]))==0
-   || zWhere[0]==0
+  if( argc>=4
+   && (zWhere = sqlite3_value_text(argv[3]))!=0
+   && zWhere[0]!=0
  ){
-    zSql = sqlite3_mprintf(
-        "SELECT \"%w\" FROM \"%w\""
-        " WHERE \"%w\">=(?1 || ?2)"
-        "   AND \"%w\"<=(?1 || char(1114111))" /* 1114111 == 0x10ffff */
-        " ORDER BY 1 ASC LIMIT 1",
-        zField, zTable, zField, zField);
+    zWhereClause = sqlite3_mprintf("AND (%s)", zWhere);
+    if( zWhereClause==0 ){
+      sqlite3_result_error_nomem(context);
+      return;
+    }
  }else{
-    zSql = sqlite3_mprintf(
-        "SELECT \"%w\" FROM \"%w\""
-        " WHERE \"%w\">=(?1 || ?2)"
-        "   AND \"%w\"<=(?1 || char(1114111))" /* 1114111 == 0x10ffff */
-        "   AND (%s)"
-        " ORDER BY 1 ASC LIMIT 1",
-        zField, zTable, zField, zField, zWhere);
+    zWhereClause = "";
  }
+  if( argc>=5
+   && (zCollName = sqlite3_value_text(argv[4]))!=0
+   && zCollName[0]!=0 
+  ){
+    zColl = sqlite3_mprintf("collate \"%w\"", zCollName);
+    if( zColl==0 ){
+      sqlite3_result_error_nomem(context);
+      if( zWhereClause[0] ) sqlite3_free(zWhereClause);
+      return;
+    }
+  }else{
+    zColl = "";
+  }
+  zSql = sqlite3_mprintf(
+    "SELECT \"%w\" FROM \"%w\""
+    " WHERE \"%w\">=(?1 || ?2) %s"
+    "   AND \"%w\"<=(?1 || char(1114111)) %s" /* 1114111 == 0x10ffff */
+    "   %s"
+    " ORDER BY 1 %s ASC LIMIT 1",
+    zField, zTable, zField, zColl, zField, zColl, zWhereClause, zColl
+  );
+  if( zWhereClause[0] ) sqlite3_free(zWhereClause);
+  if( zColl[0] ) sqlite3_free(zColl);
  if( zSql==0 ){
    sqlite3_result_error_nomem(context);
    return;
@@ -261,5 +290,9 @@ int sqlite3_nextchar_init(
    rc = sqlite3_create_function(db, "next_char", 4, SQLITE_UTF8, 0,
                                 nextCharFunc, 0, 0);
  }
+  if( rc==SQLITE_OK ){
+    rc = sqlite3_create_function(db, "next_char", 5, SQLITE_UTF8, 0,
+                                 nextCharFunc, 0, 0);
+  }
  return rc;
 }
--- a/ext/misc/percentile.c
+++ b/ext/misc/percentile.c
@@ -190,7 +190,7 @@ static void percentFinal(sqlite3_context *pCtx){
  if( p->nUsed ){
    qsort(p->a, p->nUsed, sizeof(double), doubleCmp);
    ix = (p->rPct-1.0)*(p->nUsed-1)*0.01;
-    i1 = ix;
+    i1 = (unsigned)ix;
    i2 = ix==(double)i1 || i1==p->nUsed-1 ? i1 : i1+1;
    v1 = p->a[i1];
    v2 = p->a[i2];
--- a/ext/misc/vtshim.c
+++ b/ext/misc/vtshim.c
@@ -0,0 +1,547 @@
+/*
+** 2013-06-12
+**
+** 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.
+**
+*************************************************************************
+**
+** A shim that sits between the SQLite virtual table interface and
+** runtimes with garbage collector based memory management.
+*/
+#include "sqlite3ext.h"
+SQLITE_EXTENSION_INIT1
+#include <assert.h>
+#include <string.h>
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+
+/* Forward references */
+typedef struct vtshim_aux vtshim_aux;
+typedef struct vtshim_vtab vtshim_vtab;
+typedef struct vtshim_cursor vtshim_cursor;
+
+
+/* The vtshim_aux argument is the auxiliary parameter that is passed
+** into sqlite3_create_module_v2().
+*/
+struct vtshim_aux {
+  void *pChildAux;              /* pAux for child virtual tables */
+  void (*xChildDestroy)(void*); /* Destructor for pChildAux */
+  sqlite3_module *pMod;         /* Methods for child virtual tables */
+  sqlite3 *db;                  /* The database to which we are attached */
+  char *zName;                  /* Name of the module */
+  int bDisposed;                /* True if disposed */
+  vtshim_vtab *pAllVtab;        /* List of all vtshim_vtab objects */
+  sqlite3_module sSelf;         /* Methods used by this shim */
+};
+
+/* A vtshim virtual table object */
+struct vtshim_vtab {
+  sqlite3_vtab base;       /* Base class - must be first */
+  sqlite3_vtab *pChild;    /* Child virtual table */
+  vtshim_aux *pAux;        /* Pointer to vtshim_aux object */
+  vtshim_cursor *pAllCur;  /* List of all cursors */
+  vtshim_vtab **ppPrev;    /* Previous on list */
+  vtshim_vtab *pNext;      /* Next on list */
+};
+
+/* A vtshim cursor object */
+struct vtshim_cursor {
+  sqlite3_vtab_cursor base;    /* Base class - must be first */
+  sqlite3_vtab_cursor *pChild; /* Cursor generated by the managed subclass */
+  vtshim_cursor **ppPrev;      /* Previous on list of all cursors */
+  vtshim_cursor *pNext;        /* Next on list of all cursors */
+};
+
+/* Macro used to copy the child vtable error message to outer vtable */
+#define VTSHIM_COPY_ERRMSG()                                             \
+  do {                                                                   \
+    sqlite3_free(pVtab->base.zErrMsg);                                   \
+    pVtab->base.zErrMsg = sqlite3_mprintf("%s", pVtab->pChild->zErrMsg); \
+  } while (0)
+
+/* Methods for the vtshim module */
+static int vtshimCreate(
+  sqlite3 *db,
+  void *ppAux,
+  int argc,
+  const char *const*argv,
+  sqlite3_vtab **ppVtab,
+  char **pzErr
+){
+  vtshim_aux *pAux = (vtshim_aux*)ppAux;
+  vtshim_vtab *pNew;
+  int rc;
+
+  assert( db==pAux->db );
+  if( pAux->bDisposed ){
+    if( pzErr ){
+      *pzErr = sqlite3_mprintf("virtual table was disposed: \"%s\"",
+                               pAux->zName);
+    }
+    return SQLITE_ERROR;
+  }
+  pNew = sqlite3_malloc( sizeof(*pNew) );
+  *ppVtab = (sqlite3_vtab*)pNew;
+  if( pNew==0 ) return SQLITE_NOMEM;
+  memset(pNew, 0, sizeof(*pNew));
+  rc = pAux->pMod->xCreate(db, pAux->pChildAux, argc, argv,
+                           &pNew->pChild, pzErr);
+  if( rc ){
+    sqlite3_free(pNew);
+    *ppVtab = 0;
+  }
+  pNew->pAux = pAux;
+  pNew->ppPrev = &pAux->pAllVtab;
+  pNew->pNext = pAux->pAllVtab;
+  if( pAux->pAllVtab ) pAux->pAllVtab->ppPrev = &pNew->pNext;
+  pAux->pAllVtab = pNew;
+  return rc;
+}
+
+static int vtshimConnect(
+  sqlite3 *db,
+  void *ppAux,
+  int argc,
+  const char *const*argv,
+  sqlite3_vtab **ppVtab,
+  char **pzErr
+){
+  vtshim_aux *pAux = (vtshim_aux*)ppAux;
+  vtshim_vtab *pNew;
+  int rc;
+
+  assert( db==pAux->db );
+  if( pAux->bDisposed ){
+    if( pzErr ){
+      *pzErr = sqlite3_mprintf("virtual table was disposed: \"%s\"",
+                               pAux->zName);
+    }
+    return SQLITE_ERROR;
+  }
+  pNew = sqlite3_malloc( sizeof(*pNew) );
+  *ppVtab = (sqlite3_vtab*)pNew;
+  if( pNew==0 ) return SQLITE_NOMEM;
+  memset(pNew, 0, sizeof(*pNew));
+  rc = pAux->pMod->xConnect(db, pAux->pChildAux, argc, argv,
+                            &pNew->pChild, pzErr);
+  if( rc ){
+    sqlite3_free(pNew);
+    *ppVtab = 0;
+  }
+  pNew->pAux = pAux;
+  pNew->ppPrev = &pAux->pAllVtab;
+  pNew->pNext = pAux->pAllVtab;
+  if( pAux->pAllVtab ) pAux->pAllVtab->ppPrev = &pNew->pNext;
+  pAux->pAllVtab = pNew;
+  return rc;
+}
+
+static int vtshimBestIndex(
+  sqlite3_vtab *pBase,
+  sqlite3_index_info *pIdxInfo
+){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xBestIndex(pVtab->pChild, pIdxInfo);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimDisconnect(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc = SQLITE_OK;
+  if( !pAux->bDisposed ){
+    rc = pAux->pMod->xDisconnect(pVtab->pChild);
+  }
+  if( pVtab->pNext ) pVtab->pNext->ppPrev = pVtab->ppPrev;
+  *pVtab->ppPrev = pVtab->pNext;
+  sqlite3_free(pVtab);
+  return rc;
+}
+
+static int vtshimDestroy(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc = SQLITE_OK;
+  if( !pAux->bDisposed ){
+    rc = pAux->pMod->xDestroy(pVtab->pChild);
+  }
+  if( pVtab->pNext ) pVtab->pNext->ppPrev = pVtab->ppPrev;
+  *pVtab->ppPrev = pVtab->pNext;
+  sqlite3_free(pVtab);
+  return rc;
+}
+
+static int vtshimOpen(sqlite3_vtab *pBase, sqlite3_vtab_cursor **ppCursor){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  vtshim_cursor *pCur;
+  int rc;
+  *ppCursor = 0;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  pCur = sqlite3_malloc( sizeof(*pCur) );
+  if( pCur==0 ) return SQLITE_NOMEM;
+  memset(pCur, 0, sizeof(*pCur));
+  rc = pAux->pMod->xOpen(pVtab->pChild, &pCur->pChild);
+  if( rc ){
+    sqlite3_free(pCur);
+    VTSHIM_COPY_ERRMSG();
+    return rc;
+  }
+  pCur->pChild->pVtab = pVtab->pChild;
+  *ppCursor = &pCur->base;
+  pCur->ppPrev = &pVtab->pAllCur;
+  if( pVtab->pAllCur ) pVtab->pAllCur->ppPrev = &pCur->pNext;
+  pCur->pNext = pVtab->pAllCur;
+  pVtab->pAllCur = pCur;
+  return SQLITE_OK;
+}
+
+static int vtshimClose(sqlite3_vtab_cursor *pX){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc = SQLITE_OK;
+  if( !pAux->bDisposed ){
+    rc = pAux->pMod->xClose(pCur->pChild);
+    if( rc!=SQLITE_OK ){
+      VTSHIM_COPY_ERRMSG();
+    }
+  }
+  if( pCur->pNext ) pCur->pNext->ppPrev = pCur->ppPrev;
+  *pCur->ppPrev = pCur->pNext;
+  sqlite3_free(pCur);
+  return rc;
+}
+
+static int vtshimFilter(
+  sqlite3_vtab_cursor *pX,
+  int idxNum,
+  const char *idxStr,
+  int argc,
+  sqlite3_value **argv
+){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xFilter(pCur->pChild, idxNum, idxStr, argc, argv);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimNext(sqlite3_vtab_cursor *pX){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xNext(pCur->pChild);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimEof(sqlite3_vtab_cursor *pX){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return 1;
+  rc = pAux->pMod->xEof(pCur->pChild);
+  VTSHIM_COPY_ERRMSG();
+  return rc;
+}
+
+static int vtshimColumn(sqlite3_vtab_cursor *pX, sqlite3_context *ctx, int i){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xColumn(pCur->pChild, ctx, i);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimRowid(sqlite3_vtab_cursor *pX, sqlite3_int64 *pRowid){
+  vtshim_cursor *pCur = (vtshim_cursor*)pX;
+  vtshim_vtab *pVtab = (vtshim_vtab*)pCur->base.pVtab;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xRowid(pCur->pChild, pRowid);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimUpdate(
+  sqlite3_vtab *pBase,
+  int argc,
+  sqlite3_value **argv,
+  sqlite3_int64 *pRowid
+){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xUpdate(pVtab->pChild, argc, argv, pRowid);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimBegin(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xBegin(pVtab->pChild);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimSync(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xSync(pVtab->pChild);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimCommit(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xCommit(pVtab->pChild);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimRollback(sqlite3_vtab *pBase){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xRollback(pVtab->pChild);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimFindFunction(
+  sqlite3_vtab *pBase,
+  int nArg,
+  const char *zName,
+  void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
+  void **ppArg
+){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return 0;
+  rc = pAux->pMod->xFindFunction(pVtab->pChild, nArg, zName, pxFunc, ppArg);
+  VTSHIM_COPY_ERRMSG();
+  return rc;
+}
+
+static int vtshimRename(sqlite3_vtab *pBase, const char *zNewName){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xRename(pVtab->pChild, zNewName);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimSavepoint(sqlite3_vtab *pBase, int n){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xSavepoint(pVtab->pChild, n);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimRelease(sqlite3_vtab *pBase, int n){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xRelease(pVtab->pChild, n);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+static int vtshimRollbackTo(sqlite3_vtab *pBase, int n){
+  vtshim_vtab *pVtab = (vtshim_vtab*)pBase;
+  vtshim_aux *pAux = pVtab->pAux;
+  int rc;
+  if( pAux->bDisposed ) return SQLITE_ERROR;
+  rc = pAux->pMod->xRollbackTo(pVtab->pChild, n);
+  if( rc!=SQLITE_OK ){
+    VTSHIM_COPY_ERRMSG();
+  }
+  return rc;
+}
+
+/* The destructor function for a disposible module */
+static void vtshimAuxDestructor(void *pXAux){
+  vtshim_aux *pAux = (vtshim_aux*)pXAux;
+  assert( pAux->pAllVtab==0 );
+  if( !pAux->bDisposed && pAux->xChildDestroy ){
+    pAux->xChildDestroy(pAux->pChildAux);
+  }
+  sqlite3_free(pAux->zName);
+  sqlite3_free(pAux->pMod);
+  sqlite3_free(pAux);
+}
+
+static int vtshimCopyModule(
+  const sqlite3_module *pMod,   /* Source module to be copied */
+  sqlite3_module **ppMod        /* Destination for copied module */
+){
+  sqlite3_module *p;
+  if( !pMod || !ppMod ) return SQLITE_ERROR;
+  p = sqlite3_malloc( sizeof(*p) );
+  if( p==0 ) return SQLITE_NOMEM;
+  memcpy(p, pMod, sizeof(*p));
+  *ppMod = p;
+  return SQLITE_OK;
+}
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+void *sqlite3_create_disposable_module(
+  sqlite3 *db,               /* SQLite connection to register module with */
+  const char *zName,         /* Name of the module */
+  const sqlite3_module *p,   /* Methods for the module */
+  void *pClientData,         /* Client data for xCreate/xConnect */
+  void(*xDestroy)(void*)     /* Module destructor function */
+){
+  vtshim_aux *pAux;
+  sqlite3_module *pMod;
+  int rc;
+  pAux = sqlite3_malloc( sizeof(*pAux) );
+  if( pAux==0 ){
+    if( xDestroy ) xDestroy(pClientData);
+    return 0;
+  }
+  rc = vtshimCopyModule(p, &pMod);
+  if( rc!=SQLITE_OK ){
+    sqlite3_free(pAux);
+    return 0;
+  }
+  pAux->pChildAux = pClientData;
+  pAux->xChildDestroy = xDestroy;
+  pAux->pMod = pMod;
+  pAux->db = db;
+  pAux->zName = sqlite3_mprintf("%s", zName);
+  pAux->bDisposed = 0;
+  pAux->pAllVtab = 0;
+  pAux->sSelf.iVersion = p->iVersion<=2 ? p->iVersion : 2;
+  pAux->sSelf.xCreate = p->xCreate ? vtshimCreate : 0;
+  pAux->sSelf.xConnect = p->xConnect ? vtshimConnect : 0;
+  pAux->sSelf.xBestIndex = p->xBestIndex ? vtshimBestIndex : 0;
+  pAux->sSelf.xDisconnect = p->xDisconnect ? vtshimDisconnect : 0;
+  pAux->sSelf.xDestroy = p->xDestroy ? vtshimDestroy : 0;
+  pAux->sSelf.xOpen = p->xOpen ? vtshimOpen : 0;
+  pAux->sSelf.xClose = p->xClose ? vtshimClose : 0;
+  pAux->sSelf.xFilter = p->xFilter ? vtshimFilter : 0;
+  pAux->sSelf.xNext = p->xNext ? vtshimNext : 0;
+  pAux->sSelf.xEof = p->xEof ? vtshimEof : 0;
+  pAux->sSelf.xColumn = p->xColumn ? vtshimColumn : 0;
+  pAux->sSelf.xRowid = p->xRowid ? vtshimRowid : 0;
+  pAux->sSelf.xUpdate = p->xUpdate ? vtshimUpdate : 0;
+  pAux->sSelf.xBegin = p->xBegin ? vtshimBegin : 0;
+  pAux->sSelf.xSync = p->xSync ? vtshimSync : 0;
+  pAux->sSelf.xCommit = p->xCommit ? vtshimCommit : 0;
+  pAux->sSelf.xRollback = p->xRollback ? vtshimRollback : 0;
+  pAux->sSelf.xFindFunction = p->xFindFunction ? vtshimFindFunction : 0;
+  pAux->sSelf.xRename = p->xRename ? vtshimRename : 0;
+  if( p->iVersion>=2 ){
+    pAux->sSelf.xSavepoint = p->xSavepoint ? vtshimSavepoint : 0;
+    pAux->sSelf.xRelease = p->xRelease ? vtshimRelease : 0;
+    pAux->sSelf.xRollbackTo = p->xRollbackTo ? vtshimRollbackTo : 0;
+  }else{
+    pAux->sSelf.xSavepoint = 0;
+    pAux->sSelf.xRelease = 0;
+    pAux->sSelf.xRollbackTo = 0;
+  }
+  rc = sqlite3_create_module_v2(db, zName, &pAux->sSelf,
+                                pAux, vtshimAuxDestructor);
+  return rc==SQLITE_OK ? (void*)pAux : 0;
+}
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+void sqlite3_dispose_module(void *pX){
+  vtshim_aux *pAux = (vtshim_aux*)pX;
+  if( !pAux->bDisposed ){
+    vtshim_vtab *pVtab;
+    vtshim_cursor *pCur;
+    for(pVtab=pAux->pAllVtab; pVtab; pVtab=pVtab->pNext){
+      for(pCur=pVtab->pAllCur; pCur; pCur=pCur->pNext){
+        pAux->pMod->xClose(pCur->pChild);
+      }
+      pAux->pMod->xDisconnect(pVtab->pChild);
+    }
+    pAux->bDisposed = 1;
+    if( pAux->xChildDestroy ) pAux->xChildDestroy(pAux->pChildAux);
+  }
+}
+
+
+#endif /* SQLITE_OMIT_VIRTUALTABLE */
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_vtshim_init(
+  sqlite3 *db,
+  char **pzErrMsg,
+  const sqlite3_api_routines *pApi
+){
+  SQLITE_EXTENSION_INIT2(pApi);
+  return SQLITE_OK;
+}
--- a/ext/rtree/rtree.c
+++ b/ext/rtree/rtree.c
@@ -3350,7 +3350,10 @@ int sqlite3_rtree_geometry_callback(
 }

 #if !SQLITE_CORE
-int sqlite3_extension_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_rtree_init(
  sqlite3 *db,
  char **pzErrMsg,
  const sqlite3_api_routines *pApi
--- a/118
+++ b/118
@@ -1,5 +1,5 @@
-C Fix\sa\sbug\spreventing\ssome\sFK\sconstraint\schecking\sfrom\sbeing\sdeferred\suntil\sthe\send\sof\schangeset\sapplication.
-D 2013-07-04T15:22:53.953
+C Pull\sin\sall\sthe\slatest\schanges\sfrom\strunk.
+D 2013-07-09T13:05:49.248
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in aff38bc64c582dd147f18739532198372587b0f0
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -51,36 +51,36 @@ F ext/async/sqlite3async.h f489b080af7e72aec0e1ee6f1d98ab6cf2e4dcef
 F ext/fts1/README.txt 20ac73b006a70bcfd80069bdaf59214b6cf1db5e
 F ext/fts1/ft_hash.c 3927bd880e65329bdc6f506555b228b28924921b
 F ext/fts1/ft_hash.h 06df7bba40dadd19597aa400a875dbc2fed705ea
-F ext/fts1/fts1.c 3e7b253e61aab0bb1fea808c7a0ce36c19432acc
+F ext/fts1/fts1.c f7739dc37500a613cc0dab8fc04d1b5577d02998
 F ext/fts1/fts1.h 6060b8f62c1d925ea8356cb1a6598073eb9159a6
 F ext/fts1/fts1_hash.c 3196cee866edbebb1c0521e21672e6d599965114
 F ext/fts1/fts1_hash.h e7f0d761353996a8175eda351104acfde23afcb0
 F ext/fts1/fts1_porter.c b1c7304b8988ba3f764a147cdd32043b4913ea7b
 F ext/fts1/fts1_tokenizer.h fdea722c38a9f82ed921642981234f666e47919c
 F ext/fts1/fts1_tokenizer1.c fd00d1fe4dc30dfc5c64cba695ce34f4af20d2fa
-F ext/fts1/fulltext.c d935e600d87bc86b7d64f55c7520ea41d6034c5c
+F ext/fts1/fulltext.c 37698e1909584f6d8ea67d1485e3ad39dbf42d19
 F ext/fts1/fulltext.h 08525a47852d1d62a0be81d3fc3fe2d23b094efd
 F ext/fts1/simple_tokenizer.c 1844d72f7194c3fd3d7e4173053911bf0661b70d
 F ext/fts1/tokenizer.h 0c53421b832366d20d720d21ea3e1f6e66a36ef9
 F ext/fts2/README.tokenizers 21e3684ea5a095b55d70f6878b4ce6af5932dfb7
 F ext/fts2/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
-F ext/fts2/fts2.c b48cc0bb657c0a421f4067b79aa0354bd16a046d
+F ext/fts2/fts2.c 72c816a9ae448049fbbe8f18a85698765fc7956c
 F ext/fts2/fts2.h da5f76c65163301d1068a971fd32f4119e3c95fa
-F ext/fts2/fts2_hash.c 2689e42e1107ea67207f725cf69cf8972d00cf93
+F ext/fts2/fts2_hash.c 011a1d32de45bb1b519a1fd0048e857d6a843558
 F ext/fts2/fts2_hash.h 1824b99dfd8d0225facbdb26a2c87289b2e7dcf8
 F ext/fts2/fts2_icu.c 51c5cd3c04954badd329fa738c95fcdb717b5188
-F ext/fts2/fts2_porter.c 747056987951f743e955c8479f1df21a565720fe
-F ext/fts2/fts2_tokenizer.c a86d08c9634fabfa237c8f379008de2e11248d36
+F ext/fts2/fts2_porter.c 2cd4a507bf3c3085fe66f59b0f2a325f65aaacf5
+F ext/fts2/fts2_tokenizer.c 3dbe8058e97afb55fff3ea844120ce3208b114cc
 F ext/fts2/fts2_tokenizer.h 27a1a99ca2d615cf7e142839b8d79e8751b4529e
-F ext/fts2/fts2_tokenizer1.c 0123d21078e053bd98fd6186c5c6dc6d67969f2e
+F ext/fts2/fts2_tokenizer1.c 07e223eecb483d448313b5f1553a4f299a7fb7a1
 F ext/fts2/mkfts2amal.tcl 974d5d438cb3f7c4a652639262f82418c1e4cff0
 F ext/fts3/README.content fdc666a70d5257a64fee209f97cf89e0e6e32b51
 F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
 F ext/fts3/README.tokenizers e0a8b81383ea60d0334d274fadf305ea14a8c314
 F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
-F ext/fts3/fts3.c 6dbb5c424144465782d5bf0d23be89907c972454
+F ext/fts3/fts3.c 0d6311cd433ea30c9e941b93bfeac2f9e6937980
 F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
-F ext/fts3/fts3Int.h a50cd231e906da818f00f0a81845bbf7bbeba002
+F ext/fts3/fts3Int.h c7a451661c2d9b2440b2008c3f63ce06f13181d6
 F ext/fts3/fts3_aux.c b02632f6dd0e375ce97870206d914ea6d8df5ccd
 F ext/fts3/fts3_expr.c f8eb1046063ba342c7114eba175cabb31c4a64e7
 F ext/fts3/fts3_hash.c 8dd2d06b66c72c628c2732555a32bc0943114914
@@ -104,20 +104,21 @@ F ext/fts3/unicode/CaseFolding.txt 8c678ca52ecc95e16bc7afc2dbf6fc9ffa05db8c
 F ext/fts3/unicode/UnicodeData.txt cd07314edb62d49fde34debdaf92fa2aa69011e7
 F ext/fts3/unicode/mkunicode.tcl dc6f268eb526710e2c6e496c372471d773d0c368
 F ext/icu/README.txt d9fbbad0c2f647c3fdf715fc9fd64af53aedfc43
-F ext/icu/icu.c 7538f98eab2854cf17fa5f7797bffa6c76e3863b
+F ext/icu/icu.c d415ccf984defeb9df2c0e1afcfaa2f6dc05eacb
 F ext/icu/sqliteicu.h 728867a802baa5a96de7495e9689a8e01715ef37
 F ext/misc/amatch.c eae8454cd9dcb287b2a3ec2e65a865a4ac5f0d06
 F ext/misc/closure.c 997c20ddf35f85ab399f4a02a557a9baa822ec32
 F ext/misc/fuzzer.c 136533c53cfce0957f0b48fa11dba27e21c5c01d
-F ext/misc/ieee754.c 2565ce373d842977efe0922dc50b8a41b3289556
-F ext/misc/nextchar.c 1131e2b36116ffc6fe6b2e3464bfdace27978b1e
-F ext/misc/percentile.c 4fb5e46c4312b0be74e8e497ac18f805f0e3e6c5
+F ext/misc/ieee754.c b0362167289170627659e84173f5d2e8fee8566e
+F ext/misc/nextchar.c 80ba262d23238efcfcb3d72d71aa4513098e26a6
+F ext/misc/percentile.c bcbee3c061b884eccb80e21651daaae8e1e43c63
 F ext/misc/regexp.c c25c65fe775f5d9801fb8573e36ebe73f2c0c2e0
 F ext/misc/rot13.c 1ac6f95f99b575907b9b09c81a349114cf9be45a
 F ext/misc/spellfix.c 6d7ce6105a4b7729f6c44ccdf1ab7e80d9707c02
+F ext/misc/vtshim.c 5fb6be7fe37659a8cbd1e16982d74cceacbc4543
 F ext/misc/wholenumber.c 784b12543d60702ebdd47da936e278aa03076212
 F ext/rtree/README 6315c0d73ebf0ec40dedb5aa0e942bc8b54e3761
-F ext/rtree/rtree.c 757abea591d4ff67c0ff4e8f9776aeda86b18c14
+F ext/rtree/rtree.c db516d7e59a14c92df10b552789509f2b632df3a
 F ext/rtree/rtree.h 834dbcb82dc85b2481cde6a07cdadfddc99e9b9e
 F ext/rtree/rtree1.test cf679265ecafff494a768ac9c2f43a70915a6290
 F ext/rtree/rtree2.test acbb3a4ce0f4fbc2c304d2b4b784cfa161856bba
@@ -154,7 +155,7 @@ F magic.txt f2b23a6bde8f1c6e86b957e4d94eab0add520b0d
 F main.mk f045701c66fec66208bc35d79de372340916e81e
 F mkdll.sh 7d09b23c05d56532e9d44a50868eb4b12ff4f74a
 F mkextu.sh 416f9b7089d80e5590a29692c9d9280a10dbad9f
-F mkextw.sh 4123480947681d9b434a5e7b1ee08135abe409ac
+F mkextw.sh d2a981497b404d6498f5ff3e3b1f3816bdfcb338
 F mkopcodec.awk f6fccee29e68493bfd90a2e0466ede5fa94dd2fc
 F mkopcodeh.awk 29b84656502eee5f444c3147f331ee686956ab0e
 F mkso.sh fd21c06b063bb16a5d25deea1752c2da6ac3ed83
@@ -175,7 +176,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
 F src/backup.c 43b348822db3e4cef48b2ae5a445fbeb6c73a165
 F src/bitvec.c 19a4ba637bd85f8f63fc8c9bae5ade9fb05ec1cb
 F src/btmutex.c 976f45a12e37293e32cae0281b15a21d48a8aaa7
-F src/btree.c 7fba377c29573adfc6091832e27ee1fcbefb51d0
+F src/btree.c 3f7bbfd72efb1cbf6a49515c376a031767ec930a
 F src/btree.h 6fa8a3ff2483d0bb64a9f0105a8cedeac9e00cca
 F src/btreeInt.h eecc84f02375b2bb7a44abbcbbe3747dde73edb2
 F src/build.c 42239cfd95533e4aacf4d58b4724c8f858de5ced
@@ -197,7 +198,7 @@ F src/journal.c b4124532212b6952f42eb2c12fa3c25701d8ba8d
 F src/legacy.c 0df0b1550b9cc1f58229644735e317ac89131f12
 F src/lempar.c cdf0a000315332fc9b50b62f3b5e22e080a0952b
 F src/loadext.c c48f7f3f170e502fe0cc20748e03c6e0b5a016c2
-F src/main.c 893986530b7ea4607643675babf08888cb63e48e
+F src/main.c a27560235a8e0e3f1a94aaca30189431bf61e776
 F src/malloc.c fe085aa851b666b7c375c1ff957643dc20a04bf6
 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
 F src/mem1.c 437c7c4af964895d4650f29881df63535caaa1fa
@@ -216,7 +217,7 @@ F src/os.h 4a46270a64e9193af4a0aaa3bc2c66dc07c29b3f
 F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
 F src/os_unix.c 9eafa5458cf2ff684ddccff82c9bb113c7cad847
 F src/os_win.c 074cb2b9bca6a1c2bd72acf04666cdc554bfaa9b
-F src/pager.c 79df56da9dd49aceaa4cac207484a9a82cba40ae
+F src/pager.c 5d2f7475260a8588f9c441bb309d2b7eaa7ded3b
 F src/pager.h 5cb78b8e1adfd5451e600be7719f5a99d87ac3b1
 F src/parse.y 9acfcc83ddbf0cf82f0ed9582ccf0ad6c366ff37
 F src/pcache.c f8043b433a57aba85384a531e3937a804432a346
@@ -224,21 +225,21 @@ F src/pcache.h a5e4f5d9f5d592051d91212c5949517971ae6222
 F src/pcache1.c d23d07716de96c7c0c2503ec5051a4384c3fb938
 F src/pragma.c 057f5b1343c9a79e3e6c0c542a3a08b85849ee61
 F src/prepare.c 2306be166bbeddf454e18bf8b21dba8388d05328
-F src/printf.c bff529ed47657098c55c9910b9c69b1b3b1a1353
+F src/printf.c 41c49dac366a3a411190001a8ab495fa8887974e
 F src/random.c cd4a67b3953b88019f8cd4ccd81394a8ddfaba50
 F src/resolve.c 89f9003e8316ee3a172795459efc2a0274e1d5a8
 F src/rowset.c 64655f1a627c9c212d9ab497899e7424a34222e0
 F src/select.c 91b62654caf8dfe292fb8882715e575d34ad3874
-F src/shell.c a02544af6697c5782d29ec3204616f35ed9e8458
-F src/sqlite.h.in 0693f95792b64cca4d1780c082d7b96fd32aa1c3
+F src/shell.c c8cd06e6b66250a3ea0149c4edec30de14f57b6f
+F src/sqlite.h.in fb8adf7852fb92e410de422b5569923327bf8a2c
 F src/sqlite3.rc fea433eb0a59f4c9393c8e6d76a6e2596b1fe0c0
-F src/sqlite3ext.h d936f797812c28b81b26ed18345baf8db28a21a5
-F src/sqliteInt.h 5a005fde923b3755fa3184e60028c582a8efe01d
+F src/sqlite3ext.h 886f5a34de171002ad46fae8c36a7d8051c190fc
+F src/sqliteInt.h a83b0cef30022c46a19e6ace1f668b7833935eed
 F src/sqliteLimit.h 164b0e6749d31e0daa1a4589a169d31c0dec7b3d
 F src/status.c bedc37ec1a6bb9399944024d63f4c769971955a9
 F src/table.c 2cd62736f845d82200acfa1287e33feb3c15d62e
 F src/tclsqlite.c e0eaf3a78eca2ef650abb67b6571cc86abcb5f87
-F src/test1.c 06bd01f7795bbef4aaf59d3b9fe5b3131a6ef642
+F src/test1.c 870fc648a48cb6d6808393174f7ebe82b8c840fa
 F src/test2.c 7355101c085304b90024f2261e056cdff13c6c35
 F src/test3.c 1c0e5d6f080b8e33c1ce8b3078e7013fdbcd560c
 F src/test4.c 9b32d22f5f150abe23c1830e2057c4037c45b3df
@@ -272,7 +273,7 @@ F src/test_pcache.c a5cd24730cb43c5b18629043314548c9169abb00
 F src/test_quota.c 30c64f0ef84734f2231a686df41ed882b0c59bc0
 F src/test_quota.h 8761e463b25e75ebc078bd67d70e39b9c817a0cb
 F src/test_rtree.c 1d764c352b5348bb2869ff5f54aff8eadcb96041
-F src/test_schema.c 8c06ef9ddb240c7a0fcd31bc221a6a2aade58bf0
+F src/test_schema.c cd12a2223c3a394f4d07bb93bdf6d344c5c121b6
 F src/test_server.c 2f99eb2837dfa06a4aacf24af24c6affdf66a84f
 F src/test_sqllog.c c1c1bbedbcaf82b93d83e4f9dd990e62476a680e
 F src/test_stat.c d1569c7a4839f13e80187e2c26b2ab4da2d03935
@@ -280,29 +281,29 @@ F src/test_superlock.c 2b97936ca127d13962c3605dbc9a4ef269c424cd
 F src/test_syscall.c 16dbe79fb320fadb5acd7a0a59f49e52ab2d2091
 F src/test_tclvar.c f4dc67d5f780707210d6bb0eb6016a431c04c7fa
 F src/test_thread.c 1e133a40b50e9c035b00174035b846e7eef481cb
-F src/test_vfs.c 8e6087a8b3dcc260282074b0efba14b76311120c
+F src/test_vfs.c 12d9931f65acde64961523b6f420ba7cd057fbd7
 F src/test_vfstrace.c 34b544e80ba7fb77be15395a609c669df2e660a2
 F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
-F src/tokenize.c 1e86210d3976717a19238ea7b047fac481fe8c12
+F src/tokenize.c e0e8fd3cb90a88451f6b6425726c84747b6b20d7
 F src/trigger.c 5c0ea9b8755e7c5e1a700f3e27ac4f8d92dd221e
 F src/update.c 19daebf6a0a67af5524913e93498d08388792128
 F src/utf.c 8d819e2e5104a430fc2005f018db14347c95a38f
 F src/util.c f566b5138099a2df8533b190d0dcc74b7dfbe0c9
-F src/vacuum.c ddf21cc9577c4cb459d08bee9863a78ec000c5bb
-F src/vdbe.c e1782e46404dd5aeb26d49e2180be6efcb6a2334
+F src/vacuum.c d9c5759f4c5a438bb43c2086f72c5d2edabc36c8
+F src/vdbe.c 7e1654d4ac01f017aad8088a1225e514b2aef5cf
 F src/vdbe.h 1223e2548e0970cf96f573ff6b99f804a36ad683
-F src/vdbeInt.h 1ca0f9ae9e9c28823647749edb767ea9ef2176d1
-F src/vdbeapi.c c45805f7acd2a07444b3d3b63853eb96545ec5f0
-F src/vdbeaux.c 2e82e249a0b72e9c2b63d16ec7801a966ff6a182
+F src/vdbeInt.h 11feb11eb49d8b312741011d30d91c9c50b59de0
+F src/vdbeapi.c bb28ee14bae43579b33d88e0d916a1657255a866
+F src/vdbeaux.c 84f5fb7cb2f62fd8b8a37b96ac929221cc77d317
 F src/vdbeblob.c 1268e0bcb8e21fa32520b0fc376e1bcdfaa0c642
 F src/vdbemem.c 833005f1cbbf447289f1973dba2a0c2228c7b8ab
 F src/vdbesort.c 3937e06b2a0e354500e17dc206ef4c35770a5017
-F src/vdbetrace.c 18cc59cb475e6115129bfde224367d13a35a7d13
+F src/vdbetrace.c e7ec40e1999ff3c6414424365d5941178966dcbc
 F src/vtab.c b05e5f1f4902461ba9f5fc49bb7eb7c3a0741a83
-F src/wal.c 436bfceb141b9423c45119e68e444358ee0ed35d
+F src/wal.c 7dc3966ef98b74422267e7e6e46e07ff6c6eb1b4
 F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
 F src/walker.c 4fa43583d0a84b48f93b1e88f11adf2065be4e73
-F src/where.c 9bcfcb4ec6a14dd0111bf287bee02be88d5709f9
+F src/where.c f5201334501cd23a39315cab479c0dcce0990701
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/aggnested.test 45c0201e28045ad38a530b5a144b73cd4aa2cfd6
@@ -335,7 +336,7 @@ F test/auth.test 4a4c3b034fff7750513520defa910f376c96ab49
 F test/auth2.test a2a371aa6df15f8b0c8109b33d3d7f0f73e4c9aa
 F test/auth3.test a4755e6a2a2fea547ffe63c874eb569e60a28eb5
 F test/autoinc.test bd30d372d00045252f6c2e41b5f41455e1975acf
-F test/autoindex1.test 314f12f87667861ac965c41587f9df82c42fff65
+F test/autoindex1.test d4dfe14001dfcb74cfbd7107f45a79fc1ab6183e
 F test/autovacuum.test 9f22a7733f39c56ef6a5665d10145ac25d8cb574
 F test/autovacuum_ioerr2.test 8a367b224183ad801e0e24dcb7d1501f45f244b4
 F test/avtrans.test 0252654f4295ddda3b2cce0e894812259e655a85
@@ -360,7 +361,7 @@ F test/boundary1.tcl 6421b2d920d8b09539503a8673339d32f7609eb1
 F test/boundary1.test 66d7f4706ccdb42d58eafdb081de07b0eb42d77b
 F test/boundary2.tcl e34ef4e930cf1083150d4d2c603e146bd3b76bcb
 F test/boundary2.test 9ae758d7dab7e882c8b6cc4a6a10278385bff8fa
-F test/boundary3.tcl 8901d6a503d0bf64251dd81cc74e5ad3add4b119
+F test/boundary3.tcl 23361e108a125dca9c4080c2feb884fe54d69243
 F test/boundary3.test 56ef82096b4329aca2be74fa1e2b0f762ea0eb45
 F test/boundary4.tcl 0bb4b1a94f4fc5ae59b79b9a2b7a140c405e2983
 F test/boundary4.test 89e02fa66397b8a325d5eb102b5806f961f8ec4b
@@ -371,7 +372,7 @@ F test/capi2.test e8b18cc61090b6e5e388f54d6b125d711d1b265a
 F test/capi3.test 56ab450125ead38846cbae7e5b6a216686c3cffa
 F test/capi3b.test efb2b9cfd127efa84433cd7a2d72ce0454ae0dc4
 F test/capi3c.test 93d24621c9ff84da9da060f30431e0453db1cdb0
-F test/capi3d.test 17b57ca28be3e37e14c2ba8f787d292d84b724a1
+F test/capi3d.test 6d0fc0a86d73f42dd19a7d8b7761ab9bc02277d0
 F test/capi3e.test ad90088b18b0367125ff2d4b5400153fd2f99aab
 F test/cast.test 4c275cbdc8202d6f9c54a3596701719868ac7dc3
 F test/check.test 2eb93611139a7dfaed3be80067c7dc5ceb5fb287
@@ -438,7 +439,7 @@ F test/e_createtable.test ddf3b2e4506e0813f46b69ccf55757c5570cc181
 F test/e_delete.test 89aa84d3d1bd284a0689ede04bce10226a5aeaa5
 F test/e_droptrigger.test afd5c4d27dec607f5997a66bf7e2498a082cb235
 F test/e_dropview.test 583411e470458c5d76148542cfb5a5fa84c8f93e
-F test/e_expr.test 5489424d3d9a452ac3701cdf4b680ae31a157894
+F test/e_expr.test 2a599f40f37ee9e853c4396c28ff13c2c50f6628
 F test/e_fkey.test 17cfb40002d165299681f39aac0cb5890c359935
 F test/e_fts3.test 5c02288842e4f941896fd44afdef564dd5fc1459
 F test/e_insert.test d5331cc95e101af2508159fc98b6801631659ffe
@@ -675,7 +676,7 @@ F test/manydb.test 28385ae2087967aa05c38624cec7d96ec74feb3e
 F test/mem5.test c6460fba403c5703141348cd90de1c294188c68f
 F test/memdb.test db5260330676de007be8530d6ecc7c9ab2b06ad3
 F test/memleak.test 10b9c6c57e19fc68c32941495e9ba1c50123f6e2
-F test/memsubsys1.test a8f9e37567453a5d1d9d37ec102d4d88ab6be33f
+F test/memsubsys1.test f97cfd0b30e85c2f1ed16d642e7ac58006be84b2
 F test/memsubsys2.test 3a1c1a9de48e5726faa85108b02459fae8cb9ee9
 F test/minmax.test 42fbad0e81afaa6e0de41c960329f2b2c3526efd
 F test/minmax2.test b44bae787fc7b227597b01b0ca5575c7cb54d3bc
@@ -691,7 +692,8 @@ F test/misc7.test 50c02c35ef7924c246eb3d8d71dfbf90ba352f8f
 F test/misuse.test ba4fb5d1a6101d1c171ea38b3c613d0661c83054
 F test/mmap1.test 93d167b328255cbe6679fe1e1a23be1b1197d07b
 F test/mmap2.test 9d6dd9ddb4ad2379f29cc78f38ce1e63ed418022
-F test/mmap3.test 01728252af6f9bcf708169d7b794b7597c69ac44
+F test/mmap3.test c92273e16eb8d23c1d55c9815b446bb72ef0512e
+F test/mmapfault.test 97507ee06172df99057dbf1c40294eabd82cbb13
 F test/multiplex.test e08cc7177bd6d85990ee1d71100bb6c684c02256
 F test/multiplex2.test 580ca5817c7edbe4cc68fa150609c9473393003a
 F test/multiplex3.test d228f59eac91839a977eac19f21d053f03e4d101
@@ -719,9 +721,9 @@ F test/pagerfault2.test caf4c7facb914fd3b03a17b31ae2b180c8d6ca1f
 F test/pagerfault3.test 1003fcda009bf48a8e22a516e193b6ef0dd1bbd8
 F test/pageropt.test 6b8f6a123a5572c195ad4ae40f2987007923bbd6
 F test/pagesize.test 1dd51367e752e742f58e861e65ed7390603827a0
-F test/pcache.test 065aa286e722ab24f2e51792c1f093bf60656b16
+F test/pcache.test b09104b03160aca0d968d99e8cd2c5b1921a993d
 F test/pcache2.test a83efe2dec0d392f814bfc998def1d1833942025
-F test/percentile.test 4614301e38398df7fdd5f28f4ed8f272b328251b
+F test/percentile.test b98fc868d71eb5619d42a1702e9ab91718cbed54
 F test/permutations.test 742b8005bb3c782797a20beccdbe213ef52531fb
 F test/pragma.test 5e7de6c32a5d764f09437d2025f07e4917b9e178
 F test/pragma2.test 3a55f82b954242c642f8342b17dffc8b47472947
@@ -767,7 +769,7 @@ F test/select5.test e758b8ef94f69b111df4cb819008856655dcd535
 F test/select6.test e76bd10a56988f15726c097a5d5a7966fe82d3b2
 F test/select7.test dad6f00f0d49728a879d6eb6451d4752db0b0abe
 F test/select8.test 391de11bdd52339c30580dabbbbe97e3e9a3c79d
-F test/select9.test c0ca3cd87a8ebb04de2cb1402c77df55d911a0ea
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 F test/selectA.test 99cf21df033b93033ea4f34aba14a500f48f04fe
 F test/selectB.test 954e4e49cf1f896d61794e440669e03a27ceea25
 F test/selectC.test 871fb55d884d3de5943c4057ebd22c2459e71977
@@ -786,11 +788,11 @@ F test/shared9.test 5f2a8f79b4d6c7d107a01ffa1ed05ae7e6333e21
 F test/sharedA.test 0cdf1a76dfa00e6beee66af5b534b1e8df2720f5
 F test/shared_err.test 0079c05c97d88cfa03989b7c20a8b266983087aa
 F test/sharedlock.test 927a4b6da11978c82b857dbdb20a932aad732123
-F test/shell1.test 4a2f57952719972c6f862134463f8712e953c038
+F test/shell1.test 928547277d385038c696428e9d791cbbad098974
 F test/shell2.test 037d6ad16e873354195d30bb2dc4b5321788154a
 F test/shell3.test 9196c42772d575685e722c92b4b39053c6ebba59
 F test/shell4.test aa4eef8118b412d1a01477a53426ece169ea86a9
-F test/shell5.test fa2188bbb13fe2d183fd04a5f7b512650c35ef5d
+F test/shell5.test 946e620a41b64f90d45dcf91c36e8d408d435cfd
 F test/shortread1.test bb591ef20f0fd9ed26d0d12e80eee6d7ac8897a3
 F test/shrink.test 8c70f62b6e8eb4d54533de6d65bd06b1b9a17868
 F test/sidedelete.test f0ad71abe6233e3b153100f3b8d679b19a488329
@@ -805,7 +807,7 @@ F test/speed3.test d32043614c08c53eafdc80f33191d5bd9b920523
 F test/speed4.test abc0ad3399dcf9703abed2fff8705e4f8e416715
 F test/speed4p.explain 6b5f104ebeb34a038b2f714150f51d01143e59aa
 F test/speed4p.test 0e51908951677de5a969b723e03a27a1c45db38b
-F test/spellfix.test bea537caf587df30d430c2c6a8fe9f64b8712834
+F test/spellfix.test 38246facf7d9d7eeb8a57d7497cf7ce73ce5785d
 F test/sqllimits1.test b1aae27cc98eceb845e7f7adf918561256e31298
 F test/stat.test be8d477306006ec696bc86757cfb34bec79447ce
 F test/stmt.test 25d64e3dbf9a3ce89558667d7f39d966fe2a71b9
@@ -861,6 +863,7 @@ F test/tkt-7bbfb7d442.test 7b2cd79c7a17ae6750e75ec1a7846712a69c9d18
 F test/tkt-80ba201079.test 105a721e6aad0ae3c5946d7615d1e4d03f6145b8
 F test/tkt-80e031a00f.test 9a154173461a4dbe2de49cda73963e04842d52f7
 F test/tkt-8454a207b9.test c583a9f814a82a2b5ba95207f55001c9f0cd816c
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 F test/tkt-91e2e8ba6f.test 08c4f94ae07696b05c9b822da0b4e5337a2f54c5
 F test/tkt-94c04eaadb.test fa9c71192f7e2ea2d51bf078bc34e8da6088bf71
 F test/tkt-9d68c883.test 458f7d82a523d7644b54b497c986378a7d8c8b67
@@ -971,7 +974,7 @@ F test/trace2.test e7a988fdd982cdec62f1f1f34b0360e6476d01a0
 F test/trans.test 6e1b4c6a42dba31bd65f8fa5e61a2708e08ddde6
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 F test/trans3.test 373ac5183cc56be69f48ae44090e7f672939f732
-F test/transitive1.test d04aa9023e425d6f2d4aa61dd81ee9e102f89062
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 F test/trigger1.test dc47573ac79ffe0ee3eecaa517d70d8dacbccd03
 F test/trigger2.test 834187beafd1db383af0c659cfa49b0576832816
 F test/trigger3.test aa640bb2bbb03edd5ff69c055117ea088f121945
@@ -1025,7 +1028,7 @@ F test/wal2.test d4b470f13c87f6d8268b004380afa04c3c67cb90
 F test/wal3.test b22eb662bcbc148c5f6d956eaf94b047f7afe9c0
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 F test/wal5.test 8f888b50f66b78821e61ed0e233ded5de378224b
-F test/wal6.test 2e3bc767d9c2ce35c47106148d43fcbd072a93b3
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 F test/wal7.test 2ae8f427d240099cc4b2dfef63cff44e2a68a1bd
 F test/wal8.test 75c42e1bc4545c277fed212f8fc9b7723cd02216
 F test/wal9.test 378e76a9ad09cd9bee06c172ad3547b0129a6750
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 F test/walslow.test e7be6d9888f83aa5d3d3c7c08aa9b5c28b93609a
 F test/walthread.test de8dbaf6d9e41481c460ba31ca61e163d7348f8e
 F test/where.test da54153a4c1571ea1b95659e5bec8119edf786aa
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-F test/where3.test 157071521ceabc06bfd4d37106e4270a8956364d
+F test/where2.test d712de0ea9a2c3de7b34b0b1e75172556fef5b24
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 F test/where4.test e9b9e2f2f98f00379e6031db6a6fca29bae782a2
 F test/where5.test fdf66f96d29a064b63eb543e28da4dfdccd81ad2
 F test/where6.test 5da5a98cec820d488e82708301b96cb8c18a258b
@@ -1062,6 +1065,7 @@ F test/whereD.test 6c2feb79ef1f68381b07f39017fe5f9b96da8d62
 F test/whereE.test b3a055eef928c992b0a33198a7b8dc10eea5ad2f
 F test/whereF.test 136a7301512d72a08a272806c8767066311b7bc1
 F test/wherelimit.test 5e9fd41e79bb2b2d588ed999d641d9c965619b31
+F test/wild001.test bca33f499866f04c24510d74baf1e578d4e44b1c
 F test/win32lock.test 7a6bd73a5dcdee39b5bb93e92395e1773a194361
 F test/zeroblob.test caaecfb4f908f7bc086ed238668049f96774d688
 F test/zerodamage.test 209d7ed441f44cc5299e4ebffbef06fd5aabfefd
@@ -1111,7 +1115,7 @@ F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/wherecosttest.c f407dc4c79786982a475261866a161cd007947ae
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 1d44e5d3c2b1dc958442f9114a960b256e002ed3
-R 28f75ac347bd281672cb0a8d27d3f6b3
-U dan
-Z 01296a7a6fdc241a613ea24758428ad2
+P 1452defb8cfcc489230314dd1e0425feba46c49d 1e39f85077f1f2b96c3a656c5b6334bafb005908
+R 996effd12b4e262519df6f6e538dae74
+U drh
+Z 08707dac307041af534ddfd35863fca1
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-1452defb8cfcc489230314dd1e0425feba46c49d
+af3ca4c6e557e6bc92584586b5a97d9be41b0b82
--- a/mkextw.sh
+++ b/mkextw.sh
@@ -11,7 +11,7 @@ CMD="$CC -c fts2amal.c"
 echo $CMD
 $CMD
 echo 'EXPORTS' >fts2.def
-echo 'sqlite3_extension_init' >>fts2.def
+echo 'sqlite3_fts2_init' >>fts2.def
 i386-mingw32msvc-dllwrap \
     --def fts2.def -v --export-all \
     --driver-name i386-mingw32msvc-gcc \
--- a/src/btree.c
+++ b/src/btree.c
@@ -3273,12 +3273,13 @@ int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
 */
 static void btreeEndTransaction(Btree *p){
  BtShared *pBt = p->pBt;
+  sqlite3 *db = p->db;
  assert( sqlite3BtreeHoldsMutex(p) );

 #ifndef SQLITE_OMIT_AUTOVACUUM
  pBt->bDoTruncate = 0;
 #endif
-  if( p->inTrans>TRANS_NONE && p->db->activeVdbeCnt>1 ){
+  if( p->inTrans>TRANS_NONE && db->nVdbeRead>1 ){
    /* If there are other active statements that belong to this database
    ** handle, downgrade to a read-only transaction. The other statements
    ** may still be reading from the database.  */
--- a/src/main.c
+++ b/src/main.c
@@ -1065,6 +1065,7 @@ const char *sqlite3ErrName(int rc){
      case SQLITE_ABORT_ROLLBACK:     zName = "SQLITE_ABORT_ROLLBACK";    break;
      case SQLITE_BUSY:               zName = "SQLITE_BUSY";              break;
      case SQLITE_BUSY_RECOVERY:      zName = "SQLITE_BUSY_RECOVERY";     break;
+      case SQLITE_BUSY_SNAPSHOT:      zName = "SQLITE_BUSY_SNAPSHOT";     break;
      case SQLITE_LOCKED:             zName = "SQLITE_LOCKED";            break;
      case SQLITE_LOCKED_SHAREDCACHE: zName = "SQLITE_LOCKED_SHAREDCACHE";break;
      case SQLITE_NOMEM:              zName = "SQLITE_NOMEM";             break;
@@ -1138,6 +1139,7 @@ const char *sqlite3ErrName(int rc){
      case SQLITE_NOTICE_RECOVER_ROLLBACK:
                                zName = "SQLITE_NOTICE_RECOVER_ROLLBACK"; break;
      case SQLITE_WARNING:            zName = "SQLITE_WARNING";           break;
+      case SQLITE_WARNING_AUTOINDEX:  zName = "SQLITE_WARNING_AUTOINDEX"; break;
      case SQLITE_DONE:               zName = "SQLITE_DONE";              break;
    }
  }
@@ -1396,7 +1398,7 @@ int sqlite3CreateFunc(
  */
  p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 0);
  if( p && p->iPrefEnc==enc && p->nArg==nArg ){
-    if( db->activeVdbeCnt ){
+    if( db->nVdbeActive ){
      sqlite3Error(db, SQLITE_BUSY, 
        "unable to delete/modify user-function due to active statements");
      assert( !db->mallocFailed );
@@ -1998,7 +2000,7 @@ static int createCollation(
  */
  pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 0);
  if( pColl && pColl->xCmp ){
-    if( db->activeVdbeCnt ){
+    if( db->nVdbeActive ){
      sqlite3Error(db, SQLITE_BUSY, 
        "unable to delete/modify collation sequence due to active statements");
      return SQLITE_BUSY;
@@ -2473,7 +2475,10 @@ static int openDatabase(
  db->nextAutovac = -1;
  db->szMmap = sqlite3GlobalConfig.szMmap;
  db->nextPagesize = 0;
-  db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex | SQLITE_EnableTrigger
+  db->flags |= SQLITE_ShortColNames | SQLITE_EnableTrigger
+#if !defined(SQLITE_DEAULT_AUTOMATIC_INDEX) || SQLITE_DEFAULT_AUTOMATIC_INDEX
+                 | SQLITE_AutoIndex
+#endif
 #if SQLITE_DEFAULT_FILE_FORMAT<4
                 | SQLITE_LegacyFileFmt
 #endif
--- a/src/pager.c
+++ b/src/pager.c
@@ -1812,6 +1812,7 @@ static void pager_unlock(Pager *pPager){
    pPager->changeCountDone = pPager->tempFile;
    pPager->eState = PAGER_OPEN;
    pPager->errCode = SQLITE_OK;
+    if( USEFETCH(pPager) ) sqlite3OsUnfetch(pPager->fd, 0, 0);
  }

  pPager->journalOff = 0;
@@ -3378,10 +3379,10 @@ void sqlite3PagerSetCachesize(Pager *pPager, int mxPage){
 static void pagerFixMaplimit(Pager *pPager){
 #if SQLITE_MAX_MMAP_SIZE>0
  sqlite3_file *fd = pPager->fd;
-  if( isOpen(fd) ){
+  if( isOpen(fd) && fd->pMethods->iVersion>=3 ){
    sqlite3_int64 sz;
-    pPager->bUseFetch = (fd->pMethods->iVersion>=3) && pPager->szMmap>0;
    sz = pPager->szMmap;
+    pPager->bUseFetch = (sz>0);
    sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_MMAP_SIZE, &sz);
  }
 #endif
--- a/src/printf.c
+++ b/src/printf.c
@@ -468,8 +468,8 @@ void sqlite3VXPrintf(
        }else{
          e2 = exp;
        }
-        if( e2+precision+width > etBUFSIZE - 15 ){
-          bufpt = zExtra = sqlite3Malloc( e2+precision+width+15 );
+        if( MAX(e2,0)+precision+width > etBUFSIZE - 15 ){
+          bufpt = zExtra = sqlite3Malloc( MAX(e2,0)+precision+width+15 );
          if( bufpt==0 ){
            pAccum->mallocFailed = 1;
            return;
--- a/src/shell.c
+++ b/src/shell.c
@@ -67,7 +67,7 @@
 #undef popen
 #define popen(a,b) _popen((a),(b))
 #undef pclose
-#define pclose(x) _pclose(x)
+#define pclose _pclose
 #else
 /* Make sure isatty() has a prototype.
 */
@@ -1492,6 +1492,7 @@ static void open_db(struct callback_data *p){
 **    \t    -> tab
 **    \n    -> newline
 **    \r    -> carriage return
+**    \"    -> "
 **    \NNN  -> ascii character NNN in octal
 **    \\    -> backslash
 */
@@ -1507,6 +1508,8 @@ static void resolve_backslashes(char *z){
        c = '\t';
      }else if( c=='r' ){
        c = '\r';
+      }else if( c=='\\' ){
+        c = '\\';
      }else if( c>='0' && c<='7' ){
        c -= '0';
        if( z[i+1]>='0' && z[i+1]<='7' ){
@@ -1650,6 +1653,107 @@ static void test_breakpoint(void){
  nCall++;
 }

+/*
+** An object used to read a CSV file
+*/
+typedef struct CSVReader CSVReader;
+struct CSVReader {
+  const char *zFile;  /* Name of the input file */
+  FILE *in;           /* Read the CSV text from this input stream */
+  char *z;            /* Accumulated text for a field */
+  int n;              /* Number of bytes in z */
+  int nAlloc;         /* Space allocated for z[] */
+  int nLine;          /* Current line number */
+  int cTerm;          /* Character that terminated the most recent field */
+  int cSeparator;     /* The separator character.  (Usually ",") */
+};
+
+/* Append a single byte to z[] */
+static void csv_append_char(CSVReader *p, int c){
+  if( p->n+1>=p->nAlloc ){
+    p->nAlloc += p->nAlloc + 100;
+    p->z = sqlite3_realloc(p->z, p->nAlloc);
+    if( p->z==0 ){
+      fprintf(stderr, "out of memory\n");
+      exit(1);
+    }
+  }
+  p->z[p->n++] = (char)c;
+}
+
+/* Read a single field of CSV text.  Compatible with rfc4180 and extended
+** with the option of having a separator other than ",".
+**
+**   +  Input comes from p->in.
+**   +  Store results in p->z of length p->n.  Space to hold p->z comes
+**      from sqlite3_malloc().
+**   +  Use p->cSep as the separator.  The default is ",".
+**   +  Keep track of the line number in p->nLine.
+**   +  Store the character that terminates the field in p->cTerm.  Store
+**      EOF on end-of-file.
+**   +  Report syntax errors on stderr
+*/
+static char *csv_read_one_field(CSVReader *p){
+  int c, pc;
+  int cSep = p->cSeparator;
+  p->n = 0;
+  c = fgetc(p->in);
+  if( c==EOF || seenInterrupt ){
+    p->cTerm = EOF;
+    return 0;
+  }
+  if( c=='"' ){
+    int startLine = p->nLine;
+    int cQuote = c;
+    pc = 0;
+    while( 1 ){
+      c = fgetc(p->in);
+      if( c=='\n' ) p->nLine++;
+      if( c==cQuote ){
+        if( pc==cQuote ){
+          pc = 0;
+          continue;
+        }
+      }
+      if( (c==cSep && pc==cQuote)
+       || (c=='\n' && pc==cQuote)
+       || (c=='\n' && pc=='\r' && p->n>2 && p->z[p->n-2]==cQuote)
+       || (c==EOF && pc==cQuote)
+      ){
+        do{ p->n--; }while( p->z[p->n]!=cQuote );
+        p->z[p->n] = 0;
+        p->cTerm = c;
+        break;
+      }
+      if( pc==cQuote && c!='\r' ){
+        fprintf(stderr, "%s:%d: unescaped %c character\n",
+                p->zFile, p->nLine, cQuote);
+      }
+      if( c==EOF ){
+        fprintf(stderr, "%s:%d: unterminated %c-quoted field\n",
+                p->zFile, startLine, cQuote);
+        p->z[p->n] = 0;
+        p->cTerm = EOF;
+        break;
+      }
+      csv_append_char(p, c);
+      pc = c;
+    }
+  }else{
+    while( c!=EOF && c!=cSep && c!='\n' ){
+      csv_append_char(p, c);
+      c = fgetc(p->in);
+    }
+    if( c=='\n' ){
+      p->nLine++;
+      if( p->n>1 && p->z[p->n-1]=='\r' ) p->n--;
+    }
+    p->z[p->n] = 0;
+    p->cTerm = c;
+  }
+  return p->z;
+}
+
 /*
 ** If an input line begins with "." then invoke this routine to
 ** process that line.
@@ -1671,7 +1775,10 @@ static int do_meta_command(char *zLine, struct callback_data *p){
    if( zLine[i]=='\'' || zLine[i]=='"' ){
      int delim = zLine[i++];
      azArg[nArg++] = &zLine[i];
-      while( zLine[i] && zLine[i]!=delim ){ i++; }
+      while( zLine[i] && zLine[i]!=delim ){ 
+        if( zLine[i]=='\\' && delim=='"' && zLine[i+1]!=0 ) i++;
+        i++; 
+      }
      if( zLine[i]==delim ){
        zLine[i++] = 0;
      }
@@ -1888,48 +1995,97 @@ static int do_meta_command(char *zLine, struct callback_data *p){

  if( c=='i' && strncmp(azArg[0], "import", n)==0 && nArg==3 ){
    char *zTable = azArg[2];    /* Insert data into this table */
-    char *zFile = azArg[1];     /* The file from which to extract data */
+    char *zFile = azArg[1];     /* 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 */
    int i, j;                   /* Loop counters */
    int nSep;                   /* Number of bytes in p->separator[] */
    char *zSql;                 /* An SQL statement */
-    char *zLine;                /* A single line of input from the file */
-    char **azCol;               /* zLine[] broken up into columns */
-    char *zCommit;              /* How to commit changes */   
-    FILE *in;                   /* The input file */
-    int lineno = 0;             /* Line number of input file */
+    CSVReader sCsv;             /* Reader context */
+    int (*xCloser)(FILE*);      /* Procedure to close th3 connection */

+    seenInterrupt = 0;
+    memset(&sCsv, 0, sizeof(sCsv));
    open_db(p);
    nSep = strlen30(p->separator);
    if( nSep==0 ){
      fprintf(stderr, "Error: non-null separator required for import\n");
      return 1;
    }
+    if( nSep>1 ){
+      fprintf(stderr, "Error: multi-character separators not allowed"
+                      " for import\n");
+      return 1;
+    }
+    sCsv.zFile = zFile;
+    sCsv.nLine = 1;
+    if( sCsv.zFile[0]=='|' ){
+      sCsv.in = popen(sCsv.zFile+1, "r");
+      sCsv.zFile = "<pipe>";
+      xCloser = pclose;
+    }else{
+      sCsv.in = fopen(sCsv.zFile, "rb");
+      xCloser = fclose;
+    }
+    if( sCsv.in==0 ){
+      fprintf(stderr, "Error: cannot open \"%s\"\n", zFile);
+      return 1;
+    }
+    sCsv.cSeparator = p->separator[0];
    zSql = sqlite3_mprintf("SELECT * FROM %s", zTable);
    if( zSql==0 ){
      fprintf(stderr, "Error: out of memory\n");
+      xCloser(sCsv.in);
      return 1;
    }
    nByte = strlen30(zSql);
    rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0);
+    if( rc && sqlite3_strglob("no such table: *", sqlite3_errmsg(db))==0 ){
+      char *zCreate = sqlite3_mprintf("CREATE TABLE %s", zTable);
+      char cSep = '(';
+      while( csv_read_one_field(&sCsv) ){
+        zCreate = sqlite3_mprintf("%z%c\n  \"%s\" TEXT", zCreate, cSep, sCsv.z);
+        cSep = ',';
+        if( sCsv.cTerm!=sCsv.cSeparator ) break;
+      }
+      if( cSep=='(' ){
+        sqlite3_free(zCreate);
+        sqlite3_free(sCsv.z);
+        xCloser(sCsv.in);
+        fprintf(stderr,"%s: empty file\n", sCsv.zFile);
+        return 1;
+      }
+      zCreate = sqlite3_mprintf("%z\n)", zCreate);
+      rc = sqlite3_exec(p->db, zCreate, 0, 0, 0);
+      sqlite3_free(zCreate);
+      if( rc ){
+        fprintf(stderr, "CREATE TABLE %s(...) failed: %s\n", zTable,
+                sqlite3_errmsg(db));
+        sqlite3_free(sCsv.z);
+        xCloser(sCsv.in);
+        return 1;
+      }
+      rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0);
+    }
    sqlite3_free(zSql);
    if( rc ){
      if (pStmt) sqlite3_finalize(pStmt);
      fprintf(stderr,"Error: %s\n", sqlite3_errmsg(db));
+      xCloser(sCsv.in);
      return 1;
    }
    nCol = sqlite3_column_count(pStmt);
    sqlite3_finalize(pStmt);
    pStmt = 0;
    if( nCol==0 ) return 0; /* no columns, no error */
-    zSql = malloc( nByte + 20 + nCol*2 );
+    zSql = sqlite3_malloc( nByte*2 + 20 + nCol*2 );
    if( zSql==0 ){
      fprintf(stderr, "Error: out of memory\n");
+      xCloser(sCsv.in);
      return 1;
    }
-    sqlite3_snprintf(nByte+20, zSql, "INSERT INTO %s VALUES(?", zTable);
+    sqlite3_snprintf(nByte+20, zSql, "INSERT INTO \"%w\" VALUES(?", zTable);
    j = strlen30(zSql);
    for(i=1; i<nCol; i++){
      zSql[j++] = ',';
@@ -1938,79 +2094,50 @@ static int do_meta_command(char *zLine, struct callback_data *p){
    zSql[j++] = ')';
    zSql[j] = 0;
    rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0);
-    free(zSql);
+    sqlite3_free(zSql);
    if( rc ){
      fprintf(stderr, "Error: %s\n", sqlite3_errmsg(db));
      if (pStmt) sqlite3_finalize(pStmt);
+      xCloser(sCsv.in);
      return 1;
    }
-    in = fopen(zFile, "rb");
-    if( in==0 ){
-      fprintf(stderr, "Error: cannot open \"%s\"\n", zFile);
-      sqlite3_finalize(pStmt);
-      return 1;
-    }
-    azCol = malloc( sizeof(azCol[0])*(nCol+1) );
-    if( azCol==0 ){
-      fprintf(stderr, "Error: out of memory\n");
-      fclose(in);
-      sqlite3_finalize(pStmt);
-      return 1;
-    }
-    sqlite3_exec(p->db, "BEGIN", 0, 0, 0);
-    zCommit = "COMMIT";
-    while( (zLine = local_getline(0, in, 1))!=0 ){
-      char *z, c;
-      int inQuote = 0;
-      lineno++;
-      azCol[0] = zLine;
-      for(i=0, z=zLine; (c = *z)!=0; z++){
-        if( c=='"' ) inQuote = !inQuote;
-        if( c=='\n' ) lineno++;
-        if( !inQuote && c==p->separator[0] && strncmp(z,p->separator,nSep)==0 ){
-          *z = 0;
-          i++;
-          if( i<nCol ){
-            azCol[i] = &z[nSep];
-            z += nSep-1;
-          }
-        }
-      } /* end for */
-      *z = 0;
-      if( i+1!=nCol ){
-        fprintf(stderr,
-                "Error: %s line %d: expected %d columns of data but found %d\n",
-                zFile, lineno, nCol, i+1);
-        zCommit = "ROLLBACK";
-        free(zLine);
-        rc = 1;
-        break; /* from while */
-      }
+    do{
+      int startLine = sCsv.nLine;
      for(i=0; i<nCol; i++){
-        if( azCol[i][0]=='"' ){
-          int k;
-          for(z=azCol[i], j=1, k=0; z[j]; j++){
-            if( z[j]=='"' ){ j++; if( z[j]==0 ) break; }
-            z[k++] = z[j];
-          }
-          z[k] = 0;
+        char *z = csv_read_one_field(&sCsv);
+        if( z==0 && i==0 ) break;
+        sqlite3_bind_text(pStmt, i+1, z, -1, SQLITE_TRANSIENT);
+        if( i<nCol-1 && sCsv.cTerm!=sCsv.cSeparator ){
+          fprintf(stderr, "%s:%d: expected %d columns but found %d - "
+                          "filling the rest with NULL\n",
+                          sCsv.zFile, startLine, nCol, i+1);
+          i++;
+          while( i<nCol ){ sqlite3_bind_null(pStmt, i); i++; }
        }
-        sqlite3_bind_text(pStmt, i+1, azCol[i], -1, SQLITE_STATIC);
      }
-      sqlite3_step(pStmt);
-      rc = sqlite3_reset(pStmt);
-      free(zLine);
-      if( rc!=SQLITE_OK ){
-        fprintf(stderr,"Error: %s\n", sqlite3_errmsg(db));
-        zCommit = "ROLLBACK";
-        rc = 1;
-        break; /* from while */
+      if( sCsv.cTerm==sCsv.cSeparator ){
+        do{
+          csv_read_one_field(&sCsv);
+          i++;
+        }while( sCsv.cTerm==sCsv.cSeparator );
+        fprintf(stderr, "%s:%d: expected %d columns but found %d - "
+                        "extras ignored\n",
+                        sCsv.zFile, startLine, nCol, i);
      }
-    } /* end while */
-    free(azCol);
-    fclose(in);
+      if( i>=nCol ){
+        sqlite3_step(pStmt);
+        rc = sqlite3_reset(pStmt);
+        if( rc!=SQLITE_OK ){
+          fprintf(stderr, "%s:%d: INSERT failed: %s\n", sCsv.zFile, startLine,
+                  sqlite3_errmsg(db));
+        }
+      }
+    }while( sCsv.cTerm!=EOF );
+
+    xCloser(sCsv.in);
+    sqlite3_free(sCsv.z);
    sqlite3_finalize(pStmt);
-    sqlite3_exec(p->db, zCommit, 0, 0, 0);
+    sqlite3_exec(p->db, "COMMIT", 0, 0, 0);
  }else

  if( c=='i' && strncmp(azArg[0], "indices", n)==0 && nArg<3 ){
@@ -2332,6 +2459,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){
    }
  }else

+#ifdef SQLITE_DEBUG
  /* Undocumented commands for internal testing.  Subject to change
  ** without notice. */
  if( c=='s' && n>=10 && strncmp(azArg[0], "selftest-", 9)==0 ){
@@ -2345,11 +2473,14 @@ static int do_meta_command(char *zLine, struct callback_data *p){
    if( strncmp(azArg[0]+9, "integer", n-9)==0 ){
      int i; sqlite3_int64 v;
      for(i=1; i<nArg; i++){
+        char zBuf[200];
        v = integerValue(azArg[i]);
-        fprintf(p->out, "%s: %lld 0x%llx\n", azArg[i], v, v);
+        sqlite3_snprintf(sizeof(zBuf), zBuf, "%s: %lld 0x%llx\n", azArg[i], v, v);
+        fprintf(p->out, "%s", zBuf);
      }
    }
  }else
+#endif

  if( c=='s' && strncmp(azArg[0], "separator", n)==0 && nArg==2 ){
    sqlite3_snprintf(sizeof(p->separator), p->separator,
--- a/src/sqlite.h.in
+++ b/src/sqlite.h.in
@@ -475,6 +475,7 @@ int sqlite3_exec(
 #define SQLITE_IOERR_MMAP              (SQLITE_IOERR | (24<<8))
 #define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED |  (1<<8))
 #define SQLITE_BUSY_RECOVERY           (SQLITE_BUSY   |  (1<<8))
+#define SQLITE_BUSY_SNAPSHOT           (SQLITE_BUSY   |  (2<<8))
 #define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
 #define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
 #define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
@@ -494,6 +495,7 @@ int sqlite3_exec(
 #define SQLITE_CONSTRAINT_VTAB         (SQLITE_CONSTRAINT | (9<<8))
 #define SQLITE_NOTICE_RECOVER_WAL      (SQLITE_NOTICE | (1<<8))
 #define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8))
+#define SQLITE_WARNING_AUTOINDEX       (SQLITE_WARNING | (1<<8))

 /*
 ** CAPI3REF: Flags For File Open Operations
--- a/src/sqlite3ext.h
+++ b/src/sqlite3ext.h
@@ -474,11 +474,14 @@ struct sqlite3_api_routines {
  ** extension */
 # define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
 # define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;
+# define SQLITE_EXTENSION_INIT3     \
+    extern const sqlite3_api_routines *sqlite3_api;
 #else
  /* This case when the file is being statically linked into the 
  ** application */
 # define SQLITE_EXTENSION_INIT1     /*no-op*/
 # define SQLITE_EXTENSION_INIT2(v)  (void)v; /* unused parameter */
+# define SQLITE_EXTENSION_INIT3     /*no-op*/
 #endif

 #endif /* _SQLITE3EXT_H_ */
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -898,9 +898,10 @@ struct sqlite3 {
    u8 busy;                    /* TRUE if currently initializing */
    u8 orphanTrigger;           /* Last statement is orphaned TEMP trigger */
  } init;
-  int activeVdbeCnt;            /* Number of VDBEs currently executing */
-  int writeVdbeCnt;             /* Number of active VDBEs that are writing */
-  int vdbeExecCnt;              /* Number of nested calls to VdbeExec() */
+  int nVdbeActive;              /* Number of VDBEs currently running */
+  int nVdbeRead;                /* Number of active VDBEs that read or write */
+  int nVdbeWrite;               /* Number of active VDBEs that read and write */
+  int nVdbeExec;                /* Number of nested calls to VdbeExec() */
  int nExtension;               /* Number of loaded extensions */
  void **aExtension;            /* Array of shared library handles */
  void (*xTrace)(void*,const char*);        /* Trace function */
@@ -1035,6 +1036,7 @@ struct sqlite3 {
 #define SQLITE_SubqCoroutine  0x0100   /* Evaluate subqueries as coroutines */
 #define SQLITE_Transitive     0x0200   /* Transitive constraints */
 #define SQLITE_OmitNoopJoin   0x0400   /* Omit unused tables in joins */
+#define SQLITE_Stat3          0x0800   /* Use the SQLITE_STAT3 table */
 #define SQLITE_AllOpts        0xffff   /* All optimizations */

 /*
--- a/src/test1.c
+++ b/src/test1.c
@@ -5959,15 +5959,20 @@ static int optimization_control(
    const char *zOptName;
    int mask;
  } aOpt[] = {
-    { "all",              SQLITE_AllOpts        },
-    { "query-flattener",  SQLITE_QueryFlattener },
-    { "column-cache",     SQLITE_ColumnCache    },
-    { "groupby-order",    SQLITE_GroupByOrder   },
-    { "factor-constants", SQLITE_FactorOutConst },
-    { "real-as-int",      SQLITE_IdxRealAsInt   },
-    { "distinct-opt",     SQLITE_DistinctOpt    },
-    { "cover-idx-scan",   SQLITE_CoverIdxScan   },
-    { "order-by-idx-join",SQLITE_OrderByIdxJoin },
+    { "all",                 SQLITE_AllOpts        },
+    { "none",                0                     },
+    { "query-flattener",     SQLITE_QueryFlattener },
+    { "column-cache",        SQLITE_ColumnCache    },
+    { "groupby-order",       SQLITE_GroupByOrder   },
+    { "factor-constants",    SQLITE_FactorOutConst },
+    { "real-as-int",         SQLITE_IdxRealAsInt   },
+    { "distinct-opt",        SQLITE_DistinctOpt    },
+    { "cover-idx-scan",      SQLITE_CoverIdxScan   },
+    { "order-by-idx-join",   SQLITE_OrderByIdxJoin },
+    { "transitive",          SQLITE_Transitive     },
+    { "subquery-coroutine",  SQLITE_SubqCoroutine  },
+    { "omit-noop-join",      SQLITE_OmitNoopJoin   },
+    { "stat3",               SQLITE_Stat3          },
  };

  if( objc!=4 ){
@@ -5988,7 +5993,7 @@ static int optimization_control(
    Tcl_AppendResult(interp, "unknown optimization - should be one of:",
                     (char*)0);
    for(i=0; i<sizeof(aOpt)/sizeof(aOpt[0]); i++){
-      Tcl_AppendResult(interp, " ", aOpt[i].zOptName);
+      Tcl_AppendResult(interp, " ", aOpt[i].zOptName, (char*)0);
    }
    return TCL_ERROR;
  }
--- a/src/test_schema.c
+++ b/src/test_schema.c
@@ -344,7 +344,10 @@ int Sqlitetestschema_Init(Tcl_Interp *interp){
 /*
 ** Extension load function.
 */
-int sqlite3_extension_init(
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_schema_init(
  sqlite3 *db, 
  char **pzErrMsg, 
  const sqlite3_api_routines *pApi
--- a/src/test_vfs.c
+++ b/src/test_vfs.c
@@ -190,8 +190,11 @@ static int tvfsShmMap(sqlite3_file*,int,int,int, void volatile **);
 static void tvfsShmBarrier(sqlite3_file*);
 static int tvfsShmUnmap(sqlite3_file*, int);

+static int tvfsFetch(sqlite3_file*, sqlite3_int64, int, void**);
+static int tvfsUnfetch(sqlite3_file*, sqlite3_int64, void*);
+
 static sqlite3_io_methods tvfs_io_methods = {
-  2,                              /* iVersion */
+  3,                              /* iVersion */
  tvfsClose,                      /* xClose */
  tvfsRead,                       /* xRead */
  tvfsWrite,                      /* xWrite */
@@ -207,7 +210,9 @@ static sqlite3_io_methods tvfs_io_methods = {
  tvfsShmMap,                     /* xShmMap */
  tvfsShmLock,                    /* xShmLock */
  tvfsShmBarrier,                 /* xShmBarrier */
-  tvfsShmUnmap                    /* xShmUnmap */
+  tvfsShmUnmap,                   /* xShmUnmap */
+  tvfsFetch,
+  tvfsUnfetch
 };

 static int tvfsResultCode(Testvfs *p, int *pRc){
@@ -618,7 +623,10 @@ static int tvfsOpen(

    pMethods = (sqlite3_io_methods *)ckalloc(nByte);
    memcpy(pMethods, &tvfs_io_methods, nByte);
-    pMethods->iVersion = pVfs->iVersion;
+    pMethods->iVersion = pFd->pReal->pMethods->iVersion;
+    if( pMethods->iVersion>pVfs->iVersion ){
+      pMethods->iVersion = pVfs->iVersion;
+    }
    if( pVfs->iVersion>1 && ((Testvfs *)pVfs->pAppData)->isNoshm ){
      pMethods->xShmUnmap = 0;
      pMethods->xShmLock = 0;
@@ -993,6 +1001,21 @@ static int tvfsShmUnmap(
  return rc;
 }

+static int tvfsFetch(
+    sqlite3_file *pFile, 
+    sqlite3_int64 iOfst, 
+    int iAmt, 
+    void **pp
+){
+  TestvfsFd *pFd = tvfsGetFd(pFile);
+  return sqlite3OsFetch(pFd->pReal, iOfst, iAmt, pp);
+}
+
+static int tvfsUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *p){
+  TestvfsFd *pFd = tvfsGetFd(pFile);
+  return sqlite3OsUnfetch(pFd->pReal, iOfst, p);
+}
+
 static int testvfs_obj_cmd(
  ClientData cd,
  Tcl_Interp *interp,
@@ -1343,7 +1366,7 @@ static int testvfs_cmd(
  Tcl_Obj *CONST objv[]
 ){
  static sqlite3_vfs tvfs_vfs = {
-    2,                            /* iVersion */
+    3,                            /* iVersion */
    0,                            /* szOsFile */
    0,                            /* mxPathname */
    0,                            /* pNext */
@@ -1369,6 +1392,9 @@ static int testvfs_cmd(
    tvfsCurrentTime,              /* xCurrentTime */
    0,                            /* xGetLastError */
    0,                            /* xCurrentTimeInt64 */
+    0,                            /* xSetSystemCall */
+    0,                            /* xGetSystemCall */
+    0,                            /* xNextSystemCall */
  };

  Testvfs *p;                     /* New object */
@@ -1382,7 +1408,7 @@ static int testvfs_cmd(
  int isDefault = 0;              /* True if -default is passed */
  int szOsFile = 0;               /* Value passed to -szosfile */
  int mxPathname = -1;            /* Value passed to -mxpathname */
-  int iVersion = 2;               /* Value passed to -iversion */
+  int iVersion = 3;               /* Value passed to -iversion */

  if( objc<2 || 0!=(objc%2) ) goto bad_args;
  for(i=2; i<objc; i += 2){
--- a/src/tokenize.c
+++ b/src/tokenize.c
@@ -396,7 +396,7 @@ int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzErrMsg){


  mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
-  if( db->activeVdbeCnt==0 ){
+  if( db->nVdbeActive==0 ){
    db->u1.isInterrupted = 0;
  }
  pParse->rc = SQLITE_OK;
--- a/src/vacuum.c
+++ b/src/vacuum.c
@@ -111,7 +111,7 @@ int sqlite3RunVacuum(char **pzErrMsg, sqlite3 *db){
    sqlite3SetString(pzErrMsg, db, "cannot VACUUM from within a transaction");
    return SQLITE_ERROR;
  }
-  if( db->activeVdbeCnt>1 ){
+  if( db->nVdbeActive>1 ){
    sqlite3SetString(pzErrMsg, db,"cannot VACUUM - SQL statements in progress");
    return SQLITE_ERROR;
  }
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -589,6 +589,7 @@ int sqlite3VdbeExec(
    goto no_mem;
  }
  assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY );
+  assert( p->bIsReader || p->readOnly!=0 );
  p->rc = SQLITE_OK;
  assert( p->explain==0 );
  p->pResultSet = 0;
@@ -2695,9 +2696,10 @@ case OP_Savepoint: {
  assert( p1==SAVEPOINT_BEGIN||p1==SAVEPOINT_RELEASE||p1==SAVEPOINT_ROLLBACK );
  assert( db->pSavepoint || db->isTransactionSavepoint==0 );
  assert( checkSavepointCount(db) );
+  assert( p->bIsReader );

  if( p1==SAVEPOINT_BEGIN ){
-    if( db->writeVdbeCnt>0 ){
+    if( db->nVdbeWrite>0 ){
      /* A new savepoint cannot be created if there are active write 
      ** statements (i.e. open read/write incremental blob handles).
      */
@@ -2755,7 +2757,7 @@ case OP_Savepoint: {
    if( !pSavepoint ){
      sqlite3SetString(&p->zErrMsg, db, "no such savepoint: %s", zName);
      rc = SQLITE_ERROR;
-    }else if( db->writeVdbeCnt>0 && p1==SAVEPOINT_RELEASE ){
+    }else if( db->nVdbeWrite>0 && p1==SAVEPOINT_RELEASE ){
      /* It is not possible to release (commit) a savepoint if there are 
      ** active write statements.
      */
@@ -2857,10 +2859,11 @@ case OP_AutoCommit: {
  turnOnAC = desiredAutoCommit && !db->autoCommit;
  assert( desiredAutoCommit==1 || desiredAutoCommit==0 );
  assert( desiredAutoCommit==1 || iRollback==0 );
-  assert( db->activeVdbeCnt>0 );  /* At least this one VM is active */
+  assert( db->nVdbeActive>0 );  /* At least this one VM is active */
+  assert( p->bIsReader );

 #if 0
-  if( turnOnAC && iRollback && db->activeVdbeCnt>1 ){
+  if( turnOnAC && iRollback && db->nVdbeActive>1 ){
    /* If this instruction implements a ROLLBACK and other VMs are
    ** still running, and a transaction is active, return an error indicating
    ** that the other VMs must complete first. 
@@ -2870,7 +2873,7 @@ case OP_AutoCommit: {
    rc = SQLITE_BUSY;
  }else
 #endif
-  if( turnOnAC && !iRollback && db->writeVdbeCnt>0 ){
+  if( turnOnAC && !iRollback && db->nVdbeWrite>0 ){
    /* If this instruction implements a COMMIT and other VMs are writing
    ** return an error indicating that the other VMs must complete first. 
    */
@@ -2946,6 +2949,8 @@ case OP_AutoCommit: {
 case OP_Transaction: {
  Btree *pBt;

+  assert( p->bIsReader );
+  assert( p->readOnly==0 || pOp->p2==0 );
  assert( pOp->p1>=0 && pOp->p1<db->nDb );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
  pBt = db->aDb[pOp->p1].pBt;
@@ -2962,7 +2967,7 @@ case OP_Transaction: {
    }

    if( pOp->p2 && p->usesStmtJournal 
-     && (db->autoCommit==0 || db->activeVdbeCnt>1) 
+     && (db->autoCommit==0 || db->nVdbeRead>1) 
    ){
      assert( sqlite3BtreeIsInTrans(pBt) );
      if( p->iStatement==0 ){
@@ -3003,6 +3008,7 @@ case OP_ReadCookie: {               /* out2-prerelease */
  int iDb;
  int iCookie;

+  assert( p->bIsReader );
  iDb = pOp->p1;
  iCookie = pOp->p3;
  assert( pOp->p3<SQLITE_N_BTREE_META );
@@ -3030,6 +3036,7 @@ case OP_SetCookie: {       /* in3 */
  assert( pOp->p2<SQLITE_N_BTREE_META );
  assert( pOp->p1>=0 && pOp->p1<db->nDb );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+  assert( p->readOnly==0 );
  pDb = &db->aDb[pOp->p1];
  assert( pDb->pBt!=0 );
  assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
@@ -3080,6 +3087,7 @@ case OP_VerifyCookie: {
  assert( pOp->p1>=0 && pOp->p1<db->nDb );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
  assert( sqlite3SchemaMutexHeld(db, pOp->p1, 0) );
+  assert( p->bIsReader );
  pBt = db->aDb[pOp->p1].pBt;
  if( pBt ){
    sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta);
@@ -3175,6 +3183,8 @@ case OP_OpenWrite: {

  assert( (pOp->p5&(OPFLAG_P2ISREG|OPFLAG_BULKCSR))==pOp->p5 );
  assert( pOp->opcode==OP_OpenWrite || pOp->p5==0 );
+  assert( p->bIsReader );
+  assert( pOp->opcode==OP_OpenRead || p->readOnly==0 );

  if( p->expired ){
    rc = SQLITE_ABORT;
@@ -4787,15 +4797,18 @@ case OP_Destroy: {     /* out2-prerelease */
  Vdbe *pVdbe;
  int iDb;

+  assert( p->readOnly==0 );
 #ifndef SQLITE_OMIT_VIRTUALTABLE
  iCnt = 0;
  for(pVdbe=db->pVdbe; pVdbe; pVdbe = pVdbe->pNext){
-    if( pVdbe->magic==VDBE_MAGIC_RUN && pVdbe->inVtabMethod<2 && pVdbe->pc>=0 ){
+    if( pVdbe->magic==VDBE_MAGIC_RUN && pVdbe->bIsReader 
+     && pVdbe->inVtabMethod<2 && pVdbe->pc>=0 
+    ){
      iCnt++;
    }
  }
 #else
-  iCnt = db->activeVdbeCnt;
+  iCnt = db->nVdbeRead;
 #endif
  pOut->flags = MEM_Null;
  if( iCnt>1 ){
@@ -4842,6 +4855,7 @@ case OP_Clear: {
  int nChange;
 
  nChange = 0;
+  assert( p->readOnly==0 );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p2))!=0 );
  rc = sqlite3BtreeClearTable(
      db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &nChange : 0)
@@ -4888,6 +4902,7 @@ case OP_CreateTable: {          /* out2-prerelease */
  pgno = 0;
  assert( pOp->p1>=0 && pOp->p1<db->nDb );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+  assert( p->readOnly==0 );
  pDb = &db->aDb[pOp->p1];
  assert( pDb->pBt!=0 );
  if( pOp->opcode==OP_CreateTable ){
@@ -5035,7 +5050,8 @@ case OP_IntegrityCk: {
  int nErr;       /* Number of errors reported */
  char *z;        /* Text of the error report */
  Mem *pnErr;     /* Register keeping track of errors remaining */
-  
+
+  assert( p->bIsReader );
  nRoot = pOp->p2;
  assert( nRoot>0 );
  aRoot = sqlite3DbMallocRaw(db, sizeof(int)*(nRoot+1) );
@@ -5543,6 +5559,7 @@ case OP_Checkpoint: {
  int aRes[3];                    /* Results */
  Mem *pMem;                      /* Write results here */

+  assert( p->readOnly==0 );
  aRes[0] = 0;
  aRes[1] = aRes[2] = -1;
  assert( pOp->p2==SQLITE_CHECKPOINT_PASSIVE
@@ -5592,6 +5609,7 @@ case OP_JournalMode: {    /* out2-prerelease */
       || eNew==PAGER_JOURNALMODE_QUERY
  );
  assert( pOp->p1>=0 && pOp->p1<db->nDb );
+  assert( p->readOnly==0 );

  pBt = db->aDb[pOp->p1].pBt;
  pPager = sqlite3BtreePager(pBt);
@@ -5615,7 +5633,7 @@ case OP_JournalMode: {    /* out2-prerelease */
  if( (eNew!=eOld)
   && (eOld==PAGER_JOURNALMODE_WAL || eNew==PAGER_JOURNALMODE_WAL)
  ){
-    if( !db->autoCommit || db->activeVdbeCnt>1 ){
+    if( !db->autoCommit || db->nVdbeRead>1 ){
      rc = SQLITE_ERROR;
      sqlite3SetString(&p->zErrMsg, db, 
          "cannot change %s wal mode from within a transaction",
@@ -5674,6 +5692,7 @@ case OP_JournalMode: {    /* out2-prerelease */
 ** a transaction.
 */
 case OP_Vacuum: {
+  assert( p->readOnly==0 );
  rc = sqlite3RunVacuum(&p->zErrMsg, db);
  break;
 }
@@ -5691,6 +5710,7 @@ case OP_IncrVacuum: {        /* jump */

  assert( pOp->p1>=0 && pOp->p1<db->nDb );
  assert( (p->btreeMask & (((yDbMask)1)<<pOp->p1))!=0 );
+  assert( p->readOnly==0 );
  pBt = db->aDb[pOp->p1].pBt;
  rc = sqlite3BtreeIncrVacuum(pBt);
  if( rc==SQLITE_DONE ){
@@ -5809,6 +5829,7 @@ case OP_VOpen: {
  sqlite3_vtab *pVtab;
  sqlite3_module *pModule;

+  assert( p->bIsReader );
  pCur = 0;
  pVtabCursor = 0;
  pVtab = pOp->p4.pVtab->pVtab;
@@ -6025,6 +6046,7 @@ case OP_VRename: {
  pName = &aMem[pOp->p1];
  assert( pVtab->pModule->xRename );
  assert( memIsValid(pName) );
+  assert( p->readOnly==0 );
  REGISTER_TRACE(pOp->p1, pName);
  assert( pName->flags & MEM_Str );
  testcase( pName->enc==SQLITE_UTF8 );
@@ -6076,6 +6098,7 @@ case OP_VUpdate: {
  assert( pOp->p2==1        || pOp->p5==OE_Fail   || pOp->p5==OE_Rollback 
       || pOp->p5==OE_Abort || pOp->p5==OE_Ignore || pOp->p5==OE_Replace
  );
+  assert( p->readOnly==0 );
  pVtab = pOp->p4.pVtab->pVtab;
  pModule = (sqlite3_module *)pVtab->pModule;
  nArg = pOp->p2;
--- a/src/vdbeInt.h
+++ b/src/vdbeInt.h
@@ -337,7 +337,8 @@ struct Vdbe {
  bft expired:1;          /* True if the VM needs to be recompiled */
  bft runOnlyOnce:1;      /* Automatically expire on reset */
  bft usesStmtJournal:1;  /* True if uses a statement journal */
-  bft readOnly:1;         /* True for read-only statements */
+  bft readOnly:1;         /* True for statements that do not write */
+  bft bIsReader:1;        /* True for statements that read */
  bft isPrepareV2:1;      /* True if prepared with prepare_v2() */
  bft doingRerun:1;       /* True if rerunning after an auto-reprepare */
  int nChange;            /* Number of db changes made since last reset */
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -382,11 +382,11 @@ static int sqlite3Step(Vdbe *p){
    ** reset the interrupt flag.  This prevents a call to sqlite3_interrupt
    ** from interrupting a statement that has not yet started.
    */
-    if( db->activeVdbeCnt==0 ){
+    if( db->nVdbeActive==0 ){
      db->u1.isInterrupted = 0;
    }

-    assert( db->writeVdbeCnt>0 || db->autoCommit==0 
+    assert( db->nVdbeWrite>0 || db->autoCommit==0 
        || (db->nDeferredCons==0 && db->nDeferredImmCons==0)
    );

@@ -396,8 +396,9 @@ static int sqlite3Step(Vdbe *p){
    }
 #endif

-    db->activeVdbeCnt++;
-    if( p->readOnly==0 ) db->writeVdbeCnt++;
+    db->nVdbeActive++;
+    if( p->readOnly==0 ) db->nVdbeWrite++;
+    if( p->bIsReader ) db->nVdbeRead++;
    p->pc = 0;
  }
 #ifndef SQLITE_OMIT_EXPLAIN
@@ -406,9 +407,9 @@ static int sqlite3Step(Vdbe *p){
  }else
 #endif /* SQLITE_OMIT_EXPLAIN */
  {
-    db->vdbeExecCnt++;
+    db->nVdbeExec++;
    rc = sqlite3VdbeExec(p);
-    db->vdbeExecCnt--;
+    db->nVdbeExec--;
  }

 #ifndef SQLITE_OMIT_TRACE
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -404,14 +404,26 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
  Op *pOp;
  int *aLabel = p->aLabel;
  p->readOnly = 1;
+  p->bIsReader = 0;
  for(pOp=p->aOp, i=p->nOp-1; i>=0; i--, pOp++){
    u8 opcode = pOp->opcode;

    pOp->opflags = sqlite3OpcodeProperty[opcode];
    if( opcode==OP_Function || opcode==OP_AggStep ){
      if( pOp->p5>nMaxArgs ) nMaxArgs = pOp->p5;
-    }else if( (opcode==OP_Transaction && pOp->p2!=0) || opcode==OP_Vacuum ){
+    }else if( opcode==OP_Transaction ){
+      if( pOp->p2!=0 ) p->readOnly = 0;
+      p->bIsReader = 1;
+    }else if( opcode==OP_AutoCommit || opcode==OP_Savepoint ){
+      p->bIsReader = 1;
+    }else if( opcode==OP_Vacuum
+           || opcode==OP_JournalMode
+#ifndef SQLITE_OMIT_WAL
+           || opcode==OP_Checkpoint
+#endif
+    ){
      p->readOnly = 0;
+      p->bIsReader = 1;
 #ifndef SQLITE_OMIT_VIRTUALTABLE
    }else if( opcode==OP_VUpdate ){
      if( pOp->p2>nMaxArgs ) nMaxArgs = pOp->p2;
@@ -437,8 +449,8 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
  }
  sqlite3DbFree(p->db, p->aLabel);
  p->aLabel = 0;
-
  *pMaxFuncArgs = nMaxArgs;
+  assert( p->bIsReader!=0 || p->btreeMask==0 );
 }

 /*
@@ -1964,7 +1976,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
 }

 /* 
-** This routine checks that the sqlite3.activeVdbeCnt count variable
+** This routine checks that the sqlite3.nVdbeActive count variable
 ** matches the number of vdbe's in the list sqlite3.pVdbe that are
 ** currently active. An assertion fails if the two counts do not match.
 ** This is an internal self-check only - it is not an essential processing
@@ -1977,16 +1989,19 @@ static void checkActiveVdbeCnt(sqlite3 *db){
  Vdbe *p;
  int cnt = 0;
  int nWrite = 0;
+  int nRead = 0;
  p = db->pVdbe;
  while( p ){
    if( p->magic==VDBE_MAGIC_RUN && p->pc>=0 ){
      cnt++;
      if( p->readOnly==0 ) nWrite++;
+      if( p->bIsReader ) nRead++;
    }
    p = p->pNext;
  }
-  assert( cnt==db->activeVdbeCnt );
-  assert( nWrite==db->writeVdbeCnt );
+  assert( cnt==db->nVdbeActive );
+  assert( nWrite==db->nVdbeWrite );
+  assert( nRead==db->nVdbeRead );
 }
 #else
 #define checkActiveVdbeCnt(x)
@@ -2125,8 +2140,9 @@ int sqlite3VdbeHalt(Vdbe *p){
  }
  checkActiveVdbeCnt(db);

-  /* No commit or rollback needed if the program never started */
-  if( p->pc>=0 ){
+  /* No commit or rollback needed if the program never started or if the
+  ** SQL statement does not read or write a database file.  */
+  if( p->pc>=0 && p->bIsReader ){
    int mrc;   /* Primary error code from p->rc */
    int eStatementOp = 0;
    int isSpecialError;            /* Set to true if a 'special' error */
@@ -2179,7 +2195,7 @@ int sqlite3VdbeHalt(Vdbe *p){
    */
    if( !sqlite3VtabInSync(db) 
     && db->autoCommit 
-     && db->writeVdbeCnt==(p->readOnly==0) 
+     && db->nVdbeWrite==(p->readOnly==0) 
    ){
      if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){
        rc = sqlite3VdbeCheckFk(p, 1);
@@ -2262,11 +2278,12 @@ int sqlite3VdbeHalt(Vdbe *p){

  /* We have successfully halted and closed the VM.  Record this fact. */
  if( p->pc>=0 ){
-    db->activeVdbeCnt--;
-    if( !p->readOnly ){
-      db->writeVdbeCnt--;
-    }
-    assert( db->activeVdbeCnt>=db->writeVdbeCnt );
+    db->nVdbeActive--;
+    if( !p->readOnly ) db->nVdbeWrite--;
+    if( p->bIsReader ) db->nVdbeRead--;
+    assert( db->nVdbeActive>=db->nVdbeRead );
+    assert( db->nVdbeRead>=db->nVdbeWrite );
+    assert( db->nVdbeWrite>=0 );
  }
  p->magic = VDBE_MAGIC_HALT;
  checkActiveVdbeCnt(db);
@@ -2282,7 +2299,7 @@ int sqlite3VdbeHalt(Vdbe *p){
    sqlite3ConnectionUnlocked(db);
  }

-  assert( db->activeVdbeCnt>0 || db->autoCommit==0 || db->nStatement==0 );
+  assert( db->nVdbeActive>0 || db->autoCommit==0 || db->nStatement==0 );
  return (p->rc==SQLITE_BUSY ? SQLITE_BUSY : SQLITE_OK);
 }

--- a/src/vdbetrace.c
+++ b/src/vdbetrace.c
@@ -47,9 +47,9 @@ static int findNextHostParameter(const char *zSql, int *pnToken){

 /*
 ** This function returns a pointer to a nul-terminated string in memory
-** obtained from sqlite3DbMalloc(). If sqlite3.vdbeExecCnt is 1, then the
+** obtained from sqlite3DbMalloc(). If sqlite3.nVdbeExec is 1, then the
 ** string contains a copy of zRawSql but with host parameters expanded to 
-** their current bindings. Or, if sqlite3.vdbeExecCnt is greater than 1, 
+** their current bindings. Or, if sqlite3.nVdbeExec is greater than 1, 
 ** then the returned string holds a copy of zRawSql with "-- " prepended
 ** to each line of text.
 **
@@ -87,7 +87,7 @@ char *sqlite3VdbeExpandSql(
  sqlite3StrAccumInit(&out, zBase, sizeof(zBase), 
                      db->aLimit[SQLITE_LIMIT_LENGTH]);
  out.db = db;
-  if( db->vdbeExecCnt>1 ){
+  if( db->nVdbeExec>1 ){
    while( *zRawSql ){
      const char *zStart = zRawSql;
      while( *(zRawSql++)!='\n' && *zRawSql );
--- a/src/wal.c
+++ b/src/wal.c
@@ -2463,7 +2463,7 @@ int sqlite3WalBeginWriteTransaction(Wal *pWal){
  if( memcmp(&pWal->hdr, (void *)walIndexHdr(pWal), sizeof(WalIndexHdr))!=0 ){
    walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
    pWal->writeLock = 0;
-    rc = SQLITE_BUSY;
+    rc = SQLITE_BUSY_SNAPSHOT;
  }

  return rc;
--- a/src/where.c
+++ b/src/where.c
@@ -159,7 +159,7 @@ static int whereLoopResize(sqlite3*, WhereLoop*, int);
 ** Each instance of this object holds a sequence of WhereLoop objects
 ** that implement some or all of a query plan.
 **
-** Think of each WhereLoop objects as a node in a graph, which arcs
+** Think of each WhereLoop object as a node in a graph with arcs
 ** showing dependences and costs for travelling between nodes.  (That is
 ** not a completely accurate description because WhereLoop costs are a
 ** vector, not a scalar, and because dependences are many-to-one, not
@@ -429,7 +429,7 @@ struct WhereInfo {
 ** The particular combination of bits in each WhereLoop help to
 ** determine the algorithm that WhereLoop represents.
 */
-#define WHERE_COLUMN_EQ    0x00000001  /* x=EXPR or x IN (...) or x IS NULL */
+#define WHERE_COLUMN_EQ    0x00000001  /* x=EXPR */
 #define WHERE_COLUMN_RANGE 0x00000002  /* x<EXPR and/or x>EXPR */
 #define WHERE_COLUMN_IN    0x00000004  /* x IN (...) */
 #define WHERE_COLUMN_NULL  0x00000008  /* x IS NULL */
@@ -444,7 +444,7 @@ struct WhereInfo {
 #define WHERE_IN_ABLE      0x00000800  /* Able to support an IN operator */
 #define WHERE_ONEROW       0x00001000  /* Selects no more than one row */
 #define WHERE_MULTI_OR     0x00002000  /* OR using multiple indices */
-#define WHERE_TEMP_INDEX   0x00004000  /* Uses an ephemeral index */
+#define WHERE_AUTO_INDEX   0x00004000  /* Uses an ephemeral index */


 /* Convert a WhereCost value (10 times log2(X)) into its integer value X.
@@ -822,7 +822,7 @@ static u16 operatorMask(int op){
 ** established when the pScan object was initialized by whereScanInit().
 ** Return NULL if there are no more matching WhereTerms.
 */
-WhereTerm *whereScanNext(WhereScan *pScan){
+static WhereTerm *whereScanNext(WhereScan *pScan){
  int iCur;            /* The cursor on the LHS of the term */
  int iColumn;         /* The column on the LHS of the term.  -1 for IPK */
  Expr *pX;            /* An expression being tested */
@@ -909,7 +909,7 @@ WhereTerm *whereScanNext(WhereScan *pScan){
 ** If X is not the INTEGER PRIMARY KEY then X must be compatible with
 ** index pIdx.
 */
-WhereTerm *whereScanInit(
+static WhereTerm *whereScanInit(
  WhereScan *pScan,       /* The WhereScan object being initialized */
  WhereClause *pWC,       /* The WHERE clause to be scanned */
  int iCur,               /* Cursor to scan for */
@@ -1738,6 +1738,7 @@ static void exprAnalyze(
  if( pExpr->op==TK_NOTNULL
   && pExpr->pLeft->op==TK_COLUMN
   && pExpr->pLeft->iColumn>=0
+   && OptimizationEnabled(db, SQLITE_Stat3)
  ){
    Expr *pNewExpr;
    Expr *pLeft = pExpr->pLeft;
@@ -2041,6 +2042,7 @@ static void constructAutomaticIndex(
  WhereLoop *pLoop;           /* The Loop object */
  Bitmask idxCols;            /* Bitmap of columns used for indexing */
  Bitmask extraCols;          /* Bitmap of additional columns */
+  u8 sentWarning = 0;         /* True if a warnning has been issued */

  /* Generate code to skip over the creation and initialization of the
  ** transient index on 2nd and subsequent iterations of the loop. */
@@ -2061,6 +2063,12 @@ static void constructAutomaticIndex(
      Bitmask cMask = iCol>=BMS ? MASKBIT(BMS-1) : MASKBIT(iCol);
      testcase( iCol==BMS );
      testcase( iCol==BMS-1 );
+      if( !sentWarning ){
+        sqlite3_log(SQLITE_WARNING_AUTOINDEX,
+            "automatic index on %s(%s)", pTable->zName,
+            pTable->aCol[iCol].zName);
+        sentWarning = 1;
+      }
      if( (idxCols & cMask)==0 ){
        if( whereLoopResize(pParse->db, pLoop, nColumn+1) ) return;
        pLoop->aLTerm[nColumn++] = pTerm;
@@ -2071,7 +2079,7 @@ static void constructAutomaticIndex(
  assert( nColumn>0 );
  pLoop->u.btree.nEq = pLoop->nLTerm = nColumn;
  pLoop->wsFlags = WHERE_COLUMN_EQ | WHERE_IDX_ONLY | WHERE_INDEXED
-                     | WHERE_TEMP_INDEX;
+                     | WHERE_AUTO_INDEX;

  /* Count the number of additional columns needed to create a
  ** covering index.  A "covering index" is an index that contains all
@@ -2571,7 +2579,7 @@ static int whereRangeScanEst(

 #ifdef SQLITE_ENABLE_STAT3

-  if( nEq==0 && p->nSample ){
+  if( nEq==0 && p->nSample && OptimizationEnabled(pParse->db, SQLITE_Stat3) ){
    sqlite3_value *pRangeVal;
    tRowcnt iLower = 0;
    tRowcnt iUpper = p->aiRowEst[0];
@@ -3117,13 +3125,12 @@ static void explainOneScan(
     && ALWAYS(pLoop->u.btree.pIndex!=0)
    ){
      char *zWhere = explainIndexRange(db, pLoop, pItem->pTab);
-      zMsg = sqlite3MAppendf(db, zMsg, "%s USING %s%sINDEX%s%s%s", zMsg, 
-          ((flags & WHERE_TEMP_INDEX)?"AUTOMATIC ":""),
-          ((flags & WHERE_IDX_ONLY)?"COVERING ":""),
-          ((flags & WHERE_TEMP_INDEX)?"":" "),
-          ((flags & WHERE_TEMP_INDEX)?"": pLoop->u.btree.pIndex->zName),
-          zWhere
-      );
+      zMsg = sqlite3MAppendf(db, zMsg,
+               ((flags & WHERE_AUTO_INDEX) ? 
+                   "%s USING AUTOMATIC %sINDEX%.0s%s" :
+                   "%s USING %sINDEX %s%s"), 
+               zMsg, ((flags & WHERE_IDX_ONLY) ? "COVERING " : ""),
+               pLoop->u.btree.pIndex->zName, zWhere);
      sqlite3DbFree(db, zWhere);
    }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){
      zMsg = sqlite3MAppendf(db, zMsg, "%s USING INTEGER PRIMARY KEY", zMsg);
@@ -3328,10 +3335,11 @@ static Bitmask codeOneLoopStart(
      assert( TK_LT==TK_GT+2 );      /*  ... of the TK_xx values... */
      assert( TK_GE==TK_GT+3 );      /*  ... is correcct. */

+      assert( (pStart->wtFlags & TERM_VNULL)==0 );
      testcase( pStart->wtFlags & TERM_VIRTUAL ); /* EV: R-30575-11662 */
      pX = pStart->pExpr;
      assert( pX!=0 );
-      assert( pStart->leftCursor==iCur );
+      testcase( pStart->leftCursor!=iCur ); /* transitive constraints */
      r1 = sqlite3ExprCodeTemp(pParse, pX->pRight, &rTemp);
      sqlite3VdbeAddOp3(v, aMoveOp[pX->op-TK_GT], iCur, addrBrk, r1);
      VdbeComment((v, "pk"));
@@ -3345,7 +3353,8 @@ static Bitmask codeOneLoopStart(
      Expr *pX;
      pX = pEnd->pExpr;
      assert( pX!=0 );
-      assert( pEnd->leftCursor==iCur );
+      assert( (pEnd->wtFlags & TERM_VNULL)==0 );
+      testcase( pEnd->leftCursor!=iCur ); /* Transitive constraints */
      testcase( pEnd->wtFlags & TERM_VIRTUAL ); /* EV: R-30575-11662 */
      memEndValue = ++pParse->nMem;
      sqlite3ExprCode(pParse, pX->pRight, memEndValue);
@@ -3794,7 +3803,7 @@ static Bitmask codeOneLoopStart(
          ** be available.
          */
          pSubLoop = pSubWInfo->a[0].pWLoop;
-          assert( (pSubLoop->wsFlags & WHERE_TEMP_INDEX)==0 );
+          assert( (pSubLoop->wsFlags & WHERE_AUTO_INDEX)==0 );
          if( (pSubLoop->wsFlags & WHERE_INDEXED)!=0
           && (ii==0 || pSubLoop->u.btree.pIndex==pCov)
          ){
@@ -3880,6 +3889,7 @@ static Bitmask codeOneLoopStart(
    if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue;
    if( pTerm->eOperator!=(WO_EQUIV|WO_EQ) ) continue;
    if( pTerm->leftCursor!=iCur ) continue;
+    if( pLevel->iLeftJoin ) continue;
    pE = pTerm->pExpr;
    assert( !ExprHasProperty(pE, EP_FromJoin) );
    assert( (pTerm->prereqRight & newNotReady)!=0 );
@@ -3976,12 +3986,12 @@ static void whereLoopInit(WhereLoop *p){
 ** Clear the WhereLoop.u union.  Leave WhereLoop.pLTerm intact.
 */
 static void whereLoopClearUnion(sqlite3 *db, WhereLoop *p){
-  if( p->wsFlags & (WHERE_VIRTUALTABLE|WHERE_TEMP_INDEX) ){
+  if( p->wsFlags & (WHERE_VIRTUALTABLE|WHERE_AUTO_INDEX) ){
    if( (p->wsFlags & WHERE_VIRTUALTABLE)!=0 && p->u.vtab.needFree ){
      sqlite3_free(p->u.vtab.idxStr);
      p->u.vtab.needFree = 0;
      p->u.vtab.idxStr = 0;
-    }else if( (p->wsFlags & WHERE_TEMP_INDEX)!=0 && p->u.btree.pIndex!=0 ){
+    }else if( (p->wsFlags & WHERE_AUTO_INDEX)!=0 && p->u.btree.pIndex!=0 ){
      sqlite3DbFree(db, p->u.btree.pIndex->zColAff);
      sqlite3DbFree(db, p->u.btree.pIndex);
      p->u.btree.pIndex = 0;
@@ -4024,7 +4034,7 @@ static int whereLoopXfer(sqlite3 *db, WhereLoop *pTo, WhereLoop *pFrom){
  memcpy(pTo->aLTerm, pFrom->aLTerm, pTo->nLTerm*sizeof(pTo->aLTerm[0]));
  if( pFrom->wsFlags & WHERE_VIRTUALTABLE ){
    pFrom->u.vtab.needFree = 0;
-  }else if( (pFrom->wsFlags & WHERE_TEMP_INDEX)!=0 ){
+  }else if( (pFrom->wsFlags & WHERE_AUTO_INDEX)!=0 ){
    pFrom->u.btree.pIndex = 0;
  }
  return SQLITE_OK;
@@ -4274,6 +4284,11 @@ static int whereLoopAddBtreeIndex(
  for(; rc==SQLITE_OK && pTerm!=0; pTerm = whereScanNext(&scan)){
    int nIn = 0;
    if( pTerm->prereqRight & pNew->maskSelf ) continue;
+#ifdef SQLITE_ENABLE_STAT3
+    if( (pTerm->wtFlags & TERM_VNULL)!=0 && pSrc->pTab->aCol[iCol].notNull ){
+      continue; /* skip IS NOT NULL constraints on a NOT NULL column */
+    }
+#endif
    pNew->wsFlags = saved_wsFlags;
    pNew->u.btree.nEq = saved_nEq;
    pNew->nLTerm = saved_nLTerm;
@@ -4336,7 +4351,8 @@ static int whereLoopAddBtreeIndex(
      pNew->nOut = saved_nOut>rDiv+10 ? saved_nOut - rDiv : 10;
    }
 #ifdef SQLITE_ENABLE_STAT3
-    if( pNew->u.btree.nEq==1 && pProbe->nSample ){
+    if( pNew->u.btree.nEq==1 && pProbe->nSample
+     &&  OptimizationEnabled(db, SQLITE_Stat3) ){
      tRowcnt nOut = 0;
      if( (pTerm->eOperator & (WO_EQ|WO_ISNULL))!=0 ){
        testcase( pTerm->eOperator & WO_EQ );
@@ -4420,7 +4436,7 @@ static Bitmask columnsInIndex(Index *pIdx){


 /*
-** Add all WhereLoop objects a single table of the join were the table
+** Add all WhereLoop objects for a single table of the join where the table
 ** is idenfied by pBuilder->pNew->iTab.  That table is guaranteed to be
 ** a b-tree table, not a virtual table.
 */
@@ -4496,13 +4512,16 @@ static int whereLoopAddBtree(
        pNew->nLTerm = 1;
        pNew->aLTerm[0] = pTerm;
        /* TUNING: One-time cost for computing the automatic index is
-        ** approximately 6*N*log2(N) where N is the number of rows in
+        ** approximately 7*N*log2(N) where N is the number of rows in
        ** the table being indexed. */
-        pNew->rSetup = rLogSize + rSize + 26;  assert( 26==whereCost(6) );
-        /* TUNING: Each index lookup yields 10 rows in the table */
-        pNew->nOut = 33;  assert( 33==whereCost(10) );
+        pNew->rSetup = rLogSize + rSize + 28;  assert( 28==whereCost(7) );
+        /* TUNING: Each index lookup yields 20 rows in the table.  This
+        ** is more than the usual guess of 10 rows, since we have no way
+        ** of knowning how selective the index will ultimately be.  It would
+        ** not be unreasonable to make this value much larger. */
+        pNew->nOut = 43;  assert( 43==whereCost(20) );
        pNew->rRun = whereCostAdd(rLogSize,pNew->nOut);
-        pNew->wsFlags = WHERE_TEMP_INDEX;
+        pNew->wsFlags = WHERE_AUTO_INDEX;
        pNew->prereq = mExtra | pTerm->prereqRight;
        rc = whereLoopInsert(pBuilder, pNew);
      }
@@ -4881,12 +4900,19 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
 /*
 ** Examine a WherePath (with the addition of the extra WhereLoop of the 5th
 ** parameters) to see if it outputs rows in the requested ORDER BY
-** (or GROUP BY) without requiring a separate source operation.  Return:
+** (or GROUP BY) without requiring a separate sort operation.  Return:
 ** 
 **    0:  ORDER BY is not satisfied.  Sorting required
 **    1:  ORDER BY is satisfied.      Omit sorting
 **   -1:  Unknown at this time
 **
+** Note that processing for WHERE_GROUPBY and WHERE_DISTINCTBY is not as
+** strict.  With GROUP BY and DISTINCT the only requirement is that
+** equivalent rows appear immediately adjacent to one another.  GROUP BY
+** and DISTINT do not require rows to appear in any particular order as long
+** as equivelent rows are grouped together.  Thus for GROUP BY and DISTINCT
+** the pOrderBy terms can be matched in any order.  With ORDER BY, the 
+** pOrderBy terms must be matched in strict left-to-right order.
 */
 static int wherePathSatisfiesOrderBy(
  WhereInfo *pWInfo,    /* The WHERE clause */
@@ -5134,7 +5160,7 @@ static const char *wherePathName(WherePath *pPath, int nLoop, WhereLoop *pLast){


 /*
-** Given the list of WhereLoop objects on pWInfo->pLoops, this routine
+** Given the list of WhereLoop objects at pWInfo->pLoops, this routine
 ** attempts to find the lowest cost path that visits each WhereLoop
 ** once.  This path is then loaded into the pWInfo->a[].pWLoop fields.
 **
@@ -5551,7 +5577,8 @@ static int whereShortCut(WhereLoopBuilder *pBuilder){
 **
 ** ORDER BY CLAUSE PROCESSING
 **
-** pOrderBy is a pointer to the ORDER BY clause of a SELECT statement,
+** pOrderBy is a pointer to the ORDER BY clause (or the GROUP BY clause
+** if the WHERE_GROUPBY flag is set in wctrlFlags) of a SELECT statement
 ** if there is one.  If there is no ORDER BY clause or if this routine
 ** is called from an UPDATE or DELETE statement, then pOrderBy is NULL.
 */
@@ -5643,6 +5670,7 @@ WhereInfo *sqlite3WhereBegin(
  whereClauseInit(&pWInfo->sWC, pWInfo);
  sqlite3ExprCodeConstants(pParse, pWhere);
  whereSplit(&pWInfo->sWC, pWhere, TK_AND);   /* IMP: R-15842-53296 */
+  sqlite3CodeVerifySchema(pParse, -1); /* Insert the cookie verifier Goto */
    
  /* Special case: a WHERE clause that is constant.  Evaluate the
  ** expression and either jump over all of the code or fall thru.
@@ -5796,6 +5824,7 @@ WhereInfo *sqlite3WhereBegin(
    Bitmask tabUsed = exprListTableUsage(pMaskSet, pResultSet);
    if( pOrderBy ) tabUsed |= exprListTableUsage(pMaskSet, pOrderBy);
    while( pWInfo->nLevel>=2 ){
+      WhereTerm *pTerm, *pEnd;
      pLoop = pWInfo->a[pWInfo->nLevel-1].pWLoop;
      if( (pWInfo->pTabList->a[pLoop->iTab].jointype & JT_LEFT)==0 ) break;
      if( (wctrlFlags & WHERE_WANT_DISTINCT)==0
@@ -5804,6 +5833,15 @@ WhereInfo *sqlite3WhereBegin(
        break;
      }
      if( (tabUsed & pLoop->maskSelf)!=0 ) break;
+      pEnd = sWLB.pWC->a + sWLB.pWC->nTerm;
+      for(pTerm=sWLB.pWC->a; pTerm<pEnd; pTerm++){
+        if( (pTerm->prereqAll & pLoop->maskSelf)!=0
+         && !ExprHasProperty(pTerm->pExpr, EP_FromJoin)
+        ){
+          break;
+        }
+      }
+      if( pTerm<pEnd ) break;
      WHERETRACE(0xffff, ("-> drop loop %c not used\n", pLoop->cId));
      pWInfo->nLevel--;
      nTabList--;
@@ -5827,13 +5865,11 @@ WhereInfo *sqlite3WhereBegin(
  /* Open all tables in the pTabList and any indices selected for
  ** searching those tables.
  */
-  sqlite3CodeVerifySchema(pParse, -1); /* Insert the cookie verifier Goto */
  notReady = ~(Bitmask)0;
  for(ii=0, pLevel=pWInfo->a; ii<nTabList; ii++, pLevel++){
    Table *pTab;     /* Table to open */
    int iDb;         /* Index of database containing table/index */
    struct SrcList_item *pTabItem;
-    WhereLoop *pLoop;

    pTabItem = &pTabList->a[pLevel->iFrom];
    pTab = pTabItem->pTab;
@@ -5869,7 +5905,7 @@ WhereInfo *sqlite3WhereBegin(
      sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName);
    }
 #ifndef SQLITE_OMIT_AUTOMATIC_INDEX
-    if( (pLoop->wsFlags & WHERE_TEMP_INDEX)!=0 ){
+    if( (pLoop->wsFlags & WHERE_AUTO_INDEX)!=0 ){
      constructAutomaticIndex(pParse, &pWInfo->sWC, pTabItem, notReady, pLevel);
    }else
 #endif
@@ -5992,7 +6028,7 @@ void sqlite3WhereEnd(WhereInfo *pWInfo){
      if( !pWInfo->okOnePass && (ws & WHERE_IDX_ONLY)==0 ){
        sqlite3VdbeAddOp1(v, OP_Close, pTabItem->iCursor);
      }
-      if( (ws & WHERE_INDEXED)!=0 && (ws & (WHERE_IPK|WHERE_TEMP_INDEX))==0 ){
+      if( (ws & WHERE_INDEXED)!=0 && (ws & (WHERE_IPK|WHERE_AUTO_INDEX))==0 ){
        sqlite3VdbeAddOp1(v, OP_Close, pLevel->iIdxCur);
      }
    }
--- a/test/autoindex1.test
+++ b/test/autoindex1.test
@@ -23,6 +23,14 @@ ifcapable {!autoindex} {
  return
 }

+# Setup for logging 
+db close
+sqlite3_shutdown
+test_sqlite3_log [list lappend ::log]
+set ::log [list]
+sqlite3 db test.db
+
+
 # With automatic index turned off, we do a full scan of the T2 table
 do_test autoindex1-100 {
  db eval {
@@ -60,6 +68,15 @@ do_test autoindex1-111 {
 do_test autoindex1-112 {
  db status autoindex
 } {7}
+do_test autoindex1-113 {
+  set ::log
+} {SQLITE_WARNING_AUTOINDEX {automatic index on t2(c)}}
+
+db close
+sqlite3_shutdown
+test_sqlite3_log
+sqlite3_initialize
+sqlite3 db test.db

 # The same test as above, but this time the T2 query is a subquery rather
 # than a join.
@@ -94,9 +111,15 @@ do_test autoindex1-212 {

 # Modify the second table of the join while the join is in progress
 #
+do_execsql_test autoindex1-299 {
+  UPDATE sqlite_stat1 SET stat='10000' WHERE tbl='t2';
+  ANALYZE sqlite_master;
+  EXPLAIN QUERY PLAN
+  SELECT b, d FROM t1 CROSS JOIN t2 ON (c=a);
+} {/AUTOMATIC COVERING INDEX/}
 do_test autoindex1-300 {
  set r {}
-  db eval {SELECT b, d FROM t1 JOIN t2 ON (c=a)} {
+  db eval {SELECT b, d FROM t1 CROSS JOIN t2 ON (c=a)} {
    lappend r $b $d
    db eval {UPDATE t2 SET d=d+1}
  }
--- a/test/boundary3.tcl
+++ b/test/boundary3.tcl
@@ -13,7 +13,6 @@ puts {# 2008 December 11
 # This file is automatically generated from a separate TCL script.
 # This file seeks to exercise integer boundary values.
 #
-# $Id: boundary3.tcl,v 1.3 2009/01/02 15:45:48 shane Exp $

 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -40,16 +39,16 @@ foreach x {
 } {
  set x [expr {wide($x)}]
  set boundarynum($x) 1
-  set boundarynum([expr {$x+1}]) 1
-  set boundarynum([expr {-($x+1)}]) 1
-  set boundarynum([expr {-($x+2)}]) 1
-  set boundarynum([expr {$x+$x+1}]) 1
-  set boundarynum([expr {$x+$x+2}]) 1
+  set boundarynum([expr {wide($x+1)}]) 1
+  set boundarynum([expr {wide(-($x+1))}]) 1
+  set boundarynum([expr {wide(-($x+2))}]) 1
+  set boundarynum([expr {wide($x+$x+1)}]) 1
+  set boundarynum([expr {wide($x+$x+2)}]) 1
 }
 set x [expr {wide(127)}]
 for {set i 1} {$i<=9} {incr i} {
  set boundarynum($x) 1
-  set boundarynum([expr {$x+1}]) 1
+  set boundarynum([expr {wide($x+1)}]) 1
  set x [expr {wide($x*128 + 127)}]
 }

@@ -116,7 +115,7 @@ foreach r $nums1 {
  incr a
  set t1ra($r) $a
  set t1ar($a) $r
-  set x [format %08x%08x [expr {wide($r)>>32}] $r]
+  set x [format %016x [expr {wide($r)}]]
  set t1rx($r) $x
  set t1xr($x) $r
  puts "    INSERT INTO t1(oid,a,x) VALUES($r,$a,'$x');"
@@ -158,7 +157,7 @@ foreach r $nums3 {

  set r5 $r.5
  set r0 $r.0
-  if {abs($r)<9.22337203685477580800e+18} {
+   if {abs($r)<0x7FFFFFFFFFFFFFFF || $r==-9223372036854775808} {
    set x $t1rx($r)
    set a $t1ra($r)
    puts "do_test $tname-2.$i.1 \173"
--- a/test/capi3d.test
+++ b/test/capi3d.test
@@ -108,6 +108,13 @@ db eval {CREATE TABLE t1(x)}
 test_is_readonly capi3d-2.3 {INSERT INTO t1 VALUES(5)} 0
 test_is_readonly capi3d-2.4 {UPDATE t1 SET x=x+1 WHERE x<0} 0
 test_is_readonly capi3d-2.5 {SELECT * FROM t1} 1
+ifcapable wal {
+  test_is_readonly capi3d-2.6 {PRAGMA journal_mode=WAL} 0
+  test_is_readonly capi3d-2.7 {PRAGMA wal_checkpoint} 0
+}
+test_is_readonly capi3d-2.8 {PRAGMA application_id=1234} 0
+test_is_readonly capi3d-2.9 {VACUUM} 0
+test_is_readonly capi3d-2.10 {PRAGMA integrity_check} 1
 do_test capi3-2.99 {
  sqlite3_stmt_readonly 0
 } 1
--- a/test/e_expr.test
+++ b/test/e_expr.test
@@ -1294,7 +1294,7 @@ proc rev {str} {
  set ret
 }
 proc reverse {lhs rhs} {
-  string compare [rev $lhs] [ref $rhs]
+  string compare [rev $lhs] [rev $rhs]
 }
 db collate reverse reverse
 do_execsql_test e_expr-23.1.1 {
@@ -1317,7 +1317,7 @@ do_execsql_test e_expr-23.1.4 {
 } {B}
 do_execsql_test e_expr-23.1.5 {
  SELECT CASE b WHEN a THEN 'A' ELSE 'B' END FROM t1
-} {A}
+} {B}
 do_execsql_test e_expr-23.1.6 {
  SELECT CASE 55 WHEN '55' THEN 'A' ELSE 'B' END
 } {B}
--- a/test/memsubsys1.test
+++ b/test/memsubsys1.test
@@ -94,7 +94,7 @@ sqlite3_shutdown
 sqlite3_config_pagecache [expr 1024+$xtra_size] 20
 sqlite3_initialize
 reset_highwater_marks
-build_test_db memsubsys1-2 {PRAGMA page_size=1024}
+build_test_db memsubsys1-2 {PRAGMA page_size=1024; PRAGMA mmap_size=0}
 #show_memstats
 set MEMORY_MANAGEMENT $sqlite_options(memorymanage)
 ifcapable !malloc_usable_size {
--- a/test/mmap3.test
+++ b/test/mmap3.test
@@ -12,7 +12,7 @@

 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
-ifcapable !mmap {
+ifcapable !mmap||!vtab {
  finish_test
  return
 }
--- a/test/mmapfault.test
+++ b/test/mmapfault.test
@@ -0,0 +1,77 @@
+# 2013-05-23
+#
+# 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.
+#
+#***********************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+source $testdir/malloc_common.tcl
+ifcapable !mmap {
+  finish_test
+  return
+}
+set testprefix mmapfault
+
+set a_string_counter 1
+proc a_string {n} {
+  global a_string_counter
+  incr a_string_counter
+  string range [string repeat "${a_string_counter}." $n] 1 $n
+}
+db func a_string a_string
+
+do_test 1-pre {
+  execsql {
+    CREATE TABLE t1(a UNIQUE, b UNIQUE);
+    INSERT INTO t1 VALUES(a_string(200), a_string(300));
+    INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+    INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+  }
+  faultsim_save_and_close
+} {}
+
+
+do_faultsim_test 1 -prep {
+  faultsim_restore_and_reopen
+  db func a_string a_string
+  breakpoint
+  execsql {
+    PRAGMA mmap_size = 1000000;
+    PRAGMA cache_size = 5;
+    BEGIN;
+      INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+      INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+      INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+      INSERT INTO t1 SELECT a_string(200), a_string(300) FROM t1;
+  }
+} -body {
+  execsql { INSERT INTO t1 VALUES(a_string(200), a_string(300)) }
+} -test {
+  faultsim_test_result {0 {}} 
+
+  if {[sqlite3_get_autocommit db]} {
+    sqlite3 db2 test.db
+    set nRow [db2 one {SELECT count(*) FROM t1}]
+    if {$nRow!=4} { error "Database content appears incorrect (1)" }
+    db2 close
+  }
+
+  execsql { INSERT INTO t1 VALUES(a_string(201), a_string(301)) }
+  set nRow [db one {SELECT count(*) FROM t1}]
+  if {$nRow!=5 && $nRow!=66 && $nRow!=65} { 
+    error "Database content appears incorrect (2) ($nRow)" 
+  }
+
+  catch { execsql COMMIT }
+}
+
+
+
+finish_test
--- a/test/pcache.test
+++ b/test/pcache.test
@@ -44,6 +44,7 @@ do_test pcache-1.2 {
  execsql {
    PRAGMA cache_size=12;
    PRAGMA auto_vacuum=0;
+    PRAGMA mmap_size=0;
  }
  pcache_stats
 } {current 1 max 12 min 10 recyclable 1}
--- a/test/percentile.test
+++ b/test/percentile.test
@@ -180,28 +180,30 @@ do_test percentile-1.21 {

 # Million-row Inputs
 #
-do_test percentile-2.0 {
-  load_static_extension db wholenumber
-  execsql {
-    CREATE VIRTUAL TABLE nums USING wholenumber;
-    CREATE TABLE t3(x);
-    INSERT INTO t3 SELECT value-1 FROM nums WHERE value BETWEEN 1 AND 500000;
-    INSERT INTO t3 SELECT value*10 FROM nums
-                    WHERE value BETWEEN 500000 AND 999999;
-    SELECT count(*) FROM t3;
-  }
-} {1000000}
-foreach {in out} {
-    0          0.0
-  100    9999990.0
-   50    2749999.5
-   10      99999.9
-} {
-  do_test percentile-2.1.$in {
+ifcapable vtab {
+  do_test percentile-2.0 {
+    load_static_extension db wholenumber
    execsql {
-      SELECT percentile(x, $in) from t3;
+      CREATE VIRTUAL TABLE nums USING wholenumber;
+      CREATE TABLE t3(x);
+      INSERT INTO t3 SELECT value-1 FROM nums WHERE value BETWEEN 1 AND 500000;
+      INSERT INTO t3 SELECT value*10 FROM nums
+                      WHERE value BETWEEN 500000 AND 999999;
+      SELECT count(*) FROM t3;
    }
-  } $out
+  } {1000000}
+  foreach {in out} {
+      0          0.0
+    100    9999990.0
+     50    2749999.5
+     10      99999.9
+  } {
+    do_test percentile-2.1.$in {
+      execsql {
+        SELECT percentile(x, $in) from t3;
+      }
+    } $out
+  }
 }

 finish_test
--- a/test/select9.test
+++ b/test/select9.test
@@ -450,5 +450,23 @@ do_test select9-5.3 {
  }
 } {/SCAN TABLE/}   ;# Full table scan if the "+x" prevents index usage.

+# 2013-07-09:  Ticket [490a4b7235624298]: 
+# "WHERE 0" on the first element of a UNION causes an assertion fault
+#
+do_execsql_test select9-6.1 {
+  CREATE TABLE t61(a);
+  CREATE TABLE t62(b);
+  INSERT INTO t61 VALUES(111);
+  INSERT INTO t62 VALUES(222);
+  SELECT a FROM t61 WHERE 0 UNION SELECT b FROM t62;
+} {222}
+do_execsql_test select9-6.2 {
+  SELECT a FROM t61 WHERE 0 UNION ALL SELECT b FROM t62;
+} {222}
+do_execsql_test select9-6.3 {
+  SELECT a FROM t61 UNION SELECT b FROM t62 WHERE 0;
+} {111}
+
+

 finish_test
--- a/test/shell1.test
+++ b/test/shell1.test
@@ -397,9 +397,9 @@ do_test shell1-3.11.1 {
 do_test shell1-3.11.2 {
  catchcmd "test.db" ".import FOO"
 } {1 {Error: unknown command or invalid arguments:  "import". Enter ".help" for help}}
-do_test shell1-3.11.2 {
-  catchcmd "test.db" ".import FOO BAR"
-} {1 {Error: no such table: BAR}}
+#do_test shell1-3.11.2 {
+#  catchcmd "test.db" ".import FOO BAR"
+#} {1 {Error: no such table: BAR}}
 do_test shell1-3.11.3 {
  # too many arguments
  catchcmd "test.db" ".import FOO BAR BAD"
@@ -710,6 +710,15 @@ do_test shell1-3-29.1 {
  catchcmd "test.db" ".print this is a test"
 } {0 {this is a test}}

+# dot-command argument quoting
+do_test shell1-3-30.1 {
+  catchcmd {test.db} {.print "this\"is'a\055test" 'this\"is\\a\055test'}
+} {0 {this"is'a-test this\"is\\a\055test}}
+do_test shell1-3-31.1 {
+  catchcmd {test.db} {.print "this\nis\ta\\test" 'this\nis\ta\\test'}
+} [list 0 "this\nis\ta\\test this\\nis\\ta\\\\test"]
+
+
 # Test the output of the ".dump" command
 #
 do_test shell1-4.1 {
--- a/test/shell5.test
+++ b/test/shell5.test
@@ -45,9 +45,9 @@ do_test shell5-1.1.1 {
 do_test shell5-1.1.2 {
  catchcmd "test.db" ".import FOO"
 } {1 {Error: unknown command or invalid arguments:  "import". Enter ".help" for help}}
-do_test shell5-1.1.2 {
-  catchcmd "test.db" ".import FOO BAR"
-} {1 {Error: no such table: BAR}}
+#do_test shell5-1.1.2 {
+#  catchcmd "test.db" ".import FOO BAR"
+#} {1 {Error: no such table: BAR}}
 do_test shell5-1.1.3 {
  # too many arguments
  catchcmd "test.db" ".import FOO BAR BAD"
@@ -101,7 +101,7 @@ do_test shell5-1.4.3 {
  puts $in "1"
  close $in
  set res [catchcmd "test.db" {.import shell5.csv t1}]
-} {1 {Error: shell5.csv line 1: expected 2 columns of data but found 1}}
+} {1 {shell5.csv:1: expected 2 columns but found 1 - filling the rest with NULL}}

 # import file with 1 row, 3 columns (expecting 2 cols)
 do_test shell5-1.4.4 {
@@ -109,14 +109,15 @@ do_test shell5-1.4.4 {
  puts $in "1|2|3"
  close $in
  set res [catchcmd "test.db" {.import shell5.csv t1}]
-} {1 {Error: shell5.csv line 1: expected 2 columns of data but found 3}}
+} {1 {shell5.csv:1: expected 2 columns but found 3 - extras ignored}}

 # import file with 1 row, 2 columns
 do_test shell5-1.4.5 {
  set in [open shell5.csv w]
  puts $in "1|2"
  close $in
-  set res [catchcmd "test.db" {.import shell5.csv t1
+  set res [catchcmd "test.db" {DELETE FROM t1;
+.import shell5.csv t1
 SELECT COUNT(*) FROM t1;}]
 } {0 1}

@@ -197,15 +198,15 @@ SELECT length(b) FROM t1 WHERE a='8';}]
 # This is limited by SQLITE_MAX_VARIABLE_NUMBER, which defaults to 999.
 set cols 999
 do_test shell5-1.6.1 {
-  set sql {CREATE TABLE t2(}
  set data {}
  for {set i 1} {$i<$cols} {incr i} {
-    append sql "c$i,"
+    append data "c$i|"
+  }
+  append data "c$cols\n";
+  for {set i 1} {$i<$cols} {incr i} {
    append data "$i|"
  }
-  append sql "c$cols);"
  append data "$cols"
-  catchcmd "test.db" $sql
  set in [open shell5.csv w]
  puts $in $data
  close $in
@@ -214,16 +215,31 @@ SELECT COUNT(*) FROM t2;}]
 } {0 1}

 # try importing a large number of rows
-set rows 999999
+set rows 9999
 do_test shell5-1.7.1 {
  set in [open shell5.csv w]
+  puts $in a
  for {set i 1} {$i<=$rows} {incr i} {
    puts $in $i
  }
  close $in
-  set res [catchcmd "test.db" {CREATE TABLE t3(a);
+  set res [catchcmd "test.db" {.mode csv
 .import shell5.csv t3
 SELECT COUNT(*) FROM t3;}]
 } [list 0 $rows]

+# Inport from a pipe.  (Unix only, as it requires "awk")
+if {$tcl_platform(platform)=="unix"} {
+  do_test shell5-1.8 {
+    file delete -force test.db
+    catchcmd test.db {.mode csv
+.import "|awk 'END{print \"x,y\";for(i=1;i<=5;i++){print i \",this is \" i}}'" t1
+SELECT * FROM t1;}
+  } {0 {1,"this is 1"
+2,"this is 2"
+3,"this is 3"
+4,"this is 4"
+5,"this is 5"}}
+}
+
 finish_test
--- a/test/spellfix.test
+++ b/test/spellfix.test
@@ -105,6 +105,22 @@ do_test 1.14 {
  catchsql {SELECT next_char('','xyzzy','a')}
 } {1 {no such table: xyzzy}}

+do_execsql_test 1.20 {
+  CREATE TABLE vocab2(w TEXT);
+  CREATE INDEX vocab2w ON vocab2(w COLLATE nocase);
+  INSERT INTO vocab2 VALUES('abc'), ('ABD'), ('aBe'), ('AbF');
+  SELECT next_char('ab', 'vocab2', 'w', null, 'nocase');
+} {cDeF}
+do_execsql_test 1.21 {
+  SELECT next_char('ab','vocab2','w',null,null);
+} {c}
+do_execsql_test 1.22 {
+  SELECT next_char('AB','vocab2','w',null,'NOCASE');
+} {cDeF}
+do_execsql_test 1.23 {
+  SELECT next_char('ab','vocab2','w',null,'binary');
+} {c}
+
 do_execsql_test 2.1 {
  CREATE VIRTUAL TABLE t2 USING spellfix1;
  INSERT INTO t2 (word, soundslike) VALUES('school', 'skuul');
--- a/test/tkt-868145d012.test
+++ b/test/tkt-868145d012.test
@@ -0,0 +1,64 @@
+# 2013 March 05
+#
+# 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.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library. Specifically,
+# it tests that ticket [868145d012a1] is fixed.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_execsql_test tkt-868145d012.100 {
+  CREATE TABLE p (
+    id INTEGER PRIMARY KEY,
+    uid VARCHAR(36),
+    t INTEGER
+  );
+  
+  CREATE TABLE pa (
+    id INTEGER PRIMARY KEY,
+    a_uid VARCHAR(36)
+  );
+  
+  CREATE TABLE a (
+    id INTEGER PRIMARY KEY,
+    uid VARCHAR(36),
+    t INTEGER
+  );
+  
+  INSERT INTO pa VALUES(1,'1234');
+  INSERT INTO pa VALUES(2,'2345');
+  INSERT INTO p VALUES(3,'1234',97);
+  INSERT INTO p VALUES(4,'1234',98);
+  INSERT INTO a VALUES(5,'1234',98);
+  INSERT INTO a VALUES(6,'1234',99);
+} {}
+do_execsql_test tkt-868145d012.110 {
+  SELECT DISTINCT pa.id, p.id, a.id
+  FROM
+    pa
+    LEFT JOIN p ON p.uid='1234'
+    LEFT JOIN a ON a.uid=pa.a_uid
+  WHERE
+    a.t=p.t
+  ;
+} {1 4 5}
+do_execsql_test tkt-868145d012.120 {
+  SELECT DISTINCT pa.id, p.id, a.id
+  FROM
+    pa
+    LEFT JOIN p ON p.uid='1234'
+    LEFT JOIN a ON a.uid=pa.a_uid AND a.t=p.t
+  ORDER BY 1, 2, 3
+  ;
+} {1 3 {} 1 4 5 2 3 {} 2 4 {}}
+
+    
+finish_test
--- a/test/transitive1.test
+++ b/test/transitive1.test
@@ -47,4 +47,59 @@ do_execsql_test transitive1-220 {
  SELECT * FROM t2 WHERE a=b AND c=b AND c<=20 ORDER BY +a;
 } {20 20 20 100 100 100}

+# Test cases for ticket [[d805526eae253103] 2013-07-08
+# "Incorrect join result or assertion fault due to transitive constraints"
+#
+do_execsql_test transitive1-300 {
+  CREATE TABLE t301(w INTEGER PRIMARY KEY, x);
+  CREATE TABLE t302(y INTEGER UNIQUE, z);
+  INSERT INTO t301 VALUES(1,2),(3,4),(5,6);
+  INSERT INTO t302 VALUES(1,3),(3,6),(5,7);
+  SELECT *
+    FROM t301 CROSS JOIN t302
+   WHERE w=y AND y IS NOT NULL
+   ORDER BY +w;
+} {1 2 1 3 3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-301 {
+  SELECT *
+    FROM t301 CROSS JOIN t302
+   WHERE w=y AND y IS NOT NULL
+   ORDER BY w;
+} {1 2 1 3 3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-310 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY +w
+} {3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-311 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY w
+} {3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-312 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY w DESC
+} {5 6 5 7 3 4 3 6}
+do_execsql_test transitive1-320 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 2 AND 4;
+} {3 4 3 6}
+do_execsql_test transitive1-331 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 1 AND 4
+   ORDER BY w;
+} {1 2 1 3 3 4 3 6}
+do_execsql_test transitive1-332 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 1 AND 4
+   ORDER BY w DESC;
+} {3 4 3 6 1 2 1 3}
+
 finish_test
--- a/test/wal6.test
+++ b/test/wal6.test
@@ -14,6 +14,7 @@
 #

 set testdir [file dirname $argv0]
+set testprefix wal6
 source $testdir/tester.tcl
 source $testdir/lock_common.tcl
 source $testdir/wal_common.tcl
@@ -29,18 +30,18 @@ forcedelete test.db
 set all_journal_modes {delete persist truncate memory off}
 foreach jmode $all_journal_modes {

-	do_test wal6-1.0.$jmode {
+  do_test wal6-1.0.$jmode {
    sqlite3 db test.db
    execsql "PRAGMA journal_mode = $jmode;"
-	} $jmode
+  } $jmode

-	do_test wal6-1.1.$jmode {
-	  execsql {
-	    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
-	    INSERT INTO t1 VALUES(1,2);
-	    SELECT * FROM t1;
-	  }
-	} {1 2}
+  do_test wal6-1.1.$jmode {
+    execsql {
+      CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
+      INSERT INTO t1 VALUES(1,2);
+      SELECT * FROM t1;
+    }
+  } {1 2}

 # Under Windows, you'll get an error trying to delete
 # a file this is already opened.  Close the first connection
@@ -51,31 +52,146 @@ if {$tcl_platform(platform)=="windows"} {
  }
 }

-	do_test wal6-1.2.$jmode {
-	  sqlite3 db2 test.db
-	  execsql {
-		PRAGMA journal_mode=WAL;
-		INSERT INTO t1 VALUES(3,4);
-		SELECT * FROM t1 ORDER BY a;
-	  } db2
-	} {wal 1 2 3 4}
+  do_test wal6-1.2.$jmode {
+    sqlite3 db2 test.db
+    execsql {
+    PRAGMA journal_mode=WAL;
+    INSERT INTO t1 VALUES(3,4);
+    SELECT * FROM t1 ORDER BY a;
+    } db2
+  } {wal 1 2 3 4}

 if {$tcl_platform(platform)=="windows"} {
  if {$jmode=="persist" || $jmode=="truncate"} {
-	  sqlite3 db test.db
+    sqlite3 db test.db
  }
 }

-	do_test wal6-1.3.$jmode {
-	  execsql {
-		  SELECT * FROM t1 ORDER BY a;
-	  }
-	} {1 2 3 4}
+  do_test wal6-1.3.$jmode {
+    execsql {
+      SELECT * FROM t1 ORDER BY a;
+    }
+  } {1 2 3 4}

-	db close
-	db2 close
+  db close
+  db2 close
  forcedelete test.db

 }

+#-------------------------------------------------------------------------
+# Test that SQLITE_BUSY_SNAPSHOT is returned as expected.
+#
+reset_db
+sqlite3 db2 test.db
+
+do_execsql_test 2.1 {
+  PRAGMA journal_mode = WAL;
+  CREATE TABLE t1(a PRIMARY KEY, b TEXT);
+  INSERT INTO t1 VALUES(1, 'one');
+  INSERT INTO t1 VALUES(2, 'two');
+  BEGIN;
+    SELECT * FROM t1;
+} {wal 1 one 2 two}
+
+do_test 2.2 {
+  execsql {
+    SELECT * FROM t1;
+    INSERT INTO t1 VALUES(3, 'three');
+  } db2
+} {1 one 2 two}
+
+do_catchsql_test 2.3 { 
+  INSERT INTO t1 VALUES('x', 'x') 
+} {1 {database is locked}}
+
+do_test 2.4 { 
+  list [sqlite3_errcode db] [sqlite3_extended_errcode db]
+} {SQLITE_BUSY SQLITE_BUSY_SNAPSHOT}
+
+do_execsql_test 2.5 {
+  SELECT * FROM t1;
+  COMMIT;
+  INSERT INTO t1 VALUES('x', 'x') 
+} {1 one 2 two}
+
+proc test3 {prefix} {
+  do_test $prefix.1 {
+    execsql { SELECT count(*) FROM t1 } 
+  } {0}
+  do_test $prefix.2 {
+    execsql { INSERT INTO t1 VALUES('x', 'x') } db2
+  } {}
+  do_test $prefix.3 {
+    execsql { INSERT INTO t1 VALUES('y', 'y') }
+  } {}
+  do_test $prefix.4 {
+    execsql { SELECT count(*) FROM t1 } 
+  } {2}
+}
+
+do_execsql_test 2.6.1 { DELETE FROM t1 }
+test3 2.6.2
+
+db func test3 test3
+do_execsql_test 2.6.3 { DELETE FROM t1 }
+db eval {SELECT test3('2.6.4')}
+
+do_test 2.x {
+  db2 close
+} {}
+
+#-------------------------------------------------------------------------
+# Check that if BEGIN IMMEDIATE fails, it does not leave the user with
+# an open read-transaction (unless one was already open before the BEGIN 
+# IMMEDIATE). Even if there are other active VMs.
+#
+
+proc test4 {prefix} {
+  do_test $prefix.1 {
+    catchsql { BEGIN IMMEDIATE }
+  } {1 {database is locked}}
+
+  do_test $prefix.2 {
+    execsql { COMMIT } db2
+  } {}
+
+  do_test $prefix.3 {
+    execsql { BEGIN IMMEDIATE }
+  } {}
+  do_test $prefix.4 {
+    execsql { COMMIT }
+  } {}
+}
+
+reset_db
+sqlite3 db2 test.db
+do_execsql_test 3.1 { 
+  PRAGMA journal_mode = WAL;
+  CREATE TABLE ab(a PRIMARY KEY, b);
+} {wal}
+
+do_test 3.2.1 { 
+  execsql { 
+    BEGIN;
+      INSERT INTO ab VALUES(1, 2);
+  } db2
+} {}
+test4 3.2.2
+
+db func test4 test4
+do_test 3.3.1 {
+  execsql { 
+    BEGIN;
+      INSERT INTO ab VALUES(3, 4);
+  } db2
+} {}
+
+db eval {SELECT test4('3.3.2')}
+
+do_test 3.x {
+  db2 close
+} {}
+
 finish_test
+
--- a/test/where2.test
+++ b/test/where2.test
@@ -307,6 +307,8 @@ do_test where2-6.6 {
  }
 } [list 1 0 4 4 2 1 9 10 sort a i1w b $::idx]

+if {[permutation] != "no_optimization"} {
+
 # Ticket #2249.  Make sure the OR optimization is not attempted if
 # comparisons between columns of different affinities are needed.
 #
@@ -474,6 +476,8 @@ do_test where2-7.4 {
  }
 } {1 2 3 2 3 nosort}

+} ;# if {[permutation] != "no_optimization"}
+
 # Ticket #1807.  Using IN constrains on multiple columns of
 # a multi-column index.
 #
--- a/test/where3.test
+++ b/test/where3.test
@@ -436,5 +436,48 @@ foreach predicate {
  } {1 w-one x-one y-one z-one 9 w-nine x-nine y-nine z-nine}
 }

+do_execsql_test where3-7-setup {
+  CREATE TABLE t71(x1 INTEGER PRIMARY KEY, y1);
+  CREATE TABLE t72(x2 INTEGER PRIMARY KEY, y2);
+  CREATE TABLE t73(x3, y3);
+  CREATE TABLE t74(x4, y4);
+  INSERT INTO t71 VALUES(123,234);
+  INSERT INTO t72 VALUES(234,345);
+  INSERT INTO t73 VALUES(123,234);
+  INSERT INTO t74 VALUES(234,345);
+  INSERT INTO t74 VALUES(234,678);
+} {}
+foreach disabled_opt {none omit-noop-join all} {
+  optimization_control db all 1
+  optimization_control db $disabled_opt 0
+  do_execsql_test where3-7.$disabled_opt.1 {
+    SELECT x1 FROM t71 LEFT JOIN t72 ON x2=y1;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.2 {
+    SELECT x1 FROM t71 LEFT JOIN t72 ON x2=y1 WHERE y2 IS NULL;
+  } {}
+  do_execsql_test where3-7.$disabled_opt.3 {
+    SELECT x1 FROM t71 LEFT JOIN t72 ON x2=y1 WHERE y2 IS NOT NULL;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.4 {
+    SELECT x1 FROM t71 LEFT JOIN t72 ON x2=y1 AND y2 IS NULL;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.5 {
+    SELECT x1 FROM t71 LEFT JOIN t72 ON x2=y1 AND y2 IS NOT NULL;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.6 {
+    SELECT x3 FROM t73 LEFT JOIN t72 ON x2=y3;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.7 {
+    SELECT DISTINCT x3 FROM t73 LEFT JOIN t72 ON x2=y3;
+  } {123}
+  do_execsql_test where3-7.$disabled_opt.8 {
+    SELECT x3 FROM t73 LEFT JOIN t74 ON x4=y3;
+  } {123 123}
+  do_execsql_test where3-7.$disabled_opt.9 {
+    SELECT DISTINCT x3 FROM t73 LEFT JOIN t74 ON x4=y3;
+  } {123}
+}
+

 finish_test
--- a/test/wild001.test
+++ b/test/wild001.test
@@ -0,0 +1,311 @@
+# 2013-07-01
+#
+# 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.
+#
+#***********************************************************************
+# 
+# This is a test case from content taken "from the wild".  In this
+# particular instance, the query was provided with permission by
+# Elan Feingold on 2013-06-27.  His message on the SQLite mailing list
+# on that date reads:
+#
+#------------------------------------------------------------------------------
+# > Can you send (1) the schema (2) the query that is giving problems, and (3)
+# > the content of the sqlite_stat1 table after you have run ANALYZE?   If you
+# > can combine all of the above into a script, that would be great!
+# >
+# > If you send (1..3) above and you give us written permission to include the
+# > query in our test suite, that would be off-the-chain terrific.
+#
+# Please find items 1..3 in this file: http://www.plexapp.com/elan/sqlite_bug.txt
+# 
+# You have our permission to include the query in your test suite.
+# 
+# Thanks for an amazing product.
+#-----------------------------------------------------------------------------
+#
+# This test case merely creates the schema and populates SQLITE_STAT1 and
+# SQLITE_STAT3 then runs an EXPLAIN QUERY PLAN to ensure that the right plan
+# is discovered.  This test case may need to be adjusted for future revisions
+# of the query planner manage to select a better query plan.  The query plan
+# shown here is known to be very fast with the original data.
+#
+# This test should work the same with and without SQLITE_ENABLE_STAT3
+#
+###############################################################################
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !stat3 {
+  finish_test
+  return
+}
+
+do_execsql_test wild001.01 {
+  CREATE TABLE "items" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "secid" integer, "parent_id" integer, "metadata_type" integer, "guid" varchar(255), "media_item_count" integer, "title" varchar(255), "title_sort" varchar(255) COLLATE NOCASE, "original_title" varchar(255), "studio" varchar(255), "rating" float, "rating_count" integer, "tagline" varchar(255), "summary" text, "trivia" text, "quotes" text, "content_rating" varchar(255), "content_rating_age" integer, "index" integer, "absolute_index" integer, "duration" integer, "user_thumb_url" varchar(255), "user_art_url" varchar(255), "user_banner_url" varchar(255), "user_music_url" varchar(255), "user_fields" varchar(255), "tags_genre" varchar(255), "tags_collection" varchar(255), "tags_director" varchar(255), "tags_writer" varchar(255), "tags_star" varchar(255), "originally_available_at" datetime, "available_at" datetime, "expires_at" datetime, "refreshed_at" datetime, "year" integer, "added_at" datetime, "created_at" datetime, "updated_at" datetime, "deleted_at" datetime, "tags_country" varchar(255), "extra_data" varchar(255), "hash" varchar(255));
+  CREATE INDEX "i_secid" ON "items" ("secid" );
+  CREATE INDEX "i_parent_id" ON "items" ("parent_id" );
+  CREATE INDEX "i_created_at" ON "items" ("created_at" );
+  CREATE INDEX "i_index" ON "items" ("index" );
+  CREATE INDEX "i_title" ON "items" ("title" );
+  CREATE INDEX "i_title_sort" ON "items" ("title_sort" );
+  CREATE INDEX "i_guid" ON "items" ("guid" );
+  CREATE INDEX "i_metadata_type" ON "items" ("metadata_type" );
+  CREATE INDEX "i_deleted_at" ON "items" ("deleted_at" );
+  CREATE INDEX "i_secid_ex1" ON "items" ("secid", "metadata_type", "added_at" );
+  CREATE INDEX "i_hash" ON "items" ("hash" );
+  CREATE TABLE "settings" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "account_id" integer, "guid" varchar(255), "rating" float, "view_offset" integer, "view_count" integer, "last_viewed_at" datetime, "created_at" datetime, "updated_at" datetime);
+  CREATE INDEX "s_account_id" ON "settings" ("account_id" );
+  CREATE INDEX "s_guid" ON "settings" ("guid" );
+  ANALYZE;
+  INSERT INTO sqlite_stat1 VALUES('settings','s_guid','4740 1');
+  INSERT INTO sqlite_stat1 VALUES('settings','s_account_id','4740 4740');
+  INSERT INTO sqlite_stat1 VALUES('items','i_hash','27316 2');
+  INSERT INTO sqlite_stat1 VALUES('items','i_secid_ex1','27316 6829 4553 3');
+  INSERT INTO sqlite_stat1 VALUES('items','i_deleted_at','27316 27316');
+  INSERT INTO sqlite_stat1 VALUES('items','i_metadata_type','27316 6829');
+  INSERT INTO sqlite_stat1 VALUES('items','i_guid','27316 2');
+  INSERT INTO sqlite_stat1 VALUES('items','i_title_sort','27316 2');
+  INSERT INTO sqlite_stat1 VALUES('items','i_title','27316 2');
+  INSERT INTO sqlite_stat1 VALUES('items','i_index','27316 144');
+  INSERT INTO sqlite_stat1 VALUES('items','i_created_at','27316 2');
+  INSERT INTO sqlite_stat1 VALUES('items','i_parent_id','27316 15');
+  INSERT INTO sqlite_stat1 VALUES('items','i_secid','27316 6829');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,150,150,'com.plexapp.agents.thetvdb://153021/2/9?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,198,198,'com.plexapp.agents.thetvdb://194031/1/10?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,526,526,'com.plexapp.agents.thetvdb://71256/12/92?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,923,923,'com.plexapp.agents.thetvdb://71256/15/16?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1008,1008,'com.plexapp.agents.thetvdb://71256/15/93?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1053,1053,'com.plexapp.agents.thetvdb://71256/16/21?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1068,1068,'com.plexapp.agents.thetvdb://71256/16/35?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1235,1235,'com.plexapp.agents.thetvdb://71256/17/44?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1255,1255,'com.plexapp.agents.thetvdb://71256/17/62?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1573,1573,'com.plexapp.agents.thetvdb://71663/20/9?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,1580,1580,'com.plexapp.agents.thetvdb://71663/21/16?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2000,2000,'com.plexapp.agents.thetvdb://73141/9/8?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2107,2107,'com.plexapp.agents.thetvdb://73244/6/17?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2256,2256,'com.plexapp.agents.thetvdb://74845/4/7?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2408,2408,'com.plexapp.agents.thetvdb://75978/2/21?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2634,2634,'com.plexapp.agents.thetvdb://79126/1/1?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,2962,2962,'com.plexapp.agents.thetvdb://79274/3/94?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,3160,3160,'com.plexapp.agents.thetvdb://79274/5/129?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,3161,3161,'com.plexapp.agents.thetvdb://79274/5/12?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,3688,3688,'com.plexapp.agents.thetvdb://79274/8/62?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,3714,3714,'com.plexapp.agents.thetvdb://79274/8/86?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,4002,4002,'com.plexapp.agents.thetvdb://79590/13/17?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,4215,4215,'com.plexapp.agents.thetvdb://80727/3/6?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_guid',1,4381,4381,'com.plexapp.agents.thetvdb://83462/3/24?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('settings','s_account_id',4740,0,0,1);
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,1879,1879,'1113f632ccd52ec8b8d7ca3d6d56da4701e48018');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,2721,2721,'1936154b97bb5567163edaebc2806830ae419ccf');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,3035,3035,'1c122331d4b7bfa0dc2c003ab5fb4f7152b9987a');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,3393,3393,'1f81bdbc9acc3321dc592b1a109ca075731b549a');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,6071,6070,'393cf7713efb4519c7a3d1d5403f0d945d15a16a');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,7462,7461,'4677dd37011f8bd9ae7fbbdd3af6dcd8a5b4ab2d');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,8435,8434,'4ffa339485334e81a5e12e03a63b6508d76401cf');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,8716,8714,'52a093852e6599dd5004857b7ff5b5b82c7cdb25');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,9107,9104,'561183e39f866d97ec728e9ff16ac4ad01466111');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,10942,10939,'66e99b72e29610f49499ae09ee04a376210d1f08');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,12143,12139,'71f0602427e173dc2c551535f73fdb6885fe4302');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,14962,14958,'8ca8e4dfba696019830c19ab8a32c7ece9d8534b');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,15179,15174,'8ebf1a5cf33f8ada1fc5853ac06ac4d7e074f825');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,15375,15370,'908bc211bebdf21c79d2d2b54ebaa442ac1f5cae');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,18215,18210,'ab29e4e18ec5a14fef95aa713d69e31c045a22c1');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,18615,18610,'ae84c008cc0c338bf4f28d798a88575746452f6d');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,18649,18644,'aec7c901353e115aa5307e94018ba7507bec3a45');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,19517,19512,'b75025fbf2e9c504e3c1197ff1b69250402a31f8');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,21251,21245,'c7d32f0e3a8f3a0a3dbd00833833d2ccee62f0fd');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,23616,23610,'dd5ff61479a9bd4100de802515d9dcf72d46f07a');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,24287,24280,'e3db00034301b7555419d4ef6f64769298d5845e');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,24949,24942,'ea336abd197ecd7013854a25a4f4eb9dea7927c6');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',1,25574,25567,'f018ea5182ec3f32768ca1c3cefbf3ad160ec20b');
+  INSERT INTO sqlite_stat3 VALUES('items','i_hash',2,26139,26132,'f53709a8d81c12cb0f4f8d58004a25dd063de67c');
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid_ex1',25167,0,0,2);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid_ex1',736,25167,1,3);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid_ex1',15,25903,2,4);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid_ex1',1398,25918,3,5);
+  INSERT INTO sqlite_stat3 VALUES('items','i_deleted_at',27316,0,0,NULL);
+  INSERT INTO sqlite_stat3 VALUES('items','i_metadata_type',2149,0,0,1);
+  INSERT INTO sqlite_stat3 VALUES('items','i_metadata_type',411,2149,1,2);
+  INSERT INTO sqlite_stat3 VALUES('items','i_metadata_type',1440,2560,2,3);
+  INSERT INTO sqlite_stat3 VALUES('items','i_metadata_type',23316,4000,3,4);
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,215,215,'com.plexapp.agents.imdb://tt0065702?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,711,711,'com.plexapp.agents.imdb://tt0198781?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,987,986,'com.plexapp.agents.imdb://tt0454876?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1004,1002,'com.plexapp.agents.imdb://tt0464154?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1056,1053,'com.plexapp.agents.imdb://tt0499549?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1120,1116,'com.plexapp.agents.imdb://tt0903624?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1250,1245,'com.plexapp.agents.imdb://tt1268799?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1270,1264,'com.plexapp.agents.imdb://tt1320261?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',2,1376,1369,'com.plexapp.agents.imdb://tt1772341?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,3035,3027,'com.plexapp.agents.thetvdb://153021/3/14?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,6071,6063,'com.plexapp.agents.thetvdb://71173/1/18?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,6342,6334,'com.plexapp.agents.thetvdb://71256/13/4?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,9107,9099,'com.plexapp.agents.thetvdb://72389/2/19?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,11740,11732,'com.plexapp.agents.thetvdb://73893/2/13?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,12143,12135,'com.plexapp.agents.thetvdb://73976/4/23?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,15179,15171,'com.plexapp.agents.thetvdb://75897/16/12?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,17408,17400,'com.plexapp.agents.thetvdb://76808/2/16?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,17984,17976,'com.plexapp.agents.thetvdb://77068/1/16?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,18215,18207,'com.plexapp.agents.thetvdb://77259/1/1?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,21251,21243,'com.plexapp.agents.thetvdb://78957/8/2?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,24287,24279,'com.plexapp.agents.thetvdb://80337/5/8?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,25513,25505,'com.plexapp.agents.thetvdb://82226/6?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,25548,25540,'com.plexapp.agents.thetvdb://82339/2/10?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_guid',1,26770,26762,'com.plexapp.agents.thetvdb://86901/1/3?lang=en');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',1524,0,0,'');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',2,3034,1391,'Attack of the Giant Squid');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',51,4742,2895,'Brad Sherwood');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',11,4912,2996,'Brian Williams');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',39,5847,3857,'Chip Esten');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',1,6071,4015,'Chuck Versus the DeLorean');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',12,7625,5436,'Denny Siegel');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',30,8924,6618,'Episode 1');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',29,9015,6629,'Episode 2');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',32,9082,6643,'Episode 3');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',28,9135,6654,'Episode 4');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',26,9183,6665,'Episode 5');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',27,9229,6677,'Episode 6');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',22,9266,6688,'Episode 7');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',20,9298,6699,'Episode 8');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',55,11750,8817,'Greg Proops');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',1,12143,9120,'Hardware Jungle');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',33,14712,11435,'Kathy Greenwood');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',3,15179,11840,'Last Call');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',1,18215,14601,'Nature or Nurture?');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',12,18241,14623,'Neil DeGrasse Tyson');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',68,19918,16144,'Pilot');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',7,21251,17298,'Reza Aslan');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title_sort',1,24287,20035,'Technoviking');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1524,0,0,'');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,3035,1429,'Anderson Can''t Dance');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',51,4782,2991,'Brad Sherwood');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',11,4936,3079,'Brian Williams');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',39,5694,3783,'Chip Esten');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,6071,4100,'Clive Warren');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',12,7144,5078,'Denny Siegel');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',30,8249,6097,'Episode 1');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',29,8340,6108,'Episode 2');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',32,8407,6122,'Episode 3');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',28,8460,6133,'Episode 4');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',26,8508,6144,'Episode 5');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',27,8554,6156,'Episode 6');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',22,8591,6167,'Episode 7');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',20,8623,6178,'Episode 8');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,9107,6537,'Fat Albert and the Cosby Kids');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',55,10539,7843,'Greg Proops');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,12143,9276,'Iron Age Remains');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',33,13118,10143,'Kathy Greenwood');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,15179,11972,'Mink');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',68,17411,14035,'Pilot');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',2,18214,14727,'Reflections');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',4,21250,17481,'The Apartment');
+  INSERT INTO sqlite_stat3 VALUES('items','i_title',1,24287,20283,'The Simpsons Already Did It');
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',4315,95,2,1);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1553,4410,3,2);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1485,5963,4,3);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1414,7448,5,4);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1367,8862,6,5);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1328,10229,7,6);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1161,11557,8,7);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1108,12718,9,8);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1033,13826,10,9);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',1014,14859,11,10);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',929,15873,12,11);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',906,16802,13,12);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',844,17708,14,13);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',690,18552,15,14);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',655,19242,16,15);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',625,19897,17,16);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',579,20522,18,17);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',555,21101,19,18);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',526,21656,20,19);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',501,22182,21,20);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',459,22683,22,21);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',439,23142,23,22);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',315,23581,24,23);
+  INSERT INTO sqlite_stat3 VALUES('items','i_index',192,24177,26,25);
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1851,0,0,NULL);
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',373,1857,2,'2011-10-22 14:54:39');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',595,2230,3,'2011-10-22 14:54:41');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',337,2825,4,'2011-10-22 14:54:43');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',361,3378,8,'2011-10-22 14:54:54');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',160,3739,9,'2011-10-22 14:54:56');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',315,4000,11,'2011-10-22 14:54:59');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',321,4334,13,'2011-10-22 14:55:02');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1292,4723,16,'2011-10-22 14:55:06');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',161,6015,17,'2011-10-22 14:55:07');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1,9107,2677,'2012-09-04 18:07:50');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',313,9717,3270,'2012-10-18 16:50:21');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',450,10030,3271,'2012-10-18 16:50:22');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',389,10668,3275,'2012-10-18 16:50:26');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',796,11057,3276,'2012-10-18 16:51:06');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',161,12041,3280,'2012-10-19 19:52:37');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',135,13281,4186,'2013-02-19 00:56:10');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1063,13416,4187,'2013-02-19 00:56:11');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',797,14479,4188,'2013-02-19 00:56:13');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',147,15276,4189,'2013-02-19 00:56:15');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',346,15423,4190,'2013-02-19 00:56:16');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1,18215,6436,'2013-05-05 14:09:54');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',2,21251,8122,'2013-05-24 15:25:45');
+  INSERT INTO sqlite_stat3 VALUES('items','i_created_at',1,24287,11116,'2013-05-26 14:17:39');
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',2560,0,0,NULL);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',18,3022,31,2350);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',10,6068,285,8150);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',158,6346,315,8949);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',34,9094,562,18831);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',20,12139,794,22838);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',134,14033,886,24739);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',159,14167,887,24740);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',161,14326,888,24741);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',161,14487,889,24742);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',124,14648,890,24743);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',157,14772,891,24744);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',126,15043,894,24747);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',40,15169,895,24748);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',161,15243,898,24753);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',138,15404,899,24754);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',160,15542,900,24755);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',161,15702,901,24756);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',161,15863,902,24757);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',124,16024,903,24758);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',155,16148,904,24759);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',26,18208,1043,29704);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',2,21251,1282,32952);
+  INSERT INTO sqlite_stat3 VALUES('items','i_parent_id',13,24279,1583,36068);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid',25167,0,0,2);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid',736,25167,1,3);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid',15,25903,2,4);
+  INSERT INTO sqlite_stat3 VALUES('items','i_secid',1398,25918,3,5);
+  ANALYZE sqlite_master;
+  
+  explain query plan
+  select items.title
+    from items
+         join items as child on child.parent_id=items.id
+         join items as grandchild on grandchild.parent_id=child.id
+         join settings
+                    on settings.guid=grandchild.guid
+                   and settings.account_id=1
+   where items.metadata_type=2
+     and items.secid=2
+     and settings.last_viewed_at is not null
+   group by items.id
+   order by settings.last_viewed_at desc
+   limit 10;
+} [list \
+ 0 0 3 {SEARCH TABLE settings USING INDEX s_account_id (account_id=?)} \
+ 0 1 2 {SEARCH TABLE items AS grandchild USING INDEX i_guid (guid=?)} \
+ 0 2 1 {SEARCH TABLE items AS child USING INTEGER PRIMARY KEY (rowid=?)} \
+ 0 3 0 {SEARCH TABLE items USING INTEGER PRIMARY KEY (rowid=?)} \
+ 0 0 0 {USE TEMP B-TREE FOR GROUP BY} \
+ 0 0 0 {USE TEMP B-TREE FOR ORDER BY}]
+
+
+finish_test