$(TOP)/src/vdbeaux.c \
  $(TOP)/src/vdbeblob.c \
  $(TOP)/src/vdbemem.c \
  $(TOP)/src/vdbesort.c \
  $(TOP)/src/vdbetrace.c \
  $(TOP)/src/vdbeInt.h \
  $(TOP)/src/vtab.c \

  $(TOP)/src/wal.c \
  $(TOP)/src/wal.h \
  $(TOP)/src/walker.c \
  $(TOP)/src/where.c \
  $(TOP)/src/whereInt.h

# Source code for extensions
................................................................................
   $(TOP)/src/pragma.h \
   sqlite3.h  \
   $(TOP)/src/sqlite3ext.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqliteLimit.h \
   $(TOP)/src/vdbe.h \
   $(TOP)/src/vdbeInt.h \

   $(TOP)/src/whereInt.h \
   config.h

# Header files used by extensions
#
EXTHDR += \
  $(TOP)/ext/fts1/fts1.h \

  $(TOP)/src/vdbeaux.c \
  $(TOP)/src/vdbeblob.c \
  $(TOP)/src/vdbemem.c \
  $(TOP)/src/vdbesort.c \
  $(TOP)/src/vdbetrace.c \
  $(TOP)/src/vdbeInt.h \
  $(TOP)/src/vtab.c \
  $(TOP)/src/vxworks.h \
  $(TOP)/src/wal.c \
  $(TOP)/src/wal.h \
  $(TOP)/src/walker.c \
  $(TOP)/src/where.c \
  $(TOP)/src/whereInt.h

# Source code for extensions
................................................................................
   $(TOP)/src/pragma.h \
   sqlite3.h  \
   $(TOP)/src/sqlite3ext.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqliteLimit.h \
   $(TOP)/src/vdbe.h \
   $(TOP)/src/vdbeInt.h \
   $(TOP)/src/vxworks.h \
   $(TOP)/src/whereInt.h \
   config.h

# Header files used by extensions
#
EXTHDR += \
  $(TOP)/ext/fts1/fts1.h \

  $(TOP)\src\vdbeaux.c \
  $(TOP)\src\vdbeblob.c \
  $(TOP)\src\vdbemem.c \
  $(TOP)\src\vdbesort.c \
  $(TOP)\src\vdbetrace.c \
  $(TOP)\src\vdbeInt.h \
  $(TOP)\src\vtab.c \

  $(TOP)\src\wal.c \
  $(TOP)\src\wal.h \
  $(TOP)\src\walker.c \
  $(TOP)\src\where.c \
  $(TOP)\src\whereInt.h

# Source code for extensions
................................................................................
   $(TOP)\src\pragma.h \
   sqlite3.h \
   $(TOP)\src\sqlite3ext.h \
   $(TOP)\src\sqliteInt.h \
   $(TOP)\src\sqliteLimit.h \
   $(TOP)\src\vdbe.h \
   $(TOP)\src\vdbeInt.h \

   $(TOP)\src\whereInt.h

# Header files used by extensions
#
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\fts1\fts1.h \
  $(TOP)\ext\fts1\fts1_hash.h \

  $(TOP)\src\vdbeaux.c \
  $(TOP)\src\vdbeblob.c \
  $(TOP)\src\vdbemem.c \
  $(TOP)\src\vdbesort.c \
  $(TOP)\src\vdbetrace.c \
  $(TOP)\src\vdbeInt.h \
  $(TOP)\src\vtab.c \
  $(TOP)\src\vxworks.h \
  $(TOP)\src\wal.c \
  $(TOP)\src\wal.h \
  $(TOP)\src\walker.c \
  $(TOP)\src\where.c \
  $(TOP)\src\whereInt.h

# Source code for extensions
................................................................................
   $(TOP)\src\pragma.h \
   sqlite3.h \
   $(TOP)\src\sqlite3ext.h \
   $(TOP)\src\sqliteInt.h \
   $(TOP)\src\sqliteLimit.h \
   $(TOP)\src\vdbe.h \
   $(TOP)\src\vdbeInt.h \
   $(TOP)\src\vxworks.h \
   $(TOP)\src\whereInt.h

# Header files used by extensions
#
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\fts1\fts1.h \
  $(TOP)\ext\fts1\fts1_hash.h \

3.8.8

3.8.9

#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.62 for sqlite 3.8.8.
#
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
# 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
# This configure script is free software; the Free Software Foundation
# gives unlimited permission to copy, distribute and modify it.
## --------------------- ##
## M4sh Initialization.  ##
................................................................................
MFLAGS=
MAKEFLAGS=
SHELL=${CONFIG_SHELL-/bin/sh}

# Identity of this package.
PACKAGE_NAME='sqlite'
PACKAGE_TARNAME='sqlite'
PACKAGE_VERSION='3.8.8'
PACKAGE_STRING='sqlite 3.8.8'
PACKAGE_BUGREPORT=''

# Factoring default headers for most tests.
ac_includes_default="\
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
................................................................................
#
# Report the --help message.
#
if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
\`configure' configures sqlite 3.8.8 to adapt to many kinds of systems.

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

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.
................................................................................
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
_ACEOF
fi

if test -n "$ac_init_help"; then
  case $ac_init_help in
     short | recursive ) echo "Configuration of sqlite 3.8.8:";;
   esac
  cat <<\_ACEOF

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
................................................................................
    cd "$ac_pwd" || { ac_status=$?; break; }
  done
fi

test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
  cat <<\_ACEOF
sqlite configure 3.8.8
generated by GNU Autoconf 2.62

Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
  exit
fi
cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by sqlite $as_me 3.8.8, which was
generated by GNU Autoconf 2.62.  Invocation command line was

  $ $0 $@

_ACEOF
exec 5>>config.log
{
................................................................................

exec 6>&1

# Save the log message, to keep $[0] and so on meaningful, and to
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by sqlite $as_me 3.8.8, which was
generated by GNU Autoconf 2.62.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
  CONFIG_HEADERS  = $CONFIG_HEADERS
  CONFIG_LINKS    = $CONFIG_LINKS
  CONFIG_COMMANDS = $CONFIG_COMMANDS
  $ $0 $@
................................................................................
$config_commands

Report bugs to <bug-autoconf@gnu.org>."

_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_version="\\
sqlite config.status 3.8.8
configured by $0, generated by GNU Autoconf 2.62,
  with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

Copyright (C) 2008 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."

#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.62 for sqlite 3.8.9.
#
# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
# 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
# This configure script is free software; the Free Software Foundation
# gives unlimited permission to copy, distribute and modify it.
## --------------------- ##
## M4sh Initialization.  ##
................................................................................
MFLAGS=
MAKEFLAGS=
SHELL=${CONFIG_SHELL-/bin/sh}

# Identity of this package.
PACKAGE_NAME='sqlite'
PACKAGE_TARNAME='sqlite'
PACKAGE_VERSION='3.8.9'
PACKAGE_STRING='sqlite 3.8.9'
PACKAGE_BUGREPORT=''

# Factoring default headers for most tests.
ac_includes_default="\
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
................................................................................
#
# Report the --help message.
#
if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
\`configure' configures sqlite 3.8.9 to adapt to many kinds of systems.

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

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.
................................................................................
  --build=BUILD     configure for building on BUILD [guessed]
  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
_ACEOF
fi

if test -n "$ac_init_help"; then
  case $ac_init_help in
     short | recursive ) echo "Configuration of sqlite 3.8.9:";;
   esac
  cat <<\_ACEOF

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
................................................................................
    cd "$ac_pwd" || { ac_status=$?; break; }
  done
fi

test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
  cat <<\_ACEOF
sqlite configure 3.8.9
generated by GNU Autoconf 2.62

Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
  exit
fi
cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by sqlite $as_me 3.8.9, which was
generated by GNU Autoconf 2.62.  Invocation command line was

  $ $0 $@

_ACEOF
exec 5>>config.log
{
................................................................................

exec 6>&1

# Save the log message, to keep $[0] and so on meaningful, and to
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by sqlite $as_me 3.8.9, which was
generated by GNU Autoconf 2.62.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
  CONFIG_HEADERS  = $CONFIG_HEADERS
  CONFIG_LINKS    = $CONFIG_LINKS
  CONFIG_COMMANDS = $CONFIG_COMMANDS
  $ $0 $@
................................................................................
$config_commands

Report bugs to <bug-autoconf@gnu.org>."

_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_version="\\
sqlite config.status 3.8.9
configured by $0, generated by GNU Autoconf 2.62,
  with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

Copyright (C) 2008 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."

      /* Loop through all columns of the table being considered for snippets.
      ** If the iCol argument to this function was negative, this means all
      ** columns of the FTS3 table. Otherwise, only column iCol is considered.
      */
      for(iRead=0; iRead<pTab->nColumn; iRead++){
        SnippetFragment sF = {0, 0, 0, 0};
        int iS;
        if( iCol>=0 && iRead!=iCol ) continue;

        /* Find the best snippet of nFToken tokens in column iRead. */
        rc = fts3BestSnippet(nFToken, pCsr, iRead, mCovered, &mSeen, &sF, &iS);
        if( rc!=SQLITE_OK ){
          goto snippet_out;
        }

      /* Loop through all columns of the table being considered for snippets.
      ** If the iCol argument to this function was negative, this means all
      ** columns of the FTS3 table. Otherwise, only column iCol is considered.
      */
      for(iRead=0; iRead<pTab->nColumn; iRead++){
        SnippetFragment sF = {0, 0, 0, 0};
        int iS = 0;
        if( iCol>=0 && iRead!=iCol ) continue;

        /* Find the best snippet of nFToken tokens in column iRead. */
        rc = fts3BestSnippet(nFToken, pCsr, iRead, mCovered, &mSeen, &sF, &iS);
        if( rc!=SQLITE_OK ){
          goto snippet_out;
        }

  sqlite3_value **argv
){
  const unsigned char *pIn;
  unsigned char *pOut;
  unsigned int nIn;
  unsigned long int nOut;
  unsigned char x[8];

  int i, j;

  pIn = sqlite3_value_blob(argv[0]);
  nIn = sqlite3_value_bytes(argv[0]);
  nOut = 13 + nIn + (nIn+999)/1000;
  pOut = sqlite3_malloc( nOut+5 );
  for(i=4; i>=0; i--){
    x[i] = (nIn >> (7*(4-i)))&0x7f;
  }
  for(i=0; i<4 && x[i]==0; i++){}
  for(j=0; i<=4; i++, j++) pOut[j] = x[i];
  pOut[j-1] |= 0x80;
  compress(&pOut[j], &nOut, pIn, nIn);

  sqlite3_result_blob(context, pOut, nOut+j, sqlite3_free);



}

/*
** Implementation of the "uncompress(X)" SQL function.  The argument X
** is a blob which was obtained from compress(Y).  The output will be
** the value Y.
*/
................................................................................
    nOut = (nOut<<7) | (pIn[i]&0x7f);
    if( (pIn[i]&0x80)!=0 ){ i++; break; }
  }
  pOut = sqlite3_malloc( nOut+1 );
  rc = uncompress(pOut, &nOut, &pIn[i], nIn-i);
  if( rc==Z_OK ){
    sqlite3_result_blob(context, pOut, nOut, sqlite3_free);


  }
}


#ifdef _WIN32
__declspec(dllexport)
#endif

  sqlite3_value **argv
){
  const unsigned char *pIn;
  unsigned char *pOut;
  unsigned int nIn;
  unsigned long int nOut;
  unsigned char x[8];
  int rc;
  int i, j;

  pIn = sqlite3_value_blob(argv[0]);
  nIn = sqlite3_value_bytes(argv[0]);
  nOut = 13 + nIn + (nIn+999)/1000;
  pOut = sqlite3_malloc( nOut+5 );
  for(i=4; i>=0; i--){
    x[i] = (nIn >> (7*(4-i)))&0x7f;
  }
  for(i=0; i<4 && x[i]==0; i++){}
  for(j=0; i<=4; i++, j++) pOut[j] = x[i];
  pOut[j-1] |= 0x80;
  rc = compress(&pOut[j], &nOut, pIn, nIn);
  if( rc==Z_OK ){
    sqlite3_result_blob(context, pOut, nOut+j, sqlite3_free);
  }else{
    sqlite3_free(pOut);
  }
}

/*
** Implementation of the "uncompress(X)" SQL function.  The argument X
** is a blob which was obtained from compress(Y).  The output will be
** the value Y.
*/
................................................................................
    nOut = (nOut<<7) | (pIn[i]&0x7f);
    if( (pIn[i]&0x80)!=0 ){ i++; break; }
  }
  pOut = sqlite3_malloc( nOut+1 );
  rc = uncompress(pOut, &nOut, &pIn[i], nIn-i);
  if( rc==Z_OK ){
    sqlite3_result_blob(context, pOut, nOut, sqlite3_free);
  }else{
    sqlite3_free(pOut);
  }
}


#ifdef _WIN32
__declspec(dllexport)
#endif

  $(TOP)/src/vdbeaux.c \
  $(TOP)/src/vdbeblob.c \
  $(TOP)/src/vdbemem.c \
  $(TOP)/src/vdbesort.c \
  $(TOP)/src/vdbetrace.c \
  $(TOP)/src/vdbeInt.h \
  $(TOP)/src/vtab.c \

  $(TOP)/src/wal.c \
  $(TOP)/src/wal.h \
  $(TOP)/src/walker.c \
  $(TOP)/src/where.c \
  $(TOP)/src/whereInt.h

# Source code for extensions
................................................................................
   $(TOP)/src/pragma.h \
   sqlite3.h  \
   $(TOP)/src/sqlite3ext.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqliteLimit.h \
   $(TOP)/src/vdbe.h \
   $(TOP)/src/vdbeInt.h \

   $(TOP)/src/whereInt.h

# Header files used by extensions
#
EXTHDR += \
  $(TOP)/ext/fts1/fts1.h \
  $(TOP)/ext/fts1/fts1_hash.h \

  $(TOP)/src/vdbeaux.c \
  $(TOP)/src/vdbeblob.c \
  $(TOP)/src/vdbemem.c \
  $(TOP)/src/vdbesort.c \
  $(TOP)/src/vdbetrace.c \
  $(TOP)/src/vdbeInt.h \
  $(TOP)/src/vtab.c \
  $(TOP)/src/vxworks.h \
  $(TOP)/src/wal.c \
  $(TOP)/src/wal.h \
  $(TOP)/src/walker.c \
  $(TOP)/src/where.c \
  $(TOP)/src/whereInt.h

# Source code for extensions
................................................................................
   $(TOP)/src/pragma.h \
   sqlite3.h  \
   $(TOP)/src/sqlite3ext.h \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/sqliteLimit.h \
   $(TOP)/src/vdbe.h \
   $(TOP)/src/vdbeInt.h \
   $(TOP)/src/vxworks.h \
   $(TOP)/src/whereInt.h

# Header files used by extensions
#
EXTHDR += \
  $(TOP)/ext/fts1/fts1.h \
  $(TOP)/ext/fts1/fts1_hash.h \

/*
** pExpr points to an expression which implements a function.  If
** it is appropriate to apply the LIKE optimization to that function
** then set aWc[0] through aWc[2] to the wildcard characters and
** return TRUE.  If the function is not a LIKE-style function then
** return FALSE.





*/
int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){
  FuncDef *pDef;
  if( pExpr->op!=TK_FUNCTION 
   || !pExpr->x.pList 
   || pExpr->x.pList->nExpr!=2
  ){

/*
** pExpr points to an expression which implements a function.  If
** it is appropriate to apply the LIKE optimization to that function
** then set aWc[0] through aWc[2] to the wildcard characters and
** return TRUE.  If the function is not a LIKE-style function then
** return FALSE.
**
** *pIsNocase is set to true if uppercase and lowercase are equivalent for
** the function (default for LIKE).  If the function makes the distinction
** between uppercase and lowercase (as does GLOB) then *pIsNocase is set to
** false.
*/
int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){
  FuncDef *pDef;
  if( pExpr->op!=TK_FUNCTION 
   || !pExpr->x.pList 
   || pExpr->x.pList->nExpr!=2
  ){

  switch( op ){

    /* Mutex configuration options are only available in a threadsafe
    ** compile.
    */
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0  /* IMP: R-54466-46756 */
    case SQLITE_CONFIG_SINGLETHREAD: {
      /* Disable all mutexing */

      sqlite3GlobalConfig.bCoreMutex = 0;
      sqlite3GlobalConfig.bFullMutex = 0;
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-20520-54086 */
    case SQLITE_CONFIG_MULTITHREAD: {
      /* Disable mutexing of database connections */
      /* Enable mutexing of core data structures */
      sqlite3GlobalConfig.bCoreMutex = 1;
      sqlite3GlobalConfig.bFullMutex = 0;
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-59593-21810 */
    case SQLITE_CONFIG_SERIALIZED: {
      /* Enable all mutexing */

      sqlite3GlobalConfig.bCoreMutex = 1;
      sqlite3GlobalConfig.bFullMutex = 1;
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-63666-48755 */
    case SQLITE_CONFIG_MUTEX: {
      /* Specify an alternative mutex implementation */
      sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*);
................................................................................
/* EVIDENCE-OF: R-06626-12911 The SQLITE_CONFIG_HEAP option is only
** available if SQLite is compiled with either SQLITE_ENABLE_MEMSYS3 or
** SQLITE_ENABLE_MEMSYS5 and returns SQLITE_ERROR if invoked otherwise. */
#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
    case SQLITE_CONFIG_HEAP: {
      /* EVIDENCE-OF: R-19854-42126 There are three arguments to
      ** SQLITE_CONFIG_HEAP: An 8-byte aligned pointer to the memory, the
      ** number of bytes in the memory buffer, and the minimum allocation size. */

      sqlite3GlobalConfig.pHeap = va_arg(ap, void*);
      sqlite3GlobalConfig.nHeap = va_arg(ap, int);
      sqlite3GlobalConfig.mnReq = va_arg(ap, int);

      if( sqlite3GlobalConfig.mnReq<1 ){
        sqlite3GlobalConfig.mnReq = 1;
      }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){
................................................................................
      ** negative, then that argument is changed to its compile-time default.
      **
      ** EVIDENCE-OF: R-34993-45031 The maximum allowed mmap size will be
      ** silently truncated if necessary so that it does not exceed the
      ** compile-time maximum mmap size set by the SQLITE_MAX_MMAP_SIZE
      ** compile-time option.
      */
      if( mxMmap<0 || mxMmap>SQLITE_MAX_MMAP_SIZE ) mxMmap = SQLITE_MAX_MMAP_SIZE;


      if( szMmap<0 ) szMmap = SQLITE_DEFAULT_MMAP_SIZE;
      if( szMmap>mxMmap) szMmap = mxMmap;
      sqlite3GlobalConfig.mxMmap = mxMmap;
      sqlite3GlobalConfig.szMmap = szMmap;
      break;
    }

................................................................................
    flags |= SQLITE_OPEN_URI;

    for(iIn=0; iIn<nUri; iIn++) nByte += (zUri[iIn]=='&');
    zFile = sqlite3_malloc(nByte);
    if( !zFile ) return SQLITE_NOMEM;

    iIn = 5;
#ifndef SQLITE_ALLOW_URI_AUTHORITY












    /* Discard the scheme and authority segments of the URI. */
    if( zUri[5]=='/' && zUri[6]=='/' ){
      iIn = 7;
      while( zUri[iIn] && zUri[iIn]!='/' ) iIn++;
      if( iIn!=7 && (iIn!=16 || memcmp("localhost", &zUri[7], 9)) ){
        *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s", 
            iIn-7, &zUri[7]);
................................................................................
                        sqlite3GlobalConfig.nLookaside);

  sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT);

opendb_out:
  sqlite3_free(zOpen);
  if( db ){
    assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 );

    sqlite3_mutex_leave(db->mutex);
  }
  rc = sqlite3_errcode(db);
  assert( db!=0 || rc==SQLITE_NOMEM );
  if( rc==SQLITE_NOMEM ){
    sqlite3_close(db);
    db = 0;
................................................................................
    ** not.
    */
    case SQLITE_TESTCTRL_ISINIT: {
      if( sqlite3GlobalConfig.isInit==0 ) rc = SQLITE_ERROR;
      break;
    }

    /*   sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, db, dbName, onOff, tnum);
    **
    ** This test control is used to create imposter tables.  "db" is a pointer
    ** to the database connection.  dbName is the database name (ex: "main" or
    ** "temp") which will receive the imposter.  "onOff" turns imposter mode on
    ** or off.  "tnum" is the root page of the b-tree to which the imposter
    ** table should connect.
    **
    ** Enable imposter mode only when the schema has already been parsed.  Then
    ** run a single CREATE TABLE statement to construct the imposter table in the
    ** parsed schema.  Then turn imposter mode back off again.
    **
    ** If onOff==0 and tnum>0 then reset the schema for all databases, causing
    ** the schema to be reparsed the next time it is needed.  This has the
    ** effect of erasing all imposter tables.
    */
    case SQLITE_TESTCTRL_IMPOSTER: {
      sqlite3 *db = va_arg(ap, sqlite3*);

  switch( op ){

    /* Mutex configuration options are only available in a threadsafe
    ** compile.
    */
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0  /* IMP: R-54466-46756 */
    case SQLITE_CONFIG_SINGLETHREAD: {
      /* EVIDENCE-OF: R-02748-19096 This option sets the threading mode to
      ** Single-thread. */
      sqlite3GlobalConfig.bCoreMutex = 0;  /* Disable mutex on core */
      sqlite3GlobalConfig.bFullMutex = 0;  /* Disable mutex on connections */
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-20520-54086 */
    case SQLITE_CONFIG_MULTITHREAD: {
      /* EVIDENCE-OF: R-14374-42468 This option sets the threading mode to
      ** Multi-thread. */
      sqlite3GlobalConfig.bCoreMutex = 1;  /* Enable mutex on core */
      sqlite3GlobalConfig.bFullMutex = 0;  /* Disable mutex on connections */
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-59593-21810 */
    case SQLITE_CONFIG_SERIALIZED: {
      /* EVIDENCE-OF: R-41220-51800 This option sets the threading mode to
      ** Serialized. */
      sqlite3GlobalConfig.bCoreMutex = 1;  /* Enable mutex on core */
      sqlite3GlobalConfig.bFullMutex = 1;  /* Enable mutex on connections */
      break;
    }
#endif
#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 /* IMP: R-63666-48755 */
    case SQLITE_CONFIG_MUTEX: {
      /* Specify an alternative mutex implementation */
      sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*);
................................................................................
/* EVIDENCE-OF: R-06626-12911 The SQLITE_CONFIG_HEAP option is only
** available if SQLite is compiled with either SQLITE_ENABLE_MEMSYS3 or
** SQLITE_ENABLE_MEMSYS5 and returns SQLITE_ERROR if invoked otherwise. */
#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5)
    case SQLITE_CONFIG_HEAP: {
      /* EVIDENCE-OF: R-19854-42126 There are three arguments to
      ** SQLITE_CONFIG_HEAP: An 8-byte aligned pointer to the memory, the
      ** number of bytes in the memory buffer, and the minimum allocation size.
      */
      sqlite3GlobalConfig.pHeap = va_arg(ap, void*);
      sqlite3GlobalConfig.nHeap = va_arg(ap, int);
      sqlite3GlobalConfig.mnReq = va_arg(ap, int);

      if( sqlite3GlobalConfig.mnReq<1 ){
        sqlite3GlobalConfig.mnReq = 1;
      }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){
................................................................................
      ** negative, then that argument is changed to its compile-time default.
      **
      ** EVIDENCE-OF: R-34993-45031 The maximum allowed mmap size will be
      ** silently truncated if necessary so that it does not exceed the
      ** compile-time maximum mmap size set by the SQLITE_MAX_MMAP_SIZE
      ** compile-time option.
      */
      if( mxMmap<0 || mxMmap>SQLITE_MAX_MMAP_SIZE ){
        mxMmap = SQLITE_MAX_MMAP_SIZE;
      }
      if( szMmap<0 ) szMmap = SQLITE_DEFAULT_MMAP_SIZE;
      if( szMmap>mxMmap) szMmap = mxMmap;
      sqlite3GlobalConfig.mxMmap = mxMmap;
      sqlite3GlobalConfig.szMmap = szMmap;
      break;
    }

................................................................................
    flags |= SQLITE_OPEN_URI;

    for(iIn=0; iIn<nUri; iIn++) nByte += (zUri[iIn]=='&');
    zFile = sqlite3_malloc(nByte);
    if( !zFile ) return SQLITE_NOMEM;

    iIn = 5;
#ifdef SQLITE_ALLOW_URI_AUTHORITY
    if( strncmp(zUri+5, "///", 3)==0 ){
      iIn = 7;
      /* The following condition causes URIs with five leading / characters
      ** like file://///host/path to be converted into UNCs like //host/path.
      ** The correct URI for that UNC has only two or four leading / characters
      ** file://host/path or file:////host/path.  But 5 leading slashes is a 
      ** common error, we are told, so we handle it as a special case. */
      if( strncmp(zUri+7, "///", 3)==0 ){ iIn++; }
    }else if( strncmp(zUri+5, "//localhost/", 12)==0 ){
      iIn = 16;
    }
#else
    /* Discard the scheme and authority segments of the URI. */
    if( zUri[5]=='/' && zUri[6]=='/' ){
      iIn = 7;
      while( zUri[iIn] && zUri[iIn]!='/' ) iIn++;
      if( iIn!=7 && (iIn!=16 || memcmp("localhost", &zUri[7], 9)) ){
        *pzErrMsg = sqlite3_mprintf("invalid uri authority: %.*s", 
            iIn-7, &zUri[7]);
................................................................................
                        sqlite3GlobalConfig.nLookaside);

  sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT);

opendb_out:
  sqlite3_free(zOpen);
  if( db ){
    assert( db->mutex!=0 || isThreadsafe==0
           || sqlite3GlobalConfig.bFullMutex==0 );
    sqlite3_mutex_leave(db->mutex);
  }
  rc = sqlite3_errcode(db);
  assert( db!=0 || rc==SQLITE_NOMEM );
  if( rc==SQLITE_NOMEM ){
    sqlite3_close(db);
    db = 0;
................................................................................
    ** not.
    */
    case SQLITE_TESTCTRL_ISINIT: {
      if( sqlite3GlobalConfig.isInit==0 ) rc = SQLITE_ERROR;
      break;
    }

    /*  sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, db, dbName, onOff, tnum);
    **
    ** This test control is used to create imposter tables.  "db" is a pointer
    ** to the database connection.  dbName is the database name (ex: "main" or
    ** "temp") which will receive the imposter.  "onOff" turns imposter mode on
    ** or off.  "tnum" is the root page of the b-tree to which the imposter
    ** table should connect.
    **
    ** Enable imposter mode only when the schema has already been parsed.  Then
    ** run a single CREATE TABLE statement to construct the imposter table in
    ** the parsed schema.  Then turn imposter mode back off again.
    **
    ** If onOff==0 and tnum>0 then reset the schema for all databases, causing
    ** the schema to be reparsed the next time it is needed.  This has the
    ** effect of erasing all imposter tables.
    */
    case SQLITE_TESTCTRL_IMPOSTER: {
      sqlite3 *db = va_arg(ap, sqlite3*);

  sqlite3_mutex *p;

  switch( iType ){
    case SQLITE_MUTEX_FAST:
    case SQLITE_MUTEX_RECURSIVE: {
      p = sqlite3MallocZero( sizeof(*p) );
      if( p ){
#ifdef SQLITE_DEBUG
        p->id = iType;

#ifdef SQLITE_WIN32_MUTEX_TRACE_DYNAMIC
        p->trace = 1;
#endif
#endif
#if SQLITE_OS_WINRT
        InitializeCriticalSectionEx(&p->mutex, 0, 0);
#else
................................................................................
#ifdef SQLITE_ENABLE_API_ARMOR
      if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){
        (void)SQLITE_MISUSE_BKPT;
        return 0;
      }
#endif
      p = &winMutex_staticMutexes[iType-2];
#ifdef SQLITE_DEBUG
      p->id = iType;

#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC
      p->trace = 1;
#endif
#endif
      break;
    }
  }

  sqlite3_mutex *p;

  switch( iType ){
    case SQLITE_MUTEX_FAST:
    case SQLITE_MUTEX_RECURSIVE: {
      p = sqlite3MallocZero( sizeof(*p) );
      if( p ){

        p->id = iType;
#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_DYNAMIC
        p->trace = 1;
#endif
#endif
#if SQLITE_OS_WINRT
        InitializeCriticalSectionEx(&p->mutex, 0, 0);
#else
................................................................................
#ifdef SQLITE_ENABLE_API_ARMOR
      if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){
        (void)SQLITE_MISUSE_BKPT;
        return 0;
      }
#endif
      p = &winMutex_staticMutexes[iType-2];

      p->id = iType;
#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC
      p->trace = 1;
#endif
#endif
      break;
    }
  }

#  if defined(__APPLE__)
#    define SQLITE_ENABLE_LOCKING_STYLE 1
#  else
#    define SQLITE_ENABLE_LOCKING_STYLE 0
#  endif
#endif

/*
** Define the OS_VXWORKS pre-processor macro to 1 if building on 
** vxworks, or 0 otherwise.
*/
#ifndef OS_VXWORKS
#  if defined(__RTP__) || defined(_WRS_KERNEL)
#    define OS_VXWORKS 1
#  else
#    define OS_VXWORKS 0
#  endif
#endif

/*
** standard include files.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
................................................................................
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
# include <sys/mman.h>
#endif

#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
# include <sys/ioctl.h>
# if OS_VXWORKS
#  include <semaphore.h>
#  include <limits.h>
# else
#  include <sys/file.h>
#  include <sys/param.h>
# endif
#endif /* SQLITE_ENABLE_LOCKING_STYLE */







#if defined(__APPLE__) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
# include <sys/mount.h>
#endif

#ifdef HAVE_UTIME
# include <utime.h>
#endif

................................................................................
# define SQLITE_DEFAULT_PROXYDIR_PERMISSIONS 0755
#endif

/*
** Maximum supported path-length.
*/
#define MAX_PATHNAME 512





/*
** Only set the lastErrno if the error code is a real error and not 
** a normal expected return code of SQLITE_BUSY or SQLITE_OK
*/
#define IS_LOCK_ERROR(x)  ((x != SQLITE_OK) && (x != SQLITE_BUSY))

................................................................................
#endif
};

/* This variable holds the process id (pid) from when the xRandomness()
** method was called.  If xOpen() is called from a different process id,
** indicating that a fork() has occurred, the PRNG will be reset.
*/
static int randomnessPid = 0;

/*
** Allowed values for the unixFile.ctrlFlags bitmask:
*/
#define UNIXFILE_EXCL        0x01     /* Connections from one process only */
#define UNIXFILE_RDONLY      0x02     /* Connection is read only */
#define UNIXFILE_PERSIST_WAL 0x04     /* Persistent WAL mode */
................................................................................

  { "fcntl",        (sqlite3_syscall_ptr)fcntl,      0  },
#define osFcntl     ((int(*)(int,int,...))aSyscall[7].pCurrent)

  { "read",         (sqlite3_syscall_ptr)read,       0  },
#define osRead      ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent)

#if defined(USE_PREAD) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
  { "pread",        (sqlite3_syscall_ptr)pread,      0  },
#else
  { "pread",        (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPread     ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent)

#if defined(USE_PREAD64)
................................................................................
  { "pread64",      (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPread64   ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent)

  { "write",        (sqlite3_syscall_ptr)write,      0  },
#define osWrite     ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent)

#if defined(USE_PREAD) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS)
  { "pwrite",       (sqlite3_syscall_ptr)pwrite,     0  },
#else
  { "pwrite",       (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPwrite    ((ssize_t(*)(int,const void*,size_t,off_t))\
                    aSyscall[12].pCurrent)

................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int tErrno = 0;

  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
      azFileLock(eFileLock), azFileLock(pFile->eFileLock),
      azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid()));


  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (unix)\n", pFile->h,
................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int rc = SQLITE_OK;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
      pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
      getpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  char *zLockFile = (char *)pFile->lockingContext;
  int rc;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
           pFile->eFileLock, getpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }

................................................................................
** flock() locking is like dot-file locking in that the various
** fine-grain locking levels supported by SQLite are collapsed into
** a single exclusive lock.  In other words, SHARED, RESERVED, and
** PENDING locks are the same thing as an EXCLUSIVE lock.  SQLite
** still works when you do this, but concurrency is reduced since
** only a single process can be reading the database at a time.
**
** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off or if
** compiling for VXWORKS.
*/
#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS

/*
** Retry flock() calls that fail with EINTR
*/
#ifdef EINTR
static int robust_flock(int fd, int op){
  int rc;
................................................................................
** the requested locking level, this routine is a no-op.
*/
static int flockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  
  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
           pFile->eFileLock, getpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................

/*
** This routine checks if there is a RESERVED lock held on the specified
** file by this or any other process. If such a lock is held, set *pResOut
** to a non-zero value otherwise *pResOut is set to zero.  The return value
** is set to SQLITE_OK unless an I/O error occurs during lock checking.
*/
static int semCheckReservedLock(sqlite3_file *id, int *pResOut) {
  int rc = SQLITE_OK;
  int reserved = 0;
  unixFile *pFile = (unixFile*)id;

  SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
  
  assert( pFile );
................................................................................
** lock states in the sqlite3_file structure, but all locks SHARED or
** above are really EXCLUSIVE locks and exclude all other processes from
** access the file.
**
** This routine will only increase a lock.  Use the sqlite3OsUnlock()
** routine to lower a locking level.
*/
static int semLock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;
  int rc = SQLITE_OK;

  /* if we already have a lock, it is exclusive.  
  ** Just adjust level and punt on outta here. */
  if (pFile->eFileLock > NO_LOCK) {
................................................................................
/*
** Lower the locking level on file descriptor pFile to eFileLock.  eFileLock
** must be either NO_LOCK or SHARED_LOCK.
**
** If the locking level of the file descriptor is already at or below
** the requested locking level, this routine is a no-op.
*/
static int semUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;

  assert( pFile );
  assert( pSem );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
           pFile->eFileLock, getpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
  pFile->eFileLock = NO_LOCK;
  return SQLITE_OK;
}

/*
 ** Close a file.
 */
static int semClose(sqlite3_file *id) {
  if( id ){
    unixFile *pFile = (unixFile*)id;
    semUnlock(id, NO_LOCK);
    assert( pFile );
    unixEnterMutex();
    releaseInodeInfo(pFile);
    unixLeaveMutex();
    closeUnixFile(id);
  }
  return SQLITE_OK;
................................................................................
  unixFile *pFile = (unixFile*)id;
  unixInodeInfo *pInode = pFile->pInode;
  afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
  
  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
           azFileLock(eFileLock), azFileLock(pFile->eFileLock),
           azFileLock(pInode->eFileLock), pInode->nShared , getpid()));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (afp)\n", pFile->h,
................................................................................
#ifdef SQLITE_TEST
  int h = pFile->h;
#endif

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock,
           pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
           getpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
/*
** Return the system page size.
**
** This function should not be called directly by other code in this file. 
** Instead, it should be called via macro osGetpagesize().
*/
static int unixGetpagesize(void){


#if defined(_BSD_SOURCE)
  return getpagesize();
#else
  return (int)sysconf(_SC_PAGESIZE);
#endif
}

#endif /* !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 */
................................................................................
        assert( (p->sharedMask & mask)==0 );
        p->exclMask |= mask;
      }
    }
  }
  sqlite3_mutex_leave(pShmNode->mutex);
  OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",
           p->id, getpid(), p->sharedMask, p->exclMask));
  return rc;
}

/*
** Implement a memory barrier or memory fence on shared memory.  
**
** All loads and stores begun before the barrier must complete before
................................................................................
  dotlockClose,             /* xClose method */
  dotlockLock,              /* xLock method */
  dotlockUnlock,            /* xUnlock method */
  dotlockCheckReservedLock, /* xCheckReservedLock method */
  0                         /* xShmMap method */
)

#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS
IOMETHODS(
  flockIoFinder,            /* Finder function name */
  flockIoMethods,           /* sqlite3_io_methods object name */
  1,                        /* shared memory is disabled */
  flockClose,               /* xClose method */
  flockLock,                /* xLock method */
  flockUnlock,              /* xUnlock method */
................................................................................
#endif

#if OS_VXWORKS
IOMETHODS(
  semIoFinder,              /* Finder function name */
  semIoMethods,             /* sqlite3_io_methods object name */
  1,                        /* shared memory is disabled */
  semClose,                 /* xClose method */
  semLock,                  /* xLock method */
  semUnlock,                /* xUnlock method */
  semCheckReservedLock,     /* xCheckReservedLock method */
  0                         /* xShmMap method */
)
#endif

#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
IOMETHODS(
  afpIoFinder,              /* Finder function name */
................................................................................
  }
}
static const sqlite3_io_methods 
  *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl;

#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */

#if OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE
/* 
** This "finder" function attempts to determine the best locking strategy 
** for the database file "filePath".  It then returns the sqlite3_io_methods
** object that implements that strategy.
**
** This is for VXWorks only.
*/
static const sqlite3_io_methods *autolockIoFinderImpl(
  const char *filePath,    /* name of the database file */
  unixFile *pNew           /* the open file object */
){
  struct flock lockInfo;

  if( !filePath ){
    /* If filePath==NULL that means we are dealing with a transient file
................................................................................
  if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
    return &posixIoMethods;
  }else{
    return &semIoMethods;
  }
}
static const sqlite3_io_methods 
  *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl;

#endif /* OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE */

/*
** An abstract type for a pointer to an IO method finder function:
*/
typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*);


................................................................................
  );

  /* Detect a pid change and reset the PRNG.  There is a race condition
  ** here such that two or more threads all trying to open databases at
  ** the same instant might all reset the PRNG.  But multiple resets
  ** are harmless.
  */
  if( randomnessPid!=getpid() ){
    randomnessPid = getpid();
    sqlite3_randomness(0,0);
  }

  memset(p, 0, sizeof(unixFile));

  if( eType==SQLITE_OPEN_MAIN_DB ){
    UnixUnusedFd *pUnused;
................................................................................
  ** in the random seed.
  **
  ** When testing, initializing zBuf[] to zero is all we do.  That means
  ** that we always use the same random number sequence.  This makes the
  ** tests repeatable.
  */
  memset(zBuf, 0, nBuf);
  randomnessPid = getpid();  
#if !defined(SQLITE_TEST)
  {
    int fd, got;
    fd = robust_open("/dev/urandom", O_RDONLY, 0);
    if( fd<0 ){
      time_t t;
      time(&t);
................................................................................
#ifdef LOCKPROXYDIR
  len = strlcpy(lPath, LOCKPROXYDIR, maxLen);
#else
# ifdef _CS_DARWIN_USER_TEMP_DIR
  {
    if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){
      OSTRACE(("GETLOCKPATH  failed %s errno=%d pid=%d\n",
               lPath, errno, getpid()));
      return SQLITE_IOERR_LOCK;
    }
    len = strlcat(lPath, "sqliteplocks", maxLen);    
  }
# else
  len = strlcpy(lPath, "/tmp/", maxLen);
# endif
................................................................................
  dbLen = (int)strlen(dbPath);
  for( i=0; i<dbLen && (i+len+7)<(int)maxLen; i++){
    char c = dbPath[i];
    lPath[i+len] = (c=='/')?'_':c;
  }
  lPath[i+len]='\0';
  strlcat(lPath, ":auto:", maxLen);
  OSTRACE(("GETLOCKPATH  proxy lock path=%s pid=%d\n", lPath, getpid()));
  return SQLITE_OK;
}

/* 
 ** Creates the lock file and any missing directories in lockPath
 */
static int proxyCreateLockPath(const char *lockPath){
................................................................................
         || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
        buf[i]='\0';
        if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
          int err=errno;
          if( err!=EEXIST ) {
            OSTRACE(("CREATELOCKPATH  FAILED creating %s, "
                     "'%s' proxy lock path=%s pid=%d\n",
                     buf, strerror(err), lockPath, getpid()));
            return err;
          }
        }
      }
      start=i+1;
    }
    buf[i] = lockPath[i];
  }
  OSTRACE(("CREATELOCKPATH  proxy lock path=%s pid=%d\n", lockPath, getpid()));
  return 0;
}

/*
** Create a new VFS file descriptor (stored in memory obtained from
** sqlite3_malloc) and open the file named "path" in the file descriptor.
**
................................................................................
    int createConch = 0;
    int hostIdMatch = 0;
    int readLen = 0;
    int tryOldLockPath = 0;
    int forceNewLockPath = 0;
    
    OSTRACE(("TAKECONCH  %d for %s pid=%d\n", conchFile->h,
             (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), getpid()));


    rc = proxyGetHostID(myHostID, &pError);
    if( (rc&0xff)==SQLITE_IOERR ){
      storeLastErrno(pFile, pError);
      goto end_takeconch;
    }
    rc = proxyConchLock(pFile, myHostID, SHARED_LOCK);
................................................................................
  proxyLockingContext *pCtx;  /* The locking context for the proxy lock */
  unixFile *conchFile;        /* Name of the conch file */

  pCtx = (proxyLockingContext *)pFile->lockingContext;
  conchFile = pCtx->conchFile;
  OSTRACE(("RELEASECONCH  %d for %s pid=%d\n", conchFile->h,
           (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), 
           getpid()));
  if( pCtx->conchHeld>0 ){
    rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
  }
  pCtx->conchHeld = 0;
  OSTRACE(("RELEASECONCH  %d %s\n", conchFile->h,
           (rc==SQLITE_OK ? "ok" : "failed")));
  return rc;
................................................................................
  if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){
    lockPath=NULL;
  }else{
    lockPath=(char *)path;
  }
  
  OSTRACE(("TRANSPROXY  %d for %s pid=%d\n", pFile->h,
           (lockPath ? lockPath : ":auto:"), getpid()));

  pCtx = sqlite3_malloc( sizeof(*pCtx) );
  if( pCtx==0 ){
    return SQLITE_NOMEM;
  }
  memset(pCtx, 0, sizeof(*pCtx));

................................................................................
  ** All default VFSes for unix are contained in the following array.
  **
  ** Note that the sqlite3_vfs.pNext field of the VFS object is modified
  ** by the SQLite core when the VFS is registered.  So the following
  ** array cannot be const.
  */
  static sqlite3_vfs aVfs[] = {
#if SQLITE_ENABLE_LOCKING_STYLE && (OS_VXWORKS || defined(__APPLE__))
    UNIXVFS("unix",          autolockIoFinder ),


#else
    UNIXVFS("unix",          posixIoFinder ),
#endif
    UNIXVFS("unix-none",     nolockIoFinder ),
    UNIXVFS("unix-dotfile",  dotlockIoFinder ),
    UNIXVFS("unix-excl",     posixIoFinder ),
#if OS_VXWORKS
    UNIXVFS("unix-namedsem", semIoFinder ),
#endif
#if SQLITE_ENABLE_LOCKING_STYLE
    UNIXVFS("unix-posix",    posixIoFinder ),
#if !OS_VXWORKS

    UNIXVFS("unix-flock",    flockIoFinder ),
#endif
#endif
#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
    UNIXVFS("unix-afp",      afpIoFinder ),
    UNIXVFS("unix-nfs",      nfsIoFinder ),
    UNIXVFS("unix-proxy",    proxyIoFinder ),
#endif
  };

#  if defined(__APPLE__)
#    define SQLITE_ENABLE_LOCKING_STYLE 1
#  else
#    define SQLITE_ENABLE_LOCKING_STYLE 0
#  endif
#endif













/*
** standard include files.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
................................................................................
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#if !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
# include <sys/mman.h>
#endif

#if SQLITE_ENABLE_LOCKING_STYLE
# include <sys/ioctl.h>




# include <sys/file.h>
# include <sys/param.h>

#endif /* SQLITE_ENABLE_LOCKING_STYLE */

#if OS_VXWORKS
# include <sys/ioctl.h>
# include <semaphore.h>
# include <limits.h>
#endif /* OS_VXWORKS */

#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE
# include <sys/mount.h>
#endif

#ifdef HAVE_UTIME
# include <utime.h>
#endif

................................................................................
# define SQLITE_DEFAULT_PROXYDIR_PERMISSIONS 0755
#endif

/*
** Maximum supported path-length.
*/
#define MAX_PATHNAME 512

/* Always cast the getpid() return type for compatibility with
** kernel modules in VxWorks. */
#define osGetpid(X) (pid_t)getpid()

/*
** Only set the lastErrno if the error code is a real error and not 
** a normal expected return code of SQLITE_BUSY or SQLITE_OK
*/
#define IS_LOCK_ERROR(x)  ((x != SQLITE_OK) && (x != SQLITE_BUSY))

................................................................................
#endif
};

/* This variable holds the process id (pid) from when the xRandomness()
** method was called.  If xOpen() is called from a different process id,
** indicating that a fork() has occurred, the PRNG will be reset.
*/
static pid_t randomnessPid = 0;

/*
** Allowed values for the unixFile.ctrlFlags bitmask:
*/
#define UNIXFILE_EXCL        0x01     /* Connections from one process only */
#define UNIXFILE_RDONLY      0x02     /* Connection is read only */
#define UNIXFILE_PERSIST_WAL 0x04     /* Persistent WAL mode */
................................................................................

  { "fcntl",        (sqlite3_syscall_ptr)fcntl,      0  },
#define osFcntl     ((int(*)(int,int,...))aSyscall[7].pCurrent)

  { "read",         (sqlite3_syscall_ptr)read,       0  },
#define osRead      ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent)

#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
  { "pread",        (sqlite3_syscall_ptr)pread,      0  },
#else
  { "pread",        (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPread     ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent)

#if defined(USE_PREAD64)
................................................................................
  { "pread64",      (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPread64   ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent)

  { "write",        (sqlite3_syscall_ptr)write,      0  },
#define osWrite     ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent)

#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE
  { "pwrite",       (sqlite3_syscall_ptr)pwrite,     0  },
#else
  { "pwrite",       (sqlite3_syscall_ptr)0,          0  },
#endif
#define osPwrite    ((ssize_t(*)(int,const void*,size_t,off_t))\
                    aSyscall[12].pCurrent)

................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int tErrno = 0;

  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h,
      azFileLock(eFileLock), azFileLock(pFile->eFileLock),
      azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared,
      osGetpid()));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (unix)\n", pFile->h,
................................................................................
  unixInodeInfo *pInode;
  struct flock lock;
  int rc = SQLITE_OK;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock,
      pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
      osGetpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
static int dotlockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  char *zLockFile = (char *)pFile->lockingContext;
  int rc;

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }

................................................................................
** flock() locking is like dot-file locking in that the various
** fine-grain locking levels supported by SQLite are collapsed into
** a single exclusive lock.  In other words, SHARED, RESERVED, and
** PENDING locks are the same thing as an EXCLUSIVE lock.  SQLite
** still works when you do this, but concurrency is reduced since
** only a single process can be reading the database at a time.
**
** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off

*/
#if SQLITE_ENABLE_LOCKING_STYLE

/*
** Retry flock() calls that fail with EINTR
*/
#ifdef EINTR
static int robust_flock(int fd, int op){
  int rc;
................................................................................
** the requested locking level, this routine is a no-op.
*/
static int flockUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  
  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................

/*
** This routine checks if there is a RESERVED lock held on the specified
** file by this or any other process. If such a lock is held, set *pResOut
** to a non-zero value otherwise *pResOut is set to zero.  The return value
** is set to SQLITE_OK unless an I/O error occurs during lock checking.
*/
static int semXCheckReservedLock(sqlite3_file *id, int *pResOut) {
  int rc = SQLITE_OK;
  int reserved = 0;
  unixFile *pFile = (unixFile*)id;

  SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
  
  assert( pFile );
................................................................................
** lock states in the sqlite3_file structure, but all locks SHARED or
** above are really EXCLUSIVE locks and exclude all other processes from
** access the file.
**
** This routine will only increase a lock.  Use the sqlite3OsUnlock()
** routine to lower a locking level.
*/
static int semXLock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;
  int rc = SQLITE_OK;

  /* if we already have a lock, it is exclusive.  
  ** Just adjust level and punt on outta here. */
  if (pFile->eFileLock > NO_LOCK) {
................................................................................
/*
** Lower the locking level on file descriptor pFile to eFileLock.  eFileLock
** must be either NO_LOCK or SHARED_LOCK.
**
** If the locking level of the file descriptor is already at or below
** the requested locking level, this routine is a no-op.
*/
static int semXUnlock(sqlite3_file *id, int eFileLock) {
  unixFile *pFile = (unixFile*)id;
  sem_t *pSem = pFile->pInode->pSem;

  assert( pFile );
  assert( pSem );
  OSTRACE(("UNLOCK  %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock,
           pFile->eFileLock, osGetpid()));
  assert( eFileLock<=SHARED_LOCK );
  
  /* no-op if possible */
  if( pFile->eFileLock==eFileLock ){
    return SQLITE_OK;
  }
  
................................................................................
  pFile->eFileLock = NO_LOCK;
  return SQLITE_OK;
}

/*
 ** Close a file.
 */
static int semXClose(sqlite3_file *id) {
  if( id ){
    unixFile *pFile = (unixFile*)id;
    semXUnlock(id, NO_LOCK);
    assert( pFile );
    unixEnterMutex();
    releaseInodeInfo(pFile);
    unixLeaveMutex();
    closeUnixFile(id);
  }
  return SQLITE_OK;
................................................................................
  unixFile *pFile = (unixFile*)id;
  unixInodeInfo *pInode = pFile->pInode;
  afpLockingContext *context = (afpLockingContext *) pFile->lockingContext;
  
  assert( pFile );
  OSTRACE(("LOCK    %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h,
           azFileLock(eFileLock), azFileLock(pFile->eFileLock),
           azFileLock(pInode->eFileLock), pInode->nShared , osGetpid()));

  /* If there is already a lock of this type or more restrictive on the
  ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as
  ** unixEnterMutex() hasn't been called yet.
  */
  if( pFile->eFileLock>=eFileLock ){
    OSTRACE(("LOCK    %d %s ok (already held) (afp)\n", pFile->h,
................................................................................
#ifdef SQLITE_TEST
  int h = pFile->h;
#endif

  assert( pFile );
  OSTRACE(("UNLOCK  %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock,
           pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared,
           osGetpid()));

  assert( eFileLock<=SHARED_LOCK );
  if( pFile->eFileLock<=eFileLock ){
    return SQLITE_OK;
  }
  unixEnterMutex();
  pInode = pFile->pInode;
................................................................................
/*
** Return the system page size.
**
** This function should not be called directly by other code in this file. 
** Instead, it should be called via macro osGetpagesize().
*/
static int unixGetpagesize(void){
#if OS_VXWORKS
  return 1024;
#elif defined(_BSD_SOURCE)
  return getpagesize();
#else
  return (int)sysconf(_SC_PAGESIZE);
#endif
}

#endif /* !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0 */
................................................................................
        assert( (p->sharedMask & mask)==0 );
        p->exclMask |= mask;
      }
    }
  }
  sqlite3_mutex_leave(pShmNode->mutex);
  OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n",
           p->id, osGetpid(), p->sharedMask, p->exclMask));
  return rc;
}

/*
** Implement a memory barrier or memory fence on shared memory.  
**
** All loads and stores begun before the barrier must complete before
................................................................................
  dotlockClose,             /* xClose method */
  dotlockLock,              /* xLock method */
  dotlockUnlock,            /* xUnlock method */
  dotlockCheckReservedLock, /* xCheckReservedLock method */
  0                         /* xShmMap method */
)

#if SQLITE_ENABLE_LOCKING_STYLE
IOMETHODS(
  flockIoFinder,            /* Finder function name */
  flockIoMethods,           /* sqlite3_io_methods object name */
  1,                        /* shared memory is disabled */
  flockClose,               /* xClose method */
  flockLock,                /* xLock method */
  flockUnlock,              /* xUnlock method */
................................................................................
#endif

#if OS_VXWORKS
IOMETHODS(
  semIoFinder,              /* Finder function name */
  semIoMethods,             /* sqlite3_io_methods object name */
  1,                        /* shared memory is disabled */
  semXClose,                /* xClose method */
  semXLock,                 /* xLock method */
  semXUnlock,               /* xUnlock method */
  semXCheckReservedLock,    /* xCheckReservedLock method */
  0                         /* xShmMap method */
)
#endif

#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE
IOMETHODS(
  afpIoFinder,              /* Finder function name */
................................................................................
  }
}
static const sqlite3_io_methods 
  *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl;

#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */

#if OS_VXWORKS
/*
** This "finder" function for VxWorks checks to see if posix advisory
** locking works.  If it does, then that is what is used.  If it does not
** work, then fallback to named semaphore locking.


*/
static const sqlite3_io_methods *vxworksIoFinderImpl(
  const char *filePath,    /* name of the database file */
  unixFile *pNew           /* the open file object */
){
  struct flock lockInfo;

  if( !filePath ){
    /* If filePath==NULL that means we are dealing with a transient file
................................................................................
  if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) {
    return &posixIoMethods;
  }else{
    return &semIoMethods;
  }
}
static const sqlite3_io_methods 
  *(*const vxworksIoFinder)(const char*,unixFile*) = vxworksIoFinderImpl;

#endif /* OS_VXWORKS */

/*
** An abstract type for a pointer to an IO method finder function:
*/
typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*);


................................................................................
  );

  /* Detect a pid change and reset the PRNG.  There is a race condition
  ** here such that two or more threads all trying to open databases at
  ** the same instant might all reset the PRNG.  But multiple resets
  ** are harmless.
  */
  if( randomnessPid!=osGetpid() ){
    randomnessPid = osGetpid();
    sqlite3_randomness(0,0);
  }

  memset(p, 0, sizeof(unixFile));

  if( eType==SQLITE_OPEN_MAIN_DB ){
    UnixUnusedFd *pUnused;
................................................................................
  ** in the random seed.
  **
  ** When testing, initializing zBuf[] to zero is all we do.  That means
  ** that we always use the same random number sequence.  This makes the
  ** tests repeatable.
  */
  memset(zBuf, 0, nBuf);
  randomnessPid = osGetpid();  
#if !defined(SQLITE_TEST)
  {
    int fd, got;
    fd = robust_open("/dev/urandom", O_RDONLY, 0);
    if( fd<0 ){
      time_t t;
      time(&t);
................................................................................
#ifdef LOCKPROXYDIR
  len = strlcpy(lPath, LOCKPROXYDIR, maxLen);
#else
# ifdef _CS_DARWIN_USER_TEMP_DIR
  {
    if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){
      OSTRACE(("GETLOCKPATH  failed %s errno=%d pid=%d\n",
               lPath, errno, osGetpid()));
      return SQLITE_IOERR_LOCK;
    }
    len = strlcat(lPath, "sqliteplocks", maxLen);    
  }
# else
  len = strlcpy(lPath, "/tmp/", maxLen);
# endif
................................................................................
  dbLen = (int)strlen(dbPath);
  for( i=0; i<dbLen && (i+len+7)<(int)maxLen; i++){
    char c = dbPath[i];
    lPath[i+len] = (c=='/')?'_':c;
  }
  lPath[i+len]='\0';
  strlcat(lPath, ":auto:", maxLen);
  OSTRACE(("GETLOCKPATH  proxy lock path=%s pid=%d\n", lPath, osGetpid()));
  return SQLITE_OK;
}

/* 
 ** Creates the lock file and any missing directories in lockPath
 */
static int proxyCreateLockPath(const char *lockPath){
................................................................................
         || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){
        buf[i]='\0';
        if( osMkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){
          int err=errno;
          if( err!=EEXIST ) {
            OSTRACE(("CREATELOCKPATH  FAILED creating %s, "
                     "'%s' proxy lock path=%s pid=%d\n",
                     buf, strerror(err), lockPath, osGetpid()));
            return err;
          }
        }
      }
      start=i+1;
    }
    buf[i] = lockPath[i];
  }
  OSTRACE(("CREATELOCKPATH  proxy lock path=%s pid=%d\n", lockPath, osGetpid()));
  return 0;
}

/*
** Create a new VFS file descriptor (stored in memory obtained from
** sqlite3_malloc) and open the file named "path" in the file descriptor.
**
................................................................................
    int createConch = 0;
    int hostIdMatch = 0;
    int readLen = 0;
    int tryOldLockPath = 0;
    int forceNewLockPath = 0;
    
    OSTRACE(("TAKECONCH  %d for %s pid=%d\n", conchFile->h,
             (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"),
             osGetpid()));

    rc = proxyGetHostID(myHostID, &pError);
    if( (rc&0xff)==SQLITE_IOERR ){
      storeLastErrno(pFile, pError);
      goto end_takeconch;
    }
    rc = proxyConchLock(pFile, myHostID, SHARED_LOCK);
................................................................................
  proxyLockingContext *pCtx;  /* The locking context for the proxy lock */
  unixFile *conchFile;        /* Name of the conch file */

  pCtx = (proxyLockingContext *)pFile->lockingContext;
  conchFile = pCtx->conchFile;
  OSTRACE(("RELEASECONCH  %d for %s pid=%d\n", conchFile->h,
           (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), 
           osGetpid()));
  if( pCtx->conchHeld>0 ){
    rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK);
  }
  pCtx->conchHeld = 0;
  OSTRACE(("RELEASECONCH  %d %s\n", conchFile->h,
           (rc==SQLITE_OK ? "ok" : "failed")));
  return rc;
................................................................................
  if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){
    lockPath=NULL;
  }else{
    lockPath=(char *)path;
  }
  
  OSTRACE(("TRANSPROXY  %d for %s pid=%d\n", pFile->h,
           (lockPath ? lockPath : ":auto:"), osGetpid()));

  pCtx = sqlite3_malloc( sizeof(*pCtx) );
  if( pCtx==0 ){
    return SQLITE_NOMEM;
  }
  memset(pCtx, 0, sizeof(*pCtx));

................................................................................
  ** All default VFSes for unix are contained in the following array.
  **
  ** Note that the sqlite3_vfs.pNext field of the VFS object is modified
  ** by the SQLite core when the VFS is registered.  So the following
  ** array cannot be const.
  */
  static sqlite3_vfs aVfs[] = {
#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
    UNIXVFS("unix",          autolockIoFinder ),
#elif OS_VXWORKS
    UNIXVFS("unix",          vxworksIoFinder ),
#else
    UNIXVFS("unix",          posixIoFinder ),
#endif
    UNIXVFS("unix-none",     nolockIoFinder ),
    UNIXVFS("unix-dotfile",  dotlockIoFinder ),
    UNIXVFS("unix-excl",     posixIoFinder ),
#if OS_VXWORKS
    UNIXVFS("unix-namedsem", semIoFinder ),
#endif
#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
    UNIXVFS("unix-posix",    posixIoFinder ),
#endif
#if SQLITE_ENABLE_LOCKING_STYLE
    UNIXVFS("unix-flock",    flockIoFinder ),

#endif
#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__)
    UNIXVFS("unix-afp",      afpIoFinder ),
    UNIXVFS("unix-nfs",      nfsIoFinder ),
    UNIXVFS("unix-proxy",    proxyIoFinder ),
#endif
  };

      p->pCache->pPage1 = 0;
    }
    sqlite3GlobalConfig.pcache2.xUnpin(p->pCache->pCache, p->pPage, 0);
  }
}

/*
** Compute the number of pages of cache requested.



*/
static int numberOfCachePages(PCache *p){
  if( p->szCache>=0 ){


    return p->szCache;
  }else{



    return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra));
  }
}

/*************************************************** General Interfaces ******
**
** Initialize and shutdown the page cache subsystem. Neither of these 

      p->pCache->pPage1 = 0;
    }
    sqlite3GlobalConfig.pcache2.xUnpin(p->pCache->pCache, p->pPage, 0);
  }
}

/*
** Compute the number of pages of cache requested.  p->szCache is the
** cache size requested by the "PRAGMA cache_size" statement.
**
**
*/
static int numberOfCachePages(PCache *p){
  if( p->szCache>=0 ){
    /* IMPLEMENTATION-OF: R-42059-47211 If the argument N is positive then the
    ** suggested cache size is set to N. */
    return p->szCache;
  }else{
    /* IMPLEMENTATION-OF: R-61436-13639 If the argument N is negative, then
    ** the number of cache pages is adjusted to use approximately abs(N*1024)
    ** bytes of memory. */
    return (int)((-1024*(i64)p->szCache)/(p->szPage+p->szExtra));
  }
}

/*************************************************** General Interfaces ******
**
** Initialize and shutdown the page cache subsystem. Neither of these 

  if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
    goto pragma_out;
  }

  /* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS
  ** connection.  If it returns SQLITE_OK, then assume that the VFS
  ** handled the pragma and generate a no-op prepared statement.











  */
  aFcntl[0] = 0;
  aFcntl[1] = zLeft;
  aFcntl[2] = zRight;
  aFcntl[3] = 0;
  db->busyHandler.nBusy = 0;
  rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_PRAGMA, (void*)aFcntl);
................................................................................

  case PragTyp_INDEX_INFO: if( zRight ){
    Index *pIdx;
    Table *pTab;
    pIdx = sqlite3FindIndex(db, zRight, zDb);
    if( pIdx ){
      int i;

      int mx = pPragma->iArg ? pIdx->nColumn : pIdx->nKeyCol;








      pTab = pIdx->pTable;
      sqlite3VdbeSetNumCols(v, 6);
      pParse->nMem = 6;
      sqlite3CodeVerifySchema(pParse, iDb);
      sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC);

      sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "desc", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "coll", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "key", SQLITE_STATIC);

      for(i=0; i<mx; i++){
        i16 cnum = pIdx->aiColumn[i];
        sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
        sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2);
        if( cnum<0 ){
          sqlite3VdbeAddOp2(v, OP_Null, 0, 3);
        }else{
          sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
        }

        sqlite3VdbeAddOp2(v, OP_Integer, pIdx->aSortOrder[i], 4);
        sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, pIdx->azColl[i], 0);
        sqlite3VdbeAddOp2(v, OP_Integer, i<pIdx->nKeyCol, 6);

        sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6);
      }
    }
  }
  break;

  case PragTyp_INDEX_LIST: if( zRight ){
    Index *pIdx;
................................................................................
  }
  break;
#endif

  /*
  **  PRAGMA shrink_memory
  **
  ** This pragma attempts to free as much memory as possible from the
  ** current database connection.

  */
  case PragTyp_SHRINK_MEMORY: {
    sqlite3_db_release_memory(db);
    break;
  }

  /*
................................................................................
    break;
  }

  /*
  **   PRAGMA soft_heap_limit
  **   PRAGMA soft_heap_limit = N
  **





  ** Call sqlite3_soft_heap_limit64(N).  Return the result.  If N is omitted,
  ** use -1.
  */
  case PragTyp_SOFT_HEAP_LIMIT: {
    sqlite3_int64 N;
    if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){
      sqlite3_soft_heap_limit64(N);
    }
    returnSingleInt(pParse, "soft_heap_limit",  sqlite3_soft_heap_limit64(-1));

  if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){
    goto pragma_out;
  }

  /* Send an SQLITE_FCNTL_PRAGMA file-control to the underlying VFS
  ** connection.  If it returns SQLITE_OK, then assume that the VFS
  ** handled the pragma and generate a no-op prepared statement.
  **
  ** IMPLEMENTATION-OF: R-12238-55120 Whenever a PRAGMA statement is parsed,
  ** an SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file
  ** object corresponding to the database file to which the pragma
  ** statement refers.
  **
  ** IMPLEMENTATION-OF: R-29875-31678 The argument to the SQLITE_FCNTL_PRAGMA
  ** file control is an array of pointers to strings (char**) in which the
  ** second element of the array is the name of the pragma and the third
  ** element is the argument to the pragma or NULL if the pragma has no
  ** argument.
  */
  aFcntl[0] = 0;
  aFcntl[1] = zLeft;
  aFcntl[2] = zRight;
  aFcntl[3] = 0;
  db->busyHandler.nBusy = 0;
  rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_PRAGMA, (void*)aFcntl);
................................................................................

  case PragTyp_INDEX_INFO: if( zRight ){
    Index *pIdx;
    Table *pTab;
    pIdx = sqlite3FindIndex(db, zRight, zDb);
    if( pIdx ){
      int i;
      int mx;
      if( pPragma->iArg ){
        /* PRAGMA index_xinfo (newer version with more rows and columns) */
        mx = pIdx->nColumn;
        pParse->nMem = 6;
      }else{
        /* PRAGMA index_info (legacy version) */
        mx = pIdx->nKeyCol;
        pParse->nMem = 3;
      }
      pTab = pIdx->pTable;
      sqlite3VdbeSetNumCols(v, pParse->nMem);

      sqlite3CodeVerifySchema(pParse, iDb);
      sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC);
      sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC);
      if( pPragma->iArg ){
        sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "desc", SQLITE_STATIC);
        sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "coll", SQLITE_STATIC);
        sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "key", SQLITE_STATIC);
      }
      for(i=0; i<mx; i++){
        i16 cnum = pIdx->aiColumn[i];
        sqlite3VdbeAddOp2(v, OP_Integer, i, 1);
        sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2);
        if( cnum<0 ){
          sqlite3VdbeAddOp2(v, OP_Null, 0, 3);
        }else{
          sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0);
        }
        if( pPragma->iArg ){
          sqlite3VdbeAddOp2(v, OP_Integer, pIdx->aSortOrder[i], 4);
          sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, pIdx->azColl[i], 0);
          sqlite3VdbeAddOp2(v, OP_Integer, i<pIdx->nKeyCol, 6);
        }
        sqlite3VdbeAddOp2(v, OP_ResultRow, 1, pParse->nMem);
      }
    }
  }
  break;

  case PragTyp_INDEX_LIST: if( zRight ){
    Index *pIdx;
................................................................................
  }
  break;
#endif

  /*
  **  PRAGMA shrink_memory
  **
  ** IMPLEMENTATION-OF: R-23445-46109 This pragma causes the database
  ** connection on which it is invoked to free up as much memory as it
  ** can, by calling sqlite3_db_release_memory().
  */
  case PragTyp_SHRINK_MEMORY: {
    sqlite3_db_release_memory(db);
    break;
  }

  /*
................................................................................
    break;
  }

  /*
  **   PRAGMA soft_heap_limit
  **   PRAGMA soft_heap_limit = N
  **
  ** IMPLEMENTATION-OF: R-26343-45930 This pragma invokes the
  ** sqlite3_soft_heap_limit64() interface with the argument N, if N is
  ** specified and is a non-negative integer.
  ** IMPLEMENTATION-OF: R-64451-07163 The soft_heap_limit pragma always
  ** returns the same integer that would be returned by the
  ** sqlite3_soft_heap_limit64(-1) C-language function.

  */
  case PragTyp_SOFT_HEAP_LIMIT: {
    sqlite3_int64 N;
    if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){
      sqlite3_soft_heap_limit64(N);
    }
    returnSingleInt(pParse, "soft_heap_limit",  sqlite3_soft_heap_limit64(-1));

  if( pSort->sortFlags & SORTFLAG_UseSorter ){
    op = OP_SorterInsert;
  }else{
    op = OP_IdxInsert;
  }
  sqlite3VdbeAddOp2(v, op, pSort->iECursor, regRecord);
  if( pSelect->iLimit ){
    int addr1, addr2;
    int iLimit;
    if( pSelect->iOffset ){
      iLimit = pSelect->iOffset+1;
    }else{
      iLimit = pSelect->iLimit;
    }
    addr1 = sqlite3VdbeAddOp1(v, OP_IfZero, iLimit); VdbeCoverage(v);
    sqlite3VdbeAddOp2(v, OP_AddImm, iLimit, -1);
    addr2 = sqlite3VdbeAddOp0(v, OP_Goto);
    sqlite3VdbeJumpHere(v, addr1);
    sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor);
    sqlite3VdbeAddOp1(v, OP_Delete, pSort->iECursor);
    sqlite3VdbeJumpHere(v, addr2);
  }
}

/*
** Add code to implement the OFFSET
*/
static void codeOffset(
................................................................................
  }

  /* Jump to the end of the loop if the LIMIT is reached.  Except, if
  ** there is a sorter, in which case the sorter has already limited
  ** the output for us.
  */
  if( pSort==0 && p->iLimit ){
    sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); VdbeCoverage(v);
  }
}

/*
** Allocate a KeyInfo object sufficient for an index of N key columns and
** X extra columns.
*/
................................................................................
      }else if( n>=0 && p->nSelectRow>(u64)n ){
        p->nSelectRow = n;
      }
    }else{
      sqlite3ExprCode(pParse, p->pLimit, iLimit);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v);
      VdbeComment((v, "LIMIT counter"));
      sqlite3VdbeAddOp2(v, OP_IfZero, iLimit, iBreak); VdbeCoverage(v);
    }
    if( p->pOffset ){
      p->iOffset = iOffset = ++pParse->nMem;
      pParse->nMem++;   /* Allocate an extra register for limit+offset */
      sqlite3ExprCode(pParse, p->pOffset, iOffset);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v);
      VdbeComment((v, "OFFSET counter"));
................................................................................

  /* Output the single row in Current */
  addrCont = sqlite3VdbeMakeLabel(v);
  codeOffset(v, regOffset, addrCont);
  selectInnerLoop(pParse, p, p->pEList, iCurrent,
      0, 0, pDest, addrCont, addrBreak);
  if( regLimit ){
    sqlite3VdbeAddOp3(v, OP_IfZero, regLimit, addrBreak, -1);
    VdbeCoverage(v);
  }
  sqlite3VdbeResolveLabel(v, addrCont);

  /* Execute the recursive SELECT taking the single row in Current as
  ** the value for the recursive-table. Store the results in the Queue.
  */
................................................................................
      if( rc ){
        goto multi_select_end;
      }
      p->pPrior = 0;
      p->iLimit = pPrior->iLimit;
      p->iOffset = pPrior->iOffset;
      if( p->iLimit ){
        addr = sqlite3VdbeAddOp1(v, OP_IfZero, p->iLimit); VdbeCoverage(v);
        VdbeComment((v, "Jump ahead if LIMIT reached"));
      }
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &dest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
................................................................................
      break;
    }
  }

  /* Jump to the end of the loop if the LIMIT is reached.
  */
  if( p->iLimit ){
    sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); VdbeCoverage(v);
  }

  /* Generate the subroutine return
  */
  sqlite3VdbeResolveLabel(v, iContinue);
  sqlite3VdbeAddOp1(v, OP_Return, regReturn);

  if( pSort->sortFlags & SORTFLAG_UseSorter ){
    op = OP_SorterInsert;
  }else{
    op = OP_IdxInsert;
  }
  sqlite3VdbeAddOp2(v, op, pSort->iECursor, regRecord);
  if( pSelect->iLimit ){
    int addr;
    int iLimit;
    if( pSelect->iOffset ){
      iLimit = pSelect->iOffset+1;
    }else{
      iLimit = pSelect->iLimit;
    }
    addr = sqlite3VdbeAddOp3(v, OP_IfNotZero, iLimit, 0, -1); VdbeCoverage(v);



    sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor);
    sqlite3VdbeAddOp1(v, OP_Delete, pSort->iECursor);
    sqlite3VdbeJumpHere(v, addr);
  }
}

/*
** Add code to implement the OFFSET
*/
static void codeOffset(
................................................................................
  }

  /* Jump to the end of the loop if the LIMIT is reached.  Except, if
  ** there is a sorter, in which case the sorter has already limited
  ** the output for us.
  */
  if( pSort==0 && p->iLimit ){
    sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v);
  }
}

/*
** Allocate a KeyInfo object sufficient for an index of N key columns and
** X extra columns.
*/
................................................................................
      }else if( n>=0 && p->nSelectRow>(u64)n ){
        p->nSelectRow = n;
      }
    }else{
      sqlite3ExprCode(pParse, p->pLimit, iLimit);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); VdbeCoverage(v);
      VdbeComment((v, "LIMIT counter"));
      sqlite3VdbeAddOp2(v, OP_IfNot, iLimit, iBreak); VdbeCoverage(v);
    }
    if( p->pOffset ){
      p->iOffset = iOffset = ++pParse->nMem;
      pParse->nMem++;   /* Allocate an extra register for limit+offset */
      sqlite3ExprCode(pParse, p->pOffset, iOffset);
      sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v);
      VdbeComment((v, "OFFSET counter"));
................................................................................

  /* Output the single row in Current */
  addrCont = sqlite3VdbeMakeLabel(v);
  codeOffset(v, regOffset, addrCont);
  selectInnerLoop(pParse, p, p->pEList, iCurrent,
      0, 0, pDest, addrCont, addrBreak);
  if( regLimit ){
    sqlite3VdbeAddOp2(v, OP_DecrJumpZero, regLimit, addrBreak);
    VdbeCoverage(v);
  }
  sqlite3VdbeResolveLabel(v, addrCont);

  /* Execute the recursive SELECT taking the single row in Current as
  ** the value for the recursive-table. Store the results in the Queue.
  */
................................................................................
      if( rc ){
        goto multi_select_end;
      }
      p->pPrior = 0;
      p->iLimit = pPrior->iLimit;
      p->iOffset = pPrior->iOffset;
      if( p->iLimit ){
        addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v);
        VdbeComment((v, "Jump ahead if LIMIT reached"));
      }
      explainSetInteger(iSub2, pParse->iNextSelectId);
      rc = sqlite3Select(pParse, p, &dest);
      testcase( rc!=SQLITE_OK );
      pDelete = p->pPrior;
      p->pPrior = pPrior;
................................................................................
      break;
    }
  }

  /* Jump to the end of the loop if the LIMIT is reached.
  */
  if( p->iLimit ){
    sqlite3VdbeAddOp2(v, OP_DecrJumpZero, p->iLimit, iBreak); VdbeCoverage(v);
  }

  /* Generate the subroutine return
  */
  sqlite3VdbeResolveLabel(v, iContinue);
  sqlite3VdbeAddOp1(v, OP_Return, regReturn);

/*
** If requested, include the SQLite compiler options file for MSVC.
*/
#if defined(INCLUDE_MSVC_H)
#include "msvc.h"
#endif








/*
** Enable large-file support for fopen() and friends on unix.
*/
#ifndef SQLITE_DISABLE_LFS
# define _LARGE_FILE       1
# ifndef _FILE_OFFSET_BITS
#   define _FILE_OFFSET_BITS 64
................................................................................
#undef pclose
#define pclose _pclose
#else
/* Make sure isatty() has a prototype.
*/
extern int isatty(int);


/* popen and pclose are not C89 functions and so are sometimes omitted from
** the <stdio.h> header */
extern FILE *popen(const char*,const char*);
extern int pclose(FILE*);




#endif

#if defined(_WIN32_WCE)
/* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty()
 * thus we always assume that we have a console. That can be
 * overridden with the -batch command line option.
 */
................................................................................
    double r;
    clockVfs->xCurrentTime(clockVfs, &r);
    t = (sqlite3_int64)(r*86400000.0);
  }
  return t;
}

#if !defined(_WIN32) && !defined(WIN32) && !defined(_WRS_KERNEL) \
 && !defined(__minux)
#include <sys/time.h>
#include <sys/resource.h>










/* Saved resource information for the beginning of an operation */
static struct rusage sBegin;  /* CPU time at start */
static sqlite3_int64 iBegin;  /* Wall-clock time at start */

/*
** Begin timing an operation
................................................................................
}

/*
** Print the timing results.
*/
static void endTimer(void){
  if( enableTimer ){
    struct rusage sEnd;
    sqlite3_int64 iEnd = timeOfDay();

    getrusage(RUSAGE_SELF, &sEnd);
    printf("Run Time: real %.3f user %f sys %f\n",
       (iEnd - iBegin)*0.001,
       timeDiff(&sBegin.ru_utime, &sEnd.ru_utime),
       timeDiff(&sBegin.ru_stime, &sEnd.ru_stime));
  }
}
................................................................................
}

/*
** Change the output file back to stdout
*/
static void output_reset(ShellState *p){
  if( p->outfile[0]=='|' ){

    pclose(p->out);

  }else{
    output_file_close(p->out);
  }
  p->outfile[0] = 0;
  p->out = stdout;
}

................................................................................
      fprintf(stderr, "Error: multi-character row separators not allowed"
                      " for import\n");
      return 1;
    }
    sCtx.zFile = zFile;
    sCtx.nLine = 1;
    if( sCtx.zFile[0]=='|' ){




      sCtx.in = popen(sCtx.zFile+1, "r");
      sCtx.zFile = "<pipe>";
      xCloser = pclose;

    }else{
      sCtx.in = fopen(sCtx.zFile, "rb");
      xCloser = fclose;
    }
    if( p->mode==MODE_Ascii ){
      xRead = ascii_read_one_field;
    }else{
................................................................................
      }
      p->outCount = 2;
    }else{
      p->outCount = 0;
    }
    output_reset(p);
    if( zFile[0]=='|' ){





      p->out = popen(zFile + 1, "w");
      if( p->out==0 ){
        fprintf(stderr,"Error: cannot open pipe \"%s\"\n", zFile + 1);
        p->out = stdout;
        rc = 1;
      }else{
        sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile);
      }

    }else{
      p->out = output_file_open(zFile);
      if( p->out==0 ){
        if( strcmp(zFile,"off")!=0 ){
          fprintf(stderr,"Error: cannot write to \"%s\"\n", zFile);
        }
        p->out = stdout;
................................................................................

/*
** Read input from the file given by sqliterc_override.  Or if that
** parameter is NULL, take input from ~/.sqliterc
**
** Returns the number of errors.
*/
static int process_sqliterc(
  ShellState *p,                  /* Configuration data */
  const char *sqliterc_override   /* Name of config file. NULL to use default */
){
  char *home_dir = NULL;
  const char *sqliterc = sqliterc_override;
  char *zBuf = 0;
  FILE *in = NULL;
  int rc = 0;

  if (sqliterc == NULL) {
    home_dir = find_home_dir();
    if( home_dir==0 ){
#if !defined(__RTP__) && !defined(_WRS_KERNEL)
      fprintf(stderr,"%s: Error: cannot locate your home directory\n", Argv0);
#endif
      return 1;
    }
    sqlite3_initialize();
    zBuf = sqlite3_mprintf("%s/.sqliterc",home_dir);
    sqliterc = zBuf;
  }
  in = fopen(sqliterc,"rb");
  if( in ){
    if( stdin_is_interactive ){
      fprintf(stderr,"-- Loading resources from %s\n",sqliterc);
    }
    rc = process_input(p,in);
    fclose(in);
  }
  sqlite3_free(zBuf);
  return rc;
}

/*
** Show available command line options
*/
static const char zOptions[] = 
  "   -ascii               set output mode to 'ascii'\n"
................................................................................
    open_db(&data, 0);
  }

  /* Process the initialization file if there is one.  If no -init option
  ** is given on the command line, look for a file named ~/.sqliterc and
  ** try to process it.
  */
  rc = process_sqliterc(&data,zInitFile);
  if( rc>0 ){
    return rc;
  }

  /* Make a second pass through the command-line argument and set
  ** options.  This second pass is delayed until after the initialization
  ** file is processed so that the command-line arguments will override
  ** settings in the initialization file.
  */
  for(i=1; i<argc; i++){

/*
** If requested, include the SQLite compiler options file for MSVC.
*/
#if defined(INCLUDE_MSVC_H)
#include "msvc.h"
#endif

/*
** No support for loadable extensions in VxWorks.
*/
#if defined(_WRS_KERNEL) && !SQLITE_OMIT_LOAD_EXTENSION
# define SQLITE_OMIT_LOAD_EXTENSION 1
#endif

/*
** Enable large-file support for fopen() and friends on unix.
*/
#ifndef SQLITE_DISABLE_LFS
# define _LARGE_FILE       1
# ifndef _FILE_OFFSET_BITS
#   define _FILE_OFFSET_BITS 64
................................................................................
#undef pclose
#define pclose _pclose
#else
/* Make sure isatty() has a prototype.
*/
extern int isatty(int);

#if !defined(__RTP__) && !defined(_WRS_KERNEL)
  /* popen and pclose are not C89 functions and so are sometimes omitted from
  ** the <stdio.h> header */
  extern FILE *popen(const char*,const char*);
  extern int pclose(FILE*);
#else
# define SQLITE_OMIT_POPEN 1
#endif

#endif

#if defined(_WIN32_WCE)
/* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty()
 * thus we always assume that we have a console. That can be
 * overridden with the -batch command line option.
 */
................................................................................
    double r;
    clockVfs->xCurrentTime(clockVfs, &r);
    t = (sqlite3_int64)(r*86400000.0);
  }
  return t;
}

#if !defined(_WIN32) && !defined(WIN32) && !defined(__minux)

#include <sys/time.h>
#include <sys/resource.h>

/* VxWorks does not support getrusage() as far as we can determine */
#if defined(_WRS_KERNEL) || defined(__RTP__)
struct rusage {
  struct timeval ru_utime; /* user CPU time used */
  struct timeval ru_stime; /* system CPU time used */
};
#define getrusage(A,B) memset(B,0,sizeof(*B))
#endif

/* Saved resource information for the beginning of an operation */
static struct rusage sBegin;  /* CPU time at start */
static sqlite3_int64 iBegin;  /* Wall-clock time at start */

/*
** Begin timing an operation
................................................................................
}

/*
** Print the timing results.
*/
static void endTimer(void){
  if( enableTimer ){

    sqlite3_int64 iEnd = timeOfDay();
    struct rusage sEnd;
    getrusage(RUSAGE_SELF, &sEnd);
    printf("Run Time: real %.3f user %f sys %f\n",
       (iEnd - iBegin)*0.001,
       timeDiff(&sBegin.ru_utime, &sEnd.ru_utime),
       timeDiff(&sBegin.ru_stime, &sEnd.ru_stime));
  }
}
................................................................................
}

/*
** Change the output file back to stdout
*/
static void output_reset(ShellState *p){
  if( p->outfile[0]=='|' ){
#ifndef SQLITE_OMIT_POPEN
    pclose(p->out);
#endif
  }else{
    output_file_close(p->out);
  }
  p->outfile[0] = 0;
  p->out = stdout;
}

................................................................................
      fprintf(stderr, "Error: multi-character row separators not allowed"
                      " for import\n");
      return 1;
    }
    sCtx.zFile = zFile;
    sCtx.nLine = 1;
    if( sCtx.zFile[0]=='|' ){
#ifdef SQLITE_OMIT_POPEN
      fprintf(stderr, "Error: pipes are not supporte in this OS\n");
      return 1;
#else
      sCtx.in = popen(sCtx.zFile+1, "r");
      sCtx.zFile = "<pipe>";
      xCloser = pclose;
#endif
    }else{
      sCtx.in = fopen(sCtx.zFile, "rb");
      xCloser = fclose;
    }
    if( p->mode==MODE_Ascii ){
      xRead = ascii_read_one_field;
    }else{
................................................................................
      }
      p->outCount = 2;
    }else{
      p->outCount = 0;
    }
    output_reset(p);
    if( zFile[0]=='|' ){
#ifdef SQLITE_OMIT_POPEN
      fprintf(stderr,"Error: pipes are not supported in this OS\n");
      rc = 1;
      p->out = stdout;
#else
      p->out = popen(zFile + 1, "w");
      if( p->out==0 ){
        fprintf(stderr,"Error: cannot open pipe \"%s\"\n", zFile + 1);
        p->out = stdout;
        rc = 1;
      }else{
        sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile);
      }
#endif
    }else{
      p->out = output_file_open(zFile);
      if( p->out==0 ){
        if( strcmp(zFile,"off")!=0 ){
          fprintf(stderr,"Error: cannot write to \"%s\"\n", zFile);
        }
        p->out = stdout;
................................................................................

/*
** Read input from the file given by sqliterc_override.  Or if that
** parameter is NULL, take input from ~/.sqliterc
**
** Returns the number of errors.
*/
static void process_sqliterc(
  ShellState *p,                  /* Configuration data */
  const char *sqliterc_override   /* Name of config file. NULL to use default */
){
  char *home_dir = NULL;
  const char *sqliterc = sqliterc_override;
  char *zBuf = 0;
  FILE *in = NULL;


  if (sqliterc == NULL) {
    home_dir = find_home_dir();
    if( home_dir==0 ){
      fprintf(stderr, "-- warning: cannot find home directory;"
                      " cannot read ~/.sqliterc\n");

      return;
    }
    sqlite3_initialize();
    zBuf = sqlite3_mprintf("%s/.sqliterc",home_dir);
    sqliterc = zBuf;
  }
  in = fopen(sqliterc,"rb");
  if( in ){
    if( stdin_is_interactive ){
      fprintf(stderr,"-- Loading resources from %s\n",sqliterc);
    }
    process_input(p,in);
    fclose(in);
  }
  sqlite3_free(zBuf);

}

/*
** Show available command line options
*/
static const char zOptions[] = 
  "   -ascii               set output mode to 'ascii'\n"
................................................................................
    open_db(&data, 0);
  }

  /* Process the initialization file if there is one.  If no -init option
  ** is given on the command line, look for a file named ~/.sqliterc and
  ** try to process it.
  */
  process_sqliterc(&data,zInitFile);




  /* Make a second pass through the command-line argument and set
  ** options.  This second pass is delayed until after the initialization
  ** file is processed so that the command-line arguments will override
  ** settings in the initialization file.
  */
  for(i=1; i<argc; i++){

** CAPI3REF: Standard File Control Opcodes
** KEYWORDS: {file control opcodes} {file control opcode}
**
** These integer constants are opcodes for the xFileControl method
** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
** interface.
**


** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging.  This
** opcode causes the xFileControl method to write the current state of
** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
** into an integer that the pArg argument points to. This capability
** is used during testing and only needs to be supported when SQLITE_TEST
** is defined.
** <ul>
** <li>[[SQLITE_FCNTL_SIZE_HINT]]
** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS
** layer a hint of how large the database file will grow to be during the
** current transaction.  This hint is not guaranteed to be accurate but it
** is often close.  The underlying VFS might choose to preallocate database
** file space based on this hint in order to help writes to the database
** file run faster.
................................................................................
** of the char** argument point to a string obtained from [sqlite3_mprintf()]
** or the equivalent and that string will become the result of the pragma or
** the error message if the pragma fails. ^If the
** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal 
** [PRAGMA] processing continues.  ^If the [SQLITE_FCNTL_PRAGMA]
** file control returns [SQLITE_OK], then the parser assumes that the
** VFS has handled the PRAGMA itself and the parser generates a no-op


** prepared statement.  ^If the [SQLITE_FCNTL_PRAGMA] file control returns
** any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means
** that the VFS encountered an error while handling the [PRAGMA] and the
** compilation of the PRAGMA fails with an error.  ^The [SQLITE_FCNTL_PRAGMA]
** file control occurs at the beginning of pragma statement analysis and so
** it is able to override built-in [PRAGMA] statements.
**
** <li>[[SQLITE_FCNTL_BUSYHANDLER]]
................................................................................
**
** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
** <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
** <dd>^The SQLITE_CONFIG_WIN32_HEAPSIZE option is only available if SQLite is
** compiled for Windows with the [SQLITE_WIN32_MALLOC] pre-processor macro
** defined. ^SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
** that specifies the maximum size of the created heap.
** </dl>
**
** [[SQLITE_CONFIG_PCACHE_HDRSZ]]
** <dt>SQLITE_CONFIG_PCACHE_HDRSZ
** <dd>^The SQLITE_CONFIG_PCACHE_HDRSZ option takes a single parameter which
** is a pointer to an integer and writes into that integer the number of extra
** bytes per page required for each page in [SQLITE_CONFIG_PAGECACHE].
** The amount of extra space required can change depending on the compiler,
................................................................................
** [sqlite3_open16()].  The database connection must not have been closed.
**
** The second argument, "zSql", is the statement to be compiled, encoded
** as either UTF-8 or UTF-16.  The sqlite3_prepare() and sqlite3_prepare_v2()
** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2()
** use UTF-16.
**
** ^If the nByte argument is less than zero, then zSql is read up to the
** first zero terminator. ^If nByte is non-negative, then it is the maximum
** number of  bytes read from zSql.  ^When nByte is non-negative, the
** zSql string ends at either the first '\000' or '\u0000' character or
** the nByte-th byte, whichever comes first. If the caller knows
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that

** is equal to the number of bytes in the input string <i>including</i>
** the nul-terminator bytes as this saves SQLite from having to
** make a copy of the input string.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql.  These routines only
** compile the first statement in zSql, so *pzTail is left pointing to
** what remains uncompiled.
**
** ^*ppStmt is left pointing to a compiled [prepared statement] that can be
................................................................................
/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated].  In order to maintain
** backwards compatibility with older code, these functions continue 
** to be supported.  However, new applications should avoid
** the use of these functions.  To help encourage people to avoid
** using these functions, we are not going to tell you what they do.
*/
#ifndef SQLITE_OMIT_DEPRECATED
SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*);
SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*);
SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
SQLITE_DEPRECATED int sqlite3_global_recover(void);
SQLITE_DEPRECATED void sqlite3_thread_cleanup(void);
................................................................................
** sqlite3_backup_step() call on the same [sqlite3_backup] object, then
** sqlite3_backup_finish() returns the corresponding [error code].
**
** ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step()
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]]
** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
** up and the total number of pages in the source database file.
** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces
** retrieve these two values, respectively.
**
** ^The values returned by these functions are only updated by
** sqlite3_backup_step(). ^If the source database is modified during a backup
** operation, then the values are not updated to account for any extra
** pages that need to be updated or the size of the source database file


** changing.
**
** <b>Concurrent Usage of Database Handles</b>
**
** ^The source [database connection] may be used by the application for other
** purposes while a backup operation is underway or being initialized.
** ^If SQLite is compiled and configured to support threadsafe database
** connections, then the source database connection may be used concurrently

** CAPI3REF: Standard File Control Opcodes
** KEYWORDS: {file control opcodes} {file control opcode}
**
** These integer constants are opcodes for the xFileControl method
** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
** interface.
**
** <ul>
** <li>[[SQLITE_FCNTL_LOCKSTATE]]
** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging.  This
** opcode causes the xFileControl method to write the current state of
** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
** into an integer that the pArg argument points to. This capability
** is used during testing and is only available when the SQLITE_TEST
** compile-time option is used.
**
** <li>[[SQLITE_FCNTL_SIZE_HINT]]
** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS
** layer a hint of how large the database file will grow to be during the
** current transaction.  This hint is not guaranteed to be accurate but it
** is often close.  The underlying VFS might choose to preallocate database
** file space based on this hint in order to help writes to the database
** file run faster.
................................................................................
** of the char** argument point to a string obtained from [sqlite3_mprintf()]
** or the equivalent and that string will become the result of the pragma or
** the error message if the pragma fails. ^If the
** [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal 
** [PRAGMA] processing continues.  ^If the [SQLITE_FCNTL_PRAGMA]
** file control returns [SQLITE_OK], then the parser assumes that the
** VFS has handled the PRAGMA itself and the parser generates a no-op
** prepared statement if result string is NULL, or that returns a copy
** of the result string if the string is non-NULL.
** ^If the [SQLITE_FCNTL_PRAGMA] file control returns
** any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means
** that the VFS encountered an error while handling the [PRAGMA] and the
** compilation of the PRAGMA fails with an error.  ^The [SQLITE_FCNTL_PRAGMA]
** file control occurs at the beginning of pragma statement analysis and so
** it is able to override built-in [PRAGMA] statements.
**
** <li>[[SQLITE_FCNTL_BUSYHANDLER]]
................................................................................
**
** [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
** <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
** <dd>^The SQLITE_CONFIG_WIN32_HEAPSIZE option is only available if SQLite is
** compiled for Windows with the [SQLITE_WIN32_MALLOC] pre-processor macro
** defined. ^SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
** that specifies the maximum size of the created heap.

**
** [[SQLITE_CONFIG_PCACHE_HDRSZ]]
** <dt>SQLITE_CONFIG_PCACHE_HDRSZ
** <dd>^The SQLITE_CONFIG_PCACHE_HDRSZ option takes a single parameter which
** is a pointer to an integer and writes into that integer the number of extra
** bytes per page required for each page in [SQLITE_CONFIG_PAGECACHE].
** The amount of extra space required can change depending on the compiler,
................................................................................
** [sqlite3_open16()].  The database connection must not have been closed.
**
** The second argument, "zSql", is the statement to be compiled, encoded
** as either UTF-8 or UTF-16.  The sqlite3_prepare() and sqlite3_prepare_v2()
** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2()
** use UTF-16.
**
** ^If the nByte argument is negative, then zSql is read up to the
** first zero terminator. ^If nByte is positive, then it is the
** number of bytes read from zSql.  ^If nByte is zero, then no prepared
** statement is generated.

** If the caller knows that the supplied string is nul-terminated, then

** there is a small performance advantage to passing an nByte parameter that
** is the number of bytes in the input string <i>including</i>
** the nul-terminator.

**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql.  These routines only
** compile the first statement in zSql, so *pzTail is left pointing to
** what remains uncompiled.
**
** ^*ppStmt is left pointing to a compiled [prepared statement] that can be
................................................................................
/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated].  In order to maintain
** backwards compatibility with older code, these functions continue 
** to be supported.  However, new applications should avoid
** the use of these functions.  To encourage programmers to avoid
** these functions, we will not explain what they do.
*/
#ifndef SQLITE_OMIT_DEPRECATED
SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*);
SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*);
SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
SQLITE_DEPRECATED int sqlite3_global_recover(void);
SQLITE_DEPRECATED void sqlite3_thread_cleanup(void);
................................................................................
** sqlite3_backup_step() call on the same [sqlite3_backup] object, then
** sqlite3_backup_finish() returns the corresponding [error code].
**
** ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step()
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
** [[sqlite3_backup_remaining()]] [[sqlite3_backup_pagecount()]]
** <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
**
** ^The sqlite3_backup_remaining() routine returns the number of pages still
** to be backed up at the conclusion of the most recent sqlite3_backup_step().
** ^The sqlite3_backup_pagecount() routine returns the total number of pages
** in the source database at the conclusion of the most recent
** sqlite3_backup_step().

** ^(The values returned by these functions are only updated by
** sqlite3_backup_step(). If the source database is modified in a way that

** changes the size of the source database or the number of pages remaining,
** those changes are not reflected in the output of sqlite3_backup_pagecount()
** and sqlite3_backup_remaining() until after the next
** sqlite3_backup_step().)^
**
** <b>Concurrent Usage of Database Handles</b>
**
** ^The source [database connection] may be used by the application for other
** purposes while a backup operation is underway or being initialized.
** ^If SQLite is compiled and configured to support threadsafe database
** connections, then the source database connection may be used concurrently

** Include the header file used to customize the compiler options for MSVC.
** This should be done first so that it can successfully prevent spurious
** compiler warnings due to subsequent content in this file and other files
** that are included by this file.
*/
#include "msvc.h"






/*
** These #defines should enable >2GB file support on POSIX if the
** underlying operating system supports it.  If the OS lacks
** large file support, or if the OS is windows, these should be no-ops.
**
** Ticket #2739:  The _LARGEFILE_SOURCE macro must appear before any
** system #includes.  Hence, this block of code must be the very first
................................................................................
#define WHERE_ORDERBY_MIN      0x0001 /* ORDER BY processing for min() func */
#define WHERE_ORDERBY_MAX      0x0002 /* ORDER BY processing for max() func */
#define WHERE_ONEPASS_DESIRED  0x0004 /* Want to do one-pass UPDATE/DELETE */
#define WHERE_DUPLICATES_OK    0x0008 /* Ok to return a row more than once */
#define WHERE_OMIT_OPEN_CLOSE  0x0010 /* Table cursors are already open */
#define WHERE_FORCE_TABLE      0x0020 /* Do not use an index-only search */
#define WHERE_ONETABLE_ONLY    0x0040 /* Only code the 1st table in pTabList */
                          /*   0x0080 // not currently used */
#define WHERE_GROUPBY          0x0100 /* pOrderBy is really a GROUP BY */
#define WHERE_DISTINCTBY       0x0200 /* pOrderby is really a DISTINCT clause */
#define WHERE_WANT_DISTINCT    0x0400 /* All output needs to be distinct */
#define WHERE_SORTBYGROUP      0x0800 /* Support sqlite3WhereIsSorted() */
#define WHERE_REOPEN_IDX       0x1000 /* Try to use OP_ReopenIdx */

/* Allowed return values from sqlite3WhereIsDistinct()

** Include the header file used to customize the compiler options for MSVC.
** This should be done first so that it can successfully prevent spurious
** compiler warnings due to subsequent content in this file and other files
** that are included by this file.
*/
#include "msvc.h"

/*
** Special setup for VxWorks
*/
#include "vxworks.h"

/*
** These #defines should enable >2GB file support on POSIX if the
** underlying operating system supports it.  If the OS lacks
** large file support, or if the OS is windows, these should be no-ops.
**
** Ticket #2739:  The _LARGEFILE_SOURCE macro must appear before any
** system #includes.  Hence, this block of code must be the very first
................................................................................
#define WHERE_ORDERBY_MIN      0x0001 /* ORDER BY processing for min() func */
#define WHERE_ORDERBY_MAX      0x0002 /* ORDER BY processing for max() func */
#define WHERE_ONEPASS_DESIRED  0x0004 /* Want to do one-pass UPDATE/DELETE */
#define WHERE_DUPLICATES_OK    0x0008 /* Ok to return a row more than once */
#define WHERE_OMIT_OPEN_CLOSE  0x0010 /* Table cursors are already open */
#define WHERE_FORCE_TABLE      0x0020 /* Do not use an index-only search */
#define WHERE_ONETABLE_ONLY    0x0040 /* Only code the 1st table in pTabList */
#define WHERE_NO_AUTOINDEX     0x0080 /* Disallow automatic indexes */
#define WHERE_GROUPBY          0x0100 /* pOrderBy is really a GROUP BY */
#define WHERE_DISTINCTBY       0x0200 /* pOrderby is really a DISTINCT clause */
#define WHERE_WANT_DISTINCT    0x0400 /* All output needs to be distinct */
#define WHERE_SORTBYGROUP      0x0800 /* Support sqlite3WhereIsSorted() */
#define WHERE_REOPEN_IDX       0x1000 /* Try to use OP_ReopenIdx */

/* Allowed return values from sqlite3WhereIsDistinct()

** The maximum number of arguments to an SQL function.
*/
#ifndef SQLITE_MAX_FUNCTION_ARG
# define SQLITE_MAX_FUNCTION_ARG 127
#endif

/*
** The maximum number of in-memory pages to use for the main database
** table and for temporary tables.  The SQLITE_DEFAULT_CACHE_SIZE





*/
#ifndef SQLITE_DEFAULT_CACHE_SIZE
# define SQLITE_DEFAULT_CACHE_SIZE  2000
#endif
#ifndef SQLITE_DEFAULT_TEMP_CACHE_SIZE
# define SQLITE_DEFAULT_TEMP_CACHE_SIZE  500
#endif

/*
** The default number of frames to accumulate in the log file before
** checkpointing the database in WAL mode.
*/
#ifndef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT
# define SQLITE_DEFAULT_WAL_AUTOCHECKPOINT  1000

** The maximum number of arguments to an SQL function.
*/
#ifndef SQLITE_MAX_FUNCTION_ARG
# define SQLITE_MAX_FUNCTION_ARG 127
#endif

/*
** The suggested maximum number of in-memory pages to use for
** the main database table and for temporary tables.
**
** IMPLEMENTATION-OF: R-31093-59126 The default suggested cache size
** is 2000 pages.
** IMPLEMENTATION-OF: R-48205-43578 The default suggested cache size can be
** altered using the SQLITE_DEFAULT_CACHE_SIZE compile-time options.
*/
#ifndef SQLITE_DEFAULT_CACHE_SIZE
# define SQLITE_DEFAULT_CACHE_SIZE  2000
#endif




/*
** The default number of frames to accumulate in the log file before
** checkpointing the database in WAL mode.
*/
#ifndef SQLITE_DEFAULT_WAL_AUTOCHECKPOINT
# define SQLITE_DEFAULT_WAL_AUTOCHECKPOINT  1000

*/
static void MD5DigestToBase10x8(unsigned char digest[16], char zDigest[50]){
  int i, j;
  unsigned int x;
  for(i=j=0; i<16; i+=2){
    x = digest[i]*256 + digest[i+1];
    if( i>0 ) zDigest[j++] = '-';
    sqlite3_snprintf(16-j, &zDigest[j], "%05u", x);
    j += 5;
  }
  zDigest[j] = 0;
}

/*
** A TCL command for md5.  The argument is the text to be hashed.  The

*/
static void MD5DigestToBase10x8(unsigned char digest[16], char zDigest[50]){
  int i, j;
  unsigned int x;
  for(i=j=0; i<16; i+=2){
    x = digest[i]*256 + digest[i+1];
    if( i>0 ) zDigest[j++] = '-';
    sqlite3_snprintf(50-j, &zDigest[j], "%05u", x);
    j += 5;
  }
  zDigest[j] = 0;
}

/*
** A TCL command for md5.  The argument is the text to be hashed.  The

  LINKVAR( MAX_VDBE_OP );
  LINKVAR( MAX_FUNCTION_ARG );
  LINKVAR( MAX_VARIABLE_NUMBER );
  LINKVAR( MAX_PAGE_SIZE );
  LINKVAR( MAX_PAGE_COUNT );
  LINKVAR( MAX_LIKE_PATTERN_LENGTH );
  LINKVAR( MAX_TRIGGER_DEPTH );
  LINKVAR( DEFAULT_TEMP_CACHE_SIZE );
  LINKVAR( DEFAULT_CACHE_SIZE );
  LINKVAR( DEFAULT_PAGE_SIZE );
  LINKVAR( DEFAULT_FILE_FORMAT );
  LINKVAR( MAX_ATTACHED );
  LINKVAR( MAX_DEFAULT_PAGE_SIZE );
  LINKVAR( MAX_WORKER_THREADS );

  LINKVAR( MAX_VDBE_OP );
  LINKVAR( MAX_FUNCTION_ARG );
  LINKVAR( MAX_VARIABLE_NUMBER );
  LINKVAR( MAX_PAGE_SIZE );
  LINKVAR( MAX_PAGE_COUNT );
  LINKVAR( MAX_LIKE_PATTERN_LENGTH );
  LINKVAR( MAX_TRIGGER_DEPTH );

  LINKVAR( DEFAULT_CACHE_SIZE );
  LINKVAR( DEFAULT_PAGE_SIZE );
  LINKVAR( DEFAULT_FILE_FORMAT );
  LINKVAR( MAX_ATTACHED );
  LINKVAR( MAX_DEFAULT_PAGE_SIZE );
  LINKVAR( MAX_WORKER_THREADS );

    case SQLITE_FCNTL_SIZE_HINT:
    case SQLITE_FCNTL_CHUNK_SIZE:
      /* no-op these */
      rc = SQLITE_OK;
      break;
    case SQLITE_FCNTL_PRAGMA: {
      char **aFcntl = (char**)pArg;







      if( aFcntl[1] && sqlite3_stricmp(aFcntl[1],"multiplex_truncate")==0 ){
        if( aFcntl[2] && aFcntl[2][0] ){
          if( sqlite3_stricmp(aFcntl[2], "on")==0
           || sqlite3_stricmp(aFcntl[2], "1")==0 ){
            pGroup->bTruncate = 1;
          }else
          if( sqlite3_stricmp(aFcntl[2], "off")==0
           || sqlite3_stricmp(aFcntl[2], "0")==0 ){
            pGroup->bTruncate = 0;
          }
        }






        aFcntl[0] = sqlite3_mprintf(pGroup->bTruncate ? "on" : "off");
        rc = SQLITE_OK;
        break;
      }
      /* If the multiplexor does not handle the pragma, pass it through
      ** into the default case. */
    }

    case SQLITE_FCNTL_SIZE_HINT:
    case SQLITE_FCNTL_CHUNK_SIZE:
      /* no-op these */
      rc = SQLITE_OK;
      break;
    case SQLITE_FCNTL_PRAGMA: {
      char **aFcntl = (char**)pArg;
      /*
      ** EVIDENCE-OF: R-29875-31678 The argument to the SQLITE_FCNTL_PRAGMA
      ** file control is an array of pointers to strings (char**) in which the
      ** second element of the array is the name of the pragma and the third
      ** element is the argument to the pragma or NULL if the pragma has no
      ** argument.
      */
      if( aFcntl[1] && sqlite3_stricmp(aFcntl[1],"multiplex_truncate")==0 ){
        if( aFcntl[2] && aFcntl[2][0] ){
          if( sqlite3_stricmp(aFcntl[2], "on")==0
           || sqlite3_stricmp(aFcntl[2], "1")==0 ){
            pGroup->bTruncate = 1;
          }else
          if( sqlite3_stricmp(aFcntl[2], "off")==0
           || sqlite3_stricmp(aFcntl[2], "0")==0 ){
            pGroup->bTruncate = 0;
          }
        }
        /* EVIDENCE-OF: R-27806-26076 The handler for an SQLITE_FCNTL_PRAGMA
        ** file control can optionally make the first element of the char**
        ** argument point to a string obtained from sqlite3_mprintf() or the
        ** equivalent and that string will become the result of the pragma
        ** or the error message if the pragma fails.
        */
        aFcntl[0] = sqlite3_mprintf(pGroup->bTruncate ? "on" : "off");
        rc = SQLITE_OK;
        break;
      }
      /* If the multiplexor does not handle the pragma, pass it through
      ** into the default case. */
    }

}
#endif

/* Opcode: String8 * P2 * P4 *
** Synopsis: r[P2]='P4'
**
** P4 points to a nul terminated UTF-8 string. This opcode is transformed 
** into a String before it is executed for the first time.  During
** this transformation, the length of string P4 is computed and stored
** as the P1 parameter.
*/
case OP_String8: {         /* same as TK_STRING, out2-prerelease */
  assert( pOp->p4.z!=0 );
  pOp->opcode = OP_String;
  pOp->p1 = sqlite3Strlen30(pOp->p4.z);
................................................................................
#endif
  if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){
    goto too_big;
  }
  /* Fall through to the next case, OP_String */
}
  
/* Opcode: String P1 P2 * P4 *
** Synopsis: r[P2]='P4' (len=P1)
**
** The string value P4 of length P1 (bytes) is stored in register P2.





*/
case OP_String: {          /* out2-prerelease */
  assert( pOp->p4.z!=0 );
  pOut->flags = MEM_Str|MEM_Static|MEM_Term;
  pOut->z = pOp->p4.z;
  pOut->n = pOp->p1;
  pOut->enc = encoding;
  UPDATE_MAX_BLOBSIZE(pOut);







  break;
}

/* Opcode: Null P1 P2 P3 * *
** Synopsis:  r[P2..P3]=NULL
**
** Write a NULL into registers P2.  If P3 greater than P2, then also write
................................................................................
      /* Store the current value of the database handles deferred constraint
      ** counter. If the statement transaction needs to be rolled back,
      ** the value of this counter needs to be restored too.  */
      p->nStmtDefCons = db->nDeferredCons;
      p->nStmtDefImmCons = db->nDeferredImmCons;
    }

    /* Gather the schema version number for checking */





    sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta);
    iGen = db->aDb[pOp->p1].pSchema->iGeneration;
  }else{
    iGen = iMeta = 0;
  }
  assert( pOp->p5==0 || pOp->p4type==P4_INT32 );
  if( pOp->p5 && (iMeta!=pOp->p3 || iGen!=pOp->p4.i) ){
................................................................................
  break;
}
#endif /* SQLITE_OMIT_AUTOINCREMENT */

/* Opcode: IfPos P1 P2 * * *
** Synopsis: if r[P1]>0 goto P2
**

** If the value of register P1 is 1 or greater, jump to P2.

**
** It is illegal to use this instruction on a register that does
** not contain an integer.  An assertion fault will result if you try.


*/
case OP_IfPos: {        /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );
  VdbeBranchTaken( pIn1->u.i>0, 2);
  if( pIn1->u.i>0 ){
     pc = pOp->p2 - 1;
................................................................................
  VdbeBranchTaken(pIn1->u.i<0, 2);
  if( pIn1->u.i<0 ){
     pc = pOp->p2 - 1;
  }
  break;
}

/* Opcode: IfZero P1 P2 P3 * *
** Synopsis: r[P1]+=P3, if r[P1]==0 goto P2
**
** The register P1 must contain an integer.  Add literal P3 to the
** value in register P1.  If the result is exactly 0, jump to P2. 

*/
case OP_IfZero: {        /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );


  pIn1->u.i += pOp->p3;















  VdbeBranchTaken(pIn1->u.i==0, 2);
  if( pIn1->u.i==0 ){
     pc = pOp->p2 - 1;
  }
  break;
}



















/* Opcode: AggStep * P2 P3 P4 P5
** Synopsis: accum=r[P3] step(r[P2@P5])
**
** Execute the step function for an aggregate.  The
** function has P5 arguments.   P4 is a pointer to the FuncDef
** structure that specifies the function.  Use register
** P3 as the accumulator.

}
#endif

/* Opcode: String8 * P2 * P4 *
** Synopsis: r[P2]='P4'
**
** P4 points to a nul terminated UTF-8 string. This opcode is transformed 
** into a String opcode before it is executed for the first time.  During
** this transformation, the length of string P4 is computed and stored
** as the P1 parameter.
*/
case OP_String8: {         /* same as TK_STRING, out2-prerelease */
  assert( pOp->p4.z!=0 );
  pOp->opcode = OP_String;
  pOp->p1 = sqlite3Strlen30(pOp->p4.z);
................................................................................
#endif
  if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){
    goto too_big;
  }
  /* Fall through to the next case, OP_String */
}
  
/* Opcode: String P1 P2 P3 P4 P5
** Synopsis: r[P2]='P4' (len=P1)
**
** The string value P4 of length P1 (bytes) is stored in register P2.
**
** If P5!=0 and the content of register P3 is greater than zero, then
** the datatype of the register P2 is converted to BLOB.  The content is
** the same sequence of bytes, it is merely interpreted as a BLOB instead
** of a string, as if it had been CAST.
*/
case OP_String: {          /* out2-prerelease */
  assert( pOp->p4.z!=0 );
  pOut->flags = MEM_Str|MEM_Static|MEM_Term;
  pOut->z = pOp->p4.z;
  pOut->n = pOp->p1;
  pOut->enc = encoding;
  UPDATE_MAX_BLOBSIZE(pOut);
  if( pOp->p5 ){
    assert( pOp->p3>0 );
    assert( pOp->p3<=(p->nMem-p->nCursor) );
    pIn3 = &aMem[pOp->p3];
    assert( pIn3->flags & MEM_Int );
    if( pIn3->u.i ) pOut->flags = MEM_Blob|MEM_Static|MEM_Term;
  }
  break;
}

/* Opcode: Null P1 P2 P3 * *
** Synopsis:  r[P2..P3]=NULL
**
** Write a NULL into registers P2.  If P3 greater than P2, then also write
................................................................................
      /* Store the current value of the database handles deferred constraint
      ** counter. If the statement transaction needs to be rolled back,
      ** the value of this counter needs to be restored too.  */
      p->nStmtDefCons = db->nDeferredCons;
      p->nStmtDefImmCons = db->nDeferredImmCons;
    }

    /* Gather the schema version number for checking:
    ** IMPLEMENTATION-OF: R-32195-19465 The schema version is used by SQLite
    ** each time a query is executed to ensure that the internal cache of the
    ** schema used when compiling the SQL query matches the schema of the
    ** database against which the compiled query is actually executed.
    */
    sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&iMeta);
    iGen = db->aDb[pOp->p1].pSchema->iGeneration;
  }else{
    iGen = iMeta = 0;
  }
  assert( pOp->p5==0 || pOp->p4type==P4_INT32 );
  if( pOp->p5 && (iMeta!=pOp->p3 || iGen!=pOp->p4.i) ){
................................................................................
  break;
}
#endif /* SQLITE_OMIT_AUTOINCREMENT */

/* Opcode: IfPos P1 P2 * * *
** Synopsis: if r[P1]>0 goto P2
**
** Register P1 must contain an integer.
** If the value of register P1 is 1 or greater, jump to P2 and
** add the literal value P3 to register P1.
**


** If the initial value of register P1 is less than 1, then the
** value is unchanged and control passes through to the next instruction.
*/
case OP_IfPos: {        /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );
  VdbeBranchTaken( pIn1->u.i>0, 2);
  if( pIn1->u.i>0 ){
     pc = pOp->p2 - 1;
................................................................................
  VdbeBranchTaken(pIn1->u.i<0, 2);
  if( pIn1->u.i<0 ){
     pc = pOp->p2 - 1;
  }
  break;
}

/* Opcode: IfNotZero P1 P2 P3 * *
** Synopsis: if r[P1]!=0 then r[P1]+=P3, goto P2
**
** Register P1 must contain an integer.  If the content of register P1 is
** initially nonzero, then add P3 to P1 and jump to P2.  If register P1 is
** initially zero, leave it unchanged and fall through.
*/
case OP_IfNotZero: {        /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );
  VdbeBranchTaken(pIn1->u.i<0, 2);
  if( pIn1->u.i ){
     pIn1->u.i += pOp->p3;
     pc = pOp->p2 - 1;
  }
  break;
}

/* Opcode: DecrJumpZero P1 P2 * * *
** Synopsis: if (--r[P1])==0 goto P2
**
** Register P1 must hold an integer.  Decrement the value in register P1
** then jump to P2 if the new value is exactly zero.
*/
case OP_DecrJumpZero: {      /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );
  pIn1->u.i--;
  VdbeBranchTaken(pIn1->u.i==0, 2);
  if( pIn1->u.i==0 ){
     pc = pOp->p2 - 1;
  }
  break;
}


/* Opcode: JumpZeroIncr P1 P2 * * *
** Synopsis: if (r[P1]++)==0 ) goto P2
**
** The register P1 must contain an integer.  If register P1 is initially
** zero, then jump to P2.  Increment register P1 regardless of whether or
** not the jump is taken.
*/
case OP_JumpZeroIncr: {        /* jump, in1 */
  pIn1 = &aMem[pOp->p1];
  assert( pIn1->flags&MEM_Int );
  VdbeBranchTaken(pIn1->u.i==0, 2);
  if( (pIn1->u.i++)==0 ){
     pc = pOp->p2 - 1;
  }
  break;
}

/* Opcode: AggStep * P2 P3 P4 P5
** Synopsis: accum=r[P3] step(r[P2@P5])
**
** Execute the step function for an aggregate.  The
** function has P5 arguments.   P4 is a pointer to the FuncDef
** structure that specifies the function.  Use register
** P3 as the accumulator.

const void *sqlite3_value_text16be(sqlite3_value *pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16BE);
}
const void *sqlite3_value_text16le(sqlite3_value *pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16LE);
}
#endif /* SQLITE_OMIT_UTF16 */




int sqlite3_value_type(sqlite3_value* pVal){
  static const u8 aType[] = {
     SQLITE_BLOB,     /* 0x00 */
     SQLITE_NULL,     /* 0x01 */
     SQLITE_TEXT,     /* 0x02 */
     SQLITE_NULL,     /* 0x03 */
     SQLITE_INTEGER,  /* 0x04 */

const void *sqlite3_value_text16be(sqlite3_value *pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16BE);
}
const void *sqlite3_value_text16le(sqlite3_value *pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16LE);
}
#endif /* SQLITE_OMIT_UTF16 */
/* EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
** fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
** point number string BLOB NULL
*/
int sqlite3_value_type(sqlite3_value* pVal){
  static const u8 aType[] = {
     SQLITE_BLOB,     /* 0x00 */
     SQLITE_NULL,     /* 0x01 */
     SQLITE_TEXT,     /* 0x02 */
     SQLITE_NULL,     /* 0x03 */
     SQLITE_INTEGER,  /* 0x04 */

/*
** 2015-03-02
**
** 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 contains code that is specific to Wind River's VxWorks
*/
#if defined(__RTP__) || defined(_WRS_KERNEL)
/* This is VxWorks.  Set up things specially for that OS
*/
#include <vxWorks.h>
#include <pthread.h>  /* amalgamator: dontcache */
#define OS_VXWORKS 1
#define SQLITE_OS_OTHER 0
#define SQLITE_HOMEGROWN_RECURSIVE_MUTEX 1
#define SQLITE_OMIT_LOAD_EXTENSION 1
#define SQLITE_ENABLE_LOCKING_STYLE 0
#define HAVE_UTIME 1
#else
/* This is not VxWorks. */
#define OS_VXWORKS 0
#endif /* defined(_WRS_KERNEL) */

** This is true even if this routine fails to allocate a new WhereTerm.
**
** WARNING:  This routine might reallocate the space used to store
** WhereTerms.  All pointers to WhereTerms should be invalidated after
** calling this routine.  Such pointers may be reinitialized by referencing
** the pWC->a[] array.
*/
static int whereClauseInsert(WhereClause *pWC, Expr *p, u8 wtFlags){
  WhereTerm *pTerm;
  int idx;
  testcase( wtFlags & TERM_VIRTUAL );
  if( pWC->nTerm>=pWC->nSlot ){
    WhereTerm *pOld = pWC->a;
    sqlite3 *db = pWC->pWInfo->pParse->db;
    pWC->a = sqlite3DbMallocRaw(db, sizeof(pWC->a[0])*pWC->nSlot*2 );
................................................................................
#ifndef SQLITE_OMIT_LIKE_OPTIMIZATION
/*
** Check to see if the given expression is a LIKE or GLOB operator that
** can be optimized using inequality constraints.  Return TRUE if it is
** so and false if not.
**
** In order for the operator to be optimizible, the RHS must be a string
** literal that does not begin with a wildcard.  




*/
static int isLikeOrGlob(
  Parse *pParse,    /* Parsing and code generating context */
  Expr *pExpr,      /* Test this expression */
  Expr **ppPrefix,  /* Pointer to TK_STRING expression with pattern prefix */
  int *pisComplete, /* True if the only wildcard is % in the last character */
  int *pnoCase      /* True if uppercase is equivalent to lowercase */
................................................................................
#ifdef SQLITE_EBCDIC
  if( *pnoCase ) return 0;
#endif
  pList = pExpr->x.pList;
  pLeft = pList->a[1].pExpr;
  if( pLeft->op!=TK_COLUMN 
   || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT 
   || IsVirtual(pLeft->pTab)
  ){
    /* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
    ** be the name of an indexed column with TEXT affinity. */
    return 0;
  }
  assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */

................................................................................
  WhereMaskSet *pMaskSet;          /* Set of table index masks */
  Expr *pExpr;                     /* The expression to be analyzed */
  Bitmask prereqLeft;              /* Prerequesites of the pExpr->pLeft */
  Bitmask prereqAll;               /* Prerequesites of pExpr */
  Bitmask extraRight = 0;          /* Extra dependencies on LEFT JOIN */
  Expr *pStr1 = 0;                 /* RHS of LIKE/GLOB operator */
  int isComplete = 0;              /* RHS of LIKE/GLOB ends with wildcard */
  int noCase = 0;                  /* LIKE/GLOB distinguishes case */
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWInfo->pParse;  /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */

  if( db->mallocFailed ){
    return;
  }
................................................................................
  }
#endif /* SQLITE_OMIT_OR_OPTIMIZATION */

#ifndef SQLITE_OMIT_LIKE_OPTIMIZATION
  /* Add constraints to reduce the search space on a LIKE or GLOB
  ** operator.
  **
  ** A like pattern of the form "x LIKE 'abc%'" is changed into constraints
  **
  **          x>='abc' AND x<'abd' AND x LIKE 'abc%'
  **
  ** The last character of the prefix "abc" is incremented to form the
  ** termination condition "abd".



  */
  if( pWC->op==TK_AND 
   && isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase)
  ){
    Expr *pLeft;       /* LHS of LIKE/GLOB operator */
    Expr *pStr2;       /* Copy of pStr1 - RHS of LIKE/GLOB operator */
    Expr *pNewExpr1;
    Expr *pNewExpr2;
    int idxNew1;
    int idxNew2;
    Token sCollSeqName;  /* Name of collating sequence */


    pLeft = pExpr->x.pList->a[1].pExpr;
    pStr2 = sqlite3ExprDup(db, pStr1, 0);















    if( !db->mallocFailed ){
      u8 c, *pC;       /* Last character before the first wildcard */
      pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1];
      c = *pC;
      if( noCase ){
        /* The point is to increment the last character before the first
        ** wildcard.  But if we increment '@', that will push it into the
................................................................................
        c = sqlite3UpperToLower[c];
      }
      *pC = c + 1;
    }
    sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
    sCollSeqName.n = 6;
    pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr1 = sqlite3PExpr(pParse, TK_GE, 
           sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),
           pStr1, 0);
    transferJoinMarkings(pNewExpr1, pExpr);
    idxNew1 = whereClauseInsert(pWC, pNewExpr1, TERM_VIRTUAL|TERM_DYNAMIC);
    testcase( idxNew1==0 );
    exprAnalyze(pSrc, pWC, idxNew1);
    pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
           sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
           pStr2, 0);
    transferJoinMarkings(pNewExpr2, pExpr);
    idxNew2 = whereClauseInsert(pWC, pNewExpr2, TERM_VIRTUAL|TERM_DYNAMIC);
    testcase( idxNew2==0 );
    exprAnalyze(pSrc, pWC, idxNew2);
    pTerm = &pWC->a[idxTerm];
    if( isComplete ){
      markTermAsChild(pWC, idxNew1, idxTerm);
      markTermAsChild(pWC, idxNew2, idxTerm);
    }
................................................................................
** Disabling a term causes that term to not be tested in the inner loop
** of the join.  Disabling is an optimization.  When terms are satisfied
** by indices, we disable them to prevent redundant tests in the inner
** loop.  We would get the correct results if nothing were ever disabled,
** but joins might run a little slower.  The trick is to disable as much
** as we can without disabling too much.  If we disabled in (1), we'd get
** the wrong answer.  See ticket #813.



















*/
static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){

  if( pTerm
      && (pTerm->wtFlags & TERM_CODED)==0
      && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin))
      && (pLevel->notReady & pTerm->prereqAll)==0
  ){
    pTerm->wtFlags |= TERM_CODED;
    if( pTerm->iParent>=0 ){
      WhereTerm *pOther = &pTerm->pWC->a[pTerm->iParent];
      if( (--pOther->nChild)==0 ){
        disableTerm(pLevel, pOther);
      }
    }



  }
}

/*
** Code an OP_Affinity opcode to apply the column affinity string zAff
** to the n registers starting at base. 
**
................................................................................
      v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj
  );
}
#else
# define addScanStatus(a, b, c, d) ((void)d)
#endif






























/*
** Generate code for the start of the iLevel-th loop in the WHERE clause
** implementation described by pWInfo.
*/
static Bitmask codeOneLoopStart(
  WhereInfo *pWInfo,   /* Complete information about the WHERE clause */
................................................................................
    /* Find any inequality constraint terms for the start and end 
    ** of the range. 
    */
    j = nEq;
    if( pLoop->wsFlags & WHERE_BTM_LIMIT ){
      pRangeStart = pLoop->aLTerm[j++];
      nExtraReg = 1;



    }
    if( pLoop->wsFlags & WHERE_TOP_LIMIT ){
      pRangeEnd = pLoop->aLTerm[j++];
      nExtraReg = 1;












      if( pRangeStart==0
       && (j = pIdx->aiColumn[nEq])>=0 
       && pIdx->pTable->aCol[j].notNull==0
      ){
        bSeekPastNull = 1;
      }
    }
................................................................................
    start_constraints = pRangeStart || nEq>0;

    /* Seek the index cursor to the start of the range. */
    nConstraint = nEq;
    if( pRangeStart ){
      Expr *pRight = pRangeStart->pExpr->pRight;
      sqlite3ExprCode(pParse, pRight, regBase+nEq);

      if( (pRangeStart->wtFlags & TERM_VNULL)==0
       && sqlite3ExprCanBeNull(pRight)
      ){
        sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt);
        VdbeCoverage(v);
      }
      if( zStartAff ){
................................................................................
    ** range (if any).
    */
    nConstraint = nEq;
    if( pRangeEnd ){
      Expr *pRight = pRangeEnd->pExpr->pRight;
      sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
      sqlite3ExprCode(pParse, pRight, regBase+nEq);

      if( (pRangeEnd->wtFlags & TERM_VNULL)==0
       && sqlite3ExprCanBeNull(pRight)
      ){
        sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt);
        VdbeCoverage(v);
      }
      if( sqlite3CompareAffinity(pRight, cEndAff)!=SQLITE_AFF_NONE
................................................................................

    /* Run a separate WHERE clause for each term of the OR clause.  After
    ** eliminating duplicates from other WHERE clauses, the action for each
    ** sub-WHERE clause is to to invoke the main loop body as a subroutine.
    */
    wctrlFlags =  WHERE_OMIT_OPEN_CLOSE
                | WHERE_FORCE_TABLE
                | WHERE_ONETABLE_ONLY;

    for(ii=0; ii<pOrWc->nTerm; ii++){
      WhereTerm *pOrTerm = &pOrWc->a[ii];
      if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
        WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
        Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
        int j1 = 0;                     /* Address of jump operation */
        if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){
................................................................................
#endif

  /* Insert code to test every subexpression that can be completely
  ** computed using the current set of tables.
  */
  for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
    Expr *pE;

    testcase( pTerm->wtFlags & TERM_VIRTUAL );
    testcase( pTerm->wtFlags & TERM_CODED );
    if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue;
    if( (pTerm->prereqAll & pLevel->notReady)!=0 ){
      testcase( pWInfo->untestedTerms==0
               && (pWInfo->wctrlFlags & WHERE_ONETABLE_ONLY)!=0 );
      pWInfo->untestedTerms = 1;
      continue;
    }
    pE = pTerm->pExpr;
    assert( pE!=0 );
    if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){
      continue;
    }





    sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);

    pTerm->wtFlags |= TERM_CODED;
  }

  /* Insert code to test for implied constraints based on transitivity
  ** of the "==" operator.
  **
  ** Example: If the WHERE clause contains "t1.a=t2.b" and "t2.b=123"
................................................................................
    if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0)
     && (iCol<0 || pSrc->pTab->aCol[iCol].notNull)
    ){
      continue; /* ignore IS [NOT] NULL constraints on NOT NULL columns */
    }
    if( pTerm->prereqRight & pNew->maskSelf ) continue;





    pNew->wsFlags = saved_wsFlags;
    pNew->u.btree.nEq = saved_nEq;
    pNew->nLTerm = saved_nLTerm;
    if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */
    pNew->aLTerm[pNew->nLTerm++] = pTerm;
    pNew->prereq = (saved_prereq | pTerm->prereqRight) & ~pNew->maskSelf;

................................................................................
      pNew->wsFlags |= WHERE_COLUMN_NULL;
    }else if( eOp & (WO_GT|WO_GE) ){
      testcase( eOp & WO_GT );
      testcase( eOp & WO_GE );
      pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT;
      pBtm = pTerm;
      pTop = 0;











    }else{
      assert( eOp & (WO_LT|WO_LE) );
      testcase( eOp & WO_LT );
      testcase( eOp & WO_LE );
      pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_TOP_LIMIT;
      pTop = pTerm;
      pBtm = (pNew->wsFlags & WHERE_BTM_LIMIT)!=0 ?
................................................................................
  }
  rSize = pTab->nRowLogEst;
  rLogSize = estLog(rSize);

#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
  /* Automatic indexes */
  if( !pBuilder->pOrSet

   && (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0
   && pSrc->pIndex==0
   && !pSrc->viaCoroutine
   && !pSrc->notIndexed
   && HasRowid(pTab)
   && !pSrc->isCorrelated
   && !pSrc->isRecursive
................................................................................
    }
    sqlite3VdbeResolveLabel(v, pLevel->addrBrk);
    if( pLevel->addrSkip ){
      sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrSkip);
      VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName));
      sqlite3VdbeJumpHere(v, pLevel->addrSkip);
      sqlite3VdbeJumpHere(v, pLevel->addrSkip-2);










    }
    if( pLevel->iLeftJoin ){
      addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v);
      assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0
           || (pLoop->wsFlags & WHERE_INDEXED)!=0 );
      if( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 ){
        sqlite3VdbeAddOp1(v, OP_NullRow, pTabList->a[i].iCursor);

** This is true even if this routine fails to allocate a new WhereTerm.
**
** WARNING:  This routine might reallocate the space used to store
** WhereTerms.  All pointers to WhereTerms should be invalidated after
** calling this routine.  Such pointers may be reinitialized by referencing
** the pWC->a[] array.
*/
static int whereClauseInsert(WhereClause *pWC, Expr *p, u16 wtFlags){
  WhereTerm *pTerm;
  int idx;
  testcase( wtFlags & TERM_VIRTUAL );
  if( pWC->nTerm>=pWC->nSlot ){
    WhereTerm *pOld = pWC->a;
    sqlite3 *db = pWC->pWInfo->pParse->db;
    pWC->a = sqlite3DbMallocRaw(db, sizeof(pWC->a[0])*pWC->nSlot*2 );
................................................................................
#ifndef SQLITE_OMIT_LIKE_OPTIMIZATION
/*
** Check to see if the given expression is a LIKE or GLOB operator that
** can be optimized using inequality constraints.  Return TRUE if it is
** so and false if not.
**
** In order for the operator to be optimizible, the RHS must be a string
** literal that does not begin with a wildcard.  The LHS must be a column
** that may only be NULL, a string, or a BLOB, never a number. (This means
** that virtual tables cannot participate in the LIKE optimization.)  If the
** collating sequence for the column on the LHS must be appropriate for
** the operator.
*/
static int isLikeOrGlob(
  Parse *pParse,    /* Parsing and code generating context */
  Expr *pExpr,      /* Test this expression */
  Expr **ppPrefix,  /* Pointer to TK_STRING expression with pattern prefix */
  int *pisComplete, /* True if the only wildcard is % in the last character */
  int *pnoCase      /* True if uppercase is equivalent to lowercase */
................................................................................
#ifdef SQLITE_EBCDIC
  if( *pnoCase ) return 0;
#endif
  pList = pExpr->x.pList;
  pLeft = pList->a[1].pExpr;
  if( pLeft->op!=TK_COLUMN 
   || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT 
   || IsVirtual(pLeft->pTab)  /* Value might be numeric */
  ){
    /* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
    ** be the name of an indexed column with TEXT affinity. */
    return 0;
  }
  assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */

................................................................................
  WhereMaskSet *pMaskSet;          /* Set of table index masks */
  Expr *pExpr;                     /* The expression to be analyzed */
  Bitmask prereqLeft;              /* Prerequesites of the pExpr->pLeft */
  Bitmask prereqAll;               /* Prerequesites of pExpr */
  Bitmask extraRight = 0;          /* Extra dependencies on LEFT JOIN */
  Expr *pStr1 = 0;                 /* RHS of LIKE/GLOB operator */
  int isComplete = 0;              /* RHS of LIKE/GLOB ends with wildcard */
  int noCase = 0;                  /* uppercase equivalent to lowercase */
  int op;                          /* Top-level operator.  pExpr->op */
  Parse *pParse = pWInfo->pParse;  /* Parsing context */
  sqlite3 *db = pParse->db;        /* Database connection */

  if( db->mallocFailed ){
    return;
  }
................................................................................
  }
#endif /* SQLITE_OMIT_OR_OPTIMIZATION */

#ifndef SQLITE_OMIT_LIKE_OPTIMIZATION
  /* Add constraints to reduce the search space on a LIKE or GLOB
  ** operator.
  **
  ** A like pattern of the form "x LIKE 'aBc%'" is changed into constraints
  **
  **          x>='ABC' AND x<'abd' AND x LIKE 'aBc%'
  **
  ** The last character of the prefix "abc" is incremented to form the
  ** termination condition "abd".  If case is not significant (the default
  ** for LIKE) then the lower-bound is made all uppercase and the upper-
  ** bound is made all lowercase so that the bounds also work when comparing
  ** BLOBs.
  */
  if( pWC->op==TK_AND 
   && isLikeOrGlob(pParse, pExpr, &pStr1, &isComplete, &noCase)
  ){
    Expr *pLeft;       /* LHS of LIKE/GLOB operator */
    Expr *pStr2;       /* Copy of pStr1 - RHS of LIKE/GLOB operator */
    Expr *pNewExpr1;
    Expr *pNewExpr2;
    int idxNew1;
    int idxNew2;
    Token sCollSeqName;  /* Name of collating sequence */
    const u16 wtFlags = TERM_LIKEOPT | TERM_VIRTUAL | TERM_DYNAMIC;

    pLeft = pExpr->x.pList->a[1].pExpr;
    pStr2 = sqlite3ExprDup(db, pStr1, 0);

    /* Convert the lower bound to upper-case and the upper bound to
    ** lower-case (upper-case is less than lower-case in ASCII) so that
    ** the range constraints also work for BLOBs
    */
    if( noCase && !pParse->db->mallocFailed ){
      int i;
      char c;
      pTerm->wtFlags |= TERM_LIKE;
      for(i=0; (c = pStr1->u.zToken[i])!=0; i++){
        pStr1->u.zToken[i] = sqlite3Toupper(c);
        pStr2->u.zToken[i] = sqlite3Tolower(c);
      }
    }

    if( !db->mallocFailed ){
      u8 c, *pC;       /* Last character before the first wildcard */
      pC = (u8*)&pStr2->u.zToken[sqlite3Strlen30(pStr2->u.zToken)-1];
      c = *pC;
      if( noCase ){
        /* The point is to increment the last character before the first
        ** wildcard.  But if we increment '@', that will push it into the
................................................................................
        c = sqlite3UpperToLower[c];
      }
      *pC = c + 1;
    }
    sCollSeqName.z = noCase ? "NOCASE" : "BINARY";
    sCollSeqName.n = 6;
    pNewExpr1 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr1 = sqlite3PExpr(pParse, TK_GE,
           sqlite3ExprAddCollateToken(pParse,pNewExpr1,&sCollSeqName),
           pStr1, 0);
    transferJoinMarkings(pNewExpr1, pExpr);
    idxNew1 = whereClauseInsert(pWC, pNewExpr1, wtFlags);
    testcase( idxNew1==0 );
    exprAnalyze(pSrc, pWC, idxNew1);
    pNewExpr2 = sqlite3ExprDup(db, pLeft, 0);
    pNewExpr2 = sqlite3PExpr(pParse, TK_LT,
           sqlite3ExprAddCollateToken(pParse,pNewExpr2,&sCollSeqName),
           pStr2, 0);
    transferJoinMarkings(pNewExpr2, pExpr);
    idxNew2 = whereClauseInsert(pWC, pNewExpr2, wtFlags);
    testcase( idxNew2==0 );
    exprAnalyze(pSrc, pWC, idxNew2);
    pTerm = &pWC->a[idxTerm];
    if( isComplete ){
      markTermAsChild(pWC, idxNew1, idxTerm);
      markTermAsChild(pWC, idxNew2, idxTerm);
    }
................................................................................
** Disabling a term causes that term to not be tested in the inner loop
** of the join.  Disabling is an optimization.  When terms are satisfied
** by indices, we disable them to prevent redundant tests in the inner
** loop.  We would get the correct results if nothing were ever disabled,
** but joins might run a little slower.  The trick is to disable as much
** as we can without disabling too much.  If we disabled in (1), we'd get
** the wrong answer.  See ticket #813.
**
** If all the children of a term are disabled, then that term is also
** automatically disabled.  In this way, terms get disabled if derived
** virtual terms are tested first.  For example:
**
**      x GLOB 'abc*' AND x>='abc' AND x<'acd'
**      \___________/     \______/     \_____/
**         parent          child1       child2
**
** Only the parent term was in the original WHERE clause.  The child1
** and child2 terms were added by the LIKE optimization.  If both of
** the virtual child terms are valid, then testing of the parent can be 
** skipped.
**
** Usually the parent term is marked as TERM_CODED.  But if the parent
** term was originally TERM_LIKE, then the parent gets TERM_LIKECOND instead.
** The TERM_LIKECOND marking indicates that the term should be coded inside
** a conditional such that is only evaluated on the second pass of a
** LIKE-optimization loop, when scanning BLOBs instead of strings.
*/
static void disableTerm(WhereLevel *pLevel, WhereTerm *pTerm){
  int nLoop = 0;
  while( pTerm
      && (pTerm->wtFlags & TERM_CODED)==0
      && (pLevel->iLeftJoin==0 || ExprHasProperty(pTerm->pExpr, EP_FromJoin))
      && (pLevel->notReady & pTerm->prereqAll)==0
  ){
    if( nLoop && (pTerm->wtFlags & TERM_LIKE)!=0 ){
      pTerm->wtFlags |= TERM_LIKECOND;
    }else{
      pTerm->wtFlags |= TERM_CODED;
    }
    if( pTerm->iParent<0 ) break;
    pTerm = &pTerm->pWC->a[pTerm->iParent];
    pTerm->nChild--;
    if( pTerm->nChild!=0 ) break;
    nLoop++;
  }
}

/*
** Code an OP_Affinity opcode to apply the column affinity string zAff
** to the n registers starting at base. 
**
................................................................................
      v, addrExplain, pLvl->addrBody, pLvl->addrVisit, pLoop->nOut, zObj
  );
}
#else
# define addScanStatus(a, b, c, d) ((void)d)
#endif

/*
** If the most recently coded instruction is a constant range contraint
** that originated from the LIKE optimization, then change the P3 to be
** pLoop->iLikeRepCntr and set P5.
**
** The LIKE optimization trys to evaluate "x LIKE 'abc%'" as a range
** expression: "x>='ABC' AND x<'abd'".  But this requires that the range
** scan loop run twice, once for strings and a second time for BLOBs.
** The OP_String opcodes on the second pass convert the upper and lower
** bound string contants to blobs.  This routine makes the necessary changes
** to the OP_String opcodes for that to happen.
*/
static void whereLikeOptimizationStringFixup(
  Vdbe *v,                /* prepared statement under construction */
  WhereLevel *pLevel,     /* The loop that contains the LIKE operator */
  WhereTerm *pTerm        /* The upper or lower bound just coded */
){
  if( pTerm->wtFlags & TERM_LIKEOPT ){
    VdbeOp *pOp;
    assert( pLevel->iLikeRepCntr>0 );
    pOp = sqlite3VdbeGetOp(v, -1);
    assert( pOp!=0 );
    assert( pOp->opcode==OP_String8 
            || pTerm->pWC->pWInfo->pParse->db->mallocFailed );
    pOp->p3 = pLevel->iLikeRepCntr;
    pOp->p5 = 1;
  }
}

/*
** Generate code for the start of the iLevel-th loop in the WHERE clause
** implementation described by pWInfo.
*/
static Bitmask codeOneLoopStart(
  WhereInfo *pWInfo,   /* Complete information about the WHERE clause */
................................................................................
    /* Find any inequality constraint terms for the start and end 
    ** of the range. 
    */
    j = nEq;
    if( pLoop->wsFlags & WHERE_BTM_LIMIT ){
      pRangeStart = pLoop->aLTerm[j++];
      nExtraReg = 1;
      /* Like optimization range constraints always occur in pairs */
      assert( (pRangeStart->wtFlags & TERM_LIKEOPT)==0 || 
              (pLoop->wsFlags & WHERE_TOP_LIMIT)!=0 );
    }
    if( pLoop->wsFlags & WHERE_TOP_LIMIT ){
      pRangeEnd = pLoop->aLTerm[j++];
      nExtraReg = 1;
      if( (pRangeEnd->wtFlags & TERM_LIKEOPT)!=0 ){
        assert( pRangeStart!=0 );                     /* LIKE opt constraints */
        assert( pRangeStart->wtFlags & TERM_LIKEOPT );   /* occur in pairs */
        pLevel->iLikeRepCntr = ++pParse->nMem;
        testcase( bRev );
        testcase( pIdx->aSortOrder[nEq]==SQLITE_SO_DESC );
        sqlite3VdbeAddOp2(v, OP_Integer,
                          bRev ^ (pIdx->aSortOrder[nEq]==SQLITE_SO_DESC),
                          pLevel->iLikeRepCntr);
        VdbeComment((v, "LIKE loop counter"));
        pLevel->addrLikeRep = sqlite3VdbeCurrentAddr(v);
      }
      if( pRangeStart==0
       && (j = pIdx->aiColumn[nEq])>=0 
       && pIdx->pTable->aCol[j].notNull==0
      ){
        bSeekPastNull = 1;
      }
    }
................................................................................
    start_constraints = pRangeStart || nEq>0;

    /* Seek the index cursor to the start of the range. */
    nConstraint = nEq;
    if( pRangeStart ){
      Expr *pRight = pRangeStart->pExpr->pRight;
      sqlite3ExprCode(pParse, pRight, regBase+nEq);
      whereLikeOptimizationStringFixup(v, pLevel, pRangeStart);
      if( (pRangeStart->wtFlags & TERM_VNULL)==0
       && sqlite3ExprCanBeNull(pRight)
      ){
        sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt);
        VdbeCoverage(v);
      }
      if( zStartAff ){
................................................................................
    ** range (if any).
    */
    nConstraint = nEq;
    if( pRangeEnd ){
      Expr *pRight = pRangeEnd->pExpr->pRight;
      sqlite3ExprCacheRemove(pParse, regBase+nEq, 1);
      sqlite3ExprCode(pParse, pRight, regBase+nEq);
      whereLikeOptimizationStringFixup(v, pLevel, pRangeEnd);
      if( (pRangeEnd->wtFlags & TERM_VNULL)==0
       && sqlite3ExprCanBeNull(pRight)
      ){
        sqlite3VdbeAddOp2(v, OP_IsNull, regBase+nEq, addrNxt);
        VdbeCoverage(v);
      }
      if( sqlite3CompareAffinity(pRight, cEndAff)!=SQLITE_AFF_NONE
................................................................................

    /* Run a separate WHERE clause for each term of the OR clause.  After
    ** eliminating duplicates from other WHERE clauses, the action for each
    ** sub-WHERE clause is to to invoke the main loop body as a subroutine.
    */
    wctrlFlags =  WHERE_OMIT_OPEN_CLOSE
                | WHERE_FORCE_TABLE
                | WHERE_ONETABLE_ONLY
                | WHERE_NO_AUTOINDEX;
    for(ii=0; ii<pOrWc->nTerm; ii++){
      WhereTerm *pOrTerm = &pOrWc->a[ii];
      if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){
        WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
        Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
        int j1 = 0;                     /* Address of jump operation */
        if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){
................................................................................
#endif

  /* Insert code to test every subexpression that can be completely
  ** computed using the current set of tables.
  */
  for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
    Expr *pE;
    int skipLikeAddr = 0;
    testcase( pTerm->wtFlags & TERM_VIRTUAL );
    testcase( pTerm->wtFlags & TERM_CODED );
    if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue;
    if( (pTerm->prereqAll & pLevel->notReady)!=0 ){
      testcase( pWInfo->untestedTerms==0
               && (pWInfo->wctrlFlags & WHERE_ONETABLE_ONLY)!=0 );
      pWInfo->untestedTerms = 1;
      continue;
    }
    pE = pTerm->pExpr;
    assert( pE!=0 );
    if( pLevel->iLeftJoin && !ExprHasProperty(pE, EP_FromJoin) ){
      continue;
    }
    if( pTerm->wtFlags & TERM_LIKECOND ){
      assert( pLevel->iLikeRepCntr>0 );
      skipLikeAddr = sqlite3VdbeAddOp1(v, OP_IfNot, pLevel->iLikeRepCntr);
      VdbeCoverage(v);
    }
    sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);
    if( skipLikeAddr ) sqlite3VdbeJumpHere(v, skipLikeAddr);
    pTerm->wtFlags |= TERM_CODED;
  }

  /* Insert code to test for implied constraints based on transitivity
  ** of the "==" operator.
  **
  ** Example: If the WHERE clause contains "t1.a=t2.b" and "t2.b=123"
................................................................................
    if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0)
     && (iCol<0 || pSrc->pTab->aCol[iCol].notNull)
    ){
      continue; /* ignore IS [NOT] NULL constraints on NOT NULL columns */
    }
    if( pTerm->prereqRight & pNew->maskSelf ) continue;

    /* Do not allow the upper bound of a LIKE optimization range constraint
    ** to mix with a lower range bound from some other source */
    if( pTerm->wtFlags & TERM_LIKEOPT && pTerm->eOperator==WO_LT ) continue;

    pNew->wsFlags = saved_wsFlags;
    pNew->u.btree.nEq = saved_nEq;
    pNew->nLTerm = saved_nLTerm;
    if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */
    pNew->aLTerm[pNew->nLTerm++] = pTerm;
    pNew->prereq = (saved_prereq | pTerm->prereqRight) & ~pNew->maskSelf;

................................................................................
      pNew->wsFlags |= WHERE_COLUMN_NULL;
    }else if( eOp & (WO_GT|WO_GE) ){
      testcase( eOp & WO_GT );
      testcase( eOp & WO_GE );
      pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_BTM_LIMIT;
      pBtm = pTerm;
      pTop = 0;
      if( pTerm->wtFlags & TERM_LIKEOPT ){
        /* Range contraints that come from the LIKE optimization are
        ** always used in pairs. */
        pTop = &pTerm[1];
        assert( (pTop-(pTerm->pWC->a))<pTerm->pWC->nTerm );
        assert( pTop->wtFlags & TERM_LIKEOPT );
        assert( pTop->eOperator==WO_LT );
        if( whereLoopResize(db, pNew, pNew->nLTerm+1) ) break; /* OOM */
        pNew->aLTerm[pNew->nLTerm++] = pTop;
        pNew->wsFlags |= WHERE_TOP_LIMIT;
      }
    }else{
      assert( eOp & (WO_LT|WO_LE) );
      testcase( eOp & WO_LT );
      testcase( eOp & WO_LE );
      pNew->wsFlags |= WHERE_COLUMN_RANGE|WHERE_TOP_LIMIT;
      pTop = pTerm;
      pBtm = (pNew->wsFlags & WHERE_BTM_LIMIT)!=0 ?
................................................................................
  }
  rSize = pTab->nRowLogEst;
  rLogSize = estLog(rSize);

#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
  /* Automatic indexes */
  if( !pBuilder->pOrSet
   && (pWInfo->wctrlFlags & WHERE_NO_AUTOINDEX)==0
   && (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0
   && pSrc->pIndex==0
   && !pSrc->viaCoroutine
   && !pSrc->notIndexed
   && HasRowid(pTab)
   && !pSrc->isCorrelated
   && !pSrc->isRecursive
................................................................................
    }
    sqlite3VdbeResolveLabel(v, pLevel->addrBrk);
    if( pLevel->addrSkip ){
      sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrSkip);
      VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName));
      sqlite3VdbeJumpHere(v, pLevel->addrSkip);
      sqlite3VdbeJumpHere(v, pLevel->addrSkip-2);
    }
    if( pLevel->addrLikeRep ){
      int op;
      if( sqlite3VdbeGetOp(v, pLevel->addrLikeRep-1)->p1 ){
        op = OP_DecrJumpZero;
      }else{
        op = OP_JumpZeroIncr;
      }
      sqlite3VdbeAddOp2(v, op, pLevel->iLikeRepCntr, pLevel->addrLikeRep);
      VdbeCoverage(v);
    }
    if( pLevel->iLeftJoin ){
      addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); VdbeCoverage(v);
      assert( (pLoop->wsFlags & WHERE_IDX_ONLY)==0
           || (pLoop->wsFlags & WHERE_INDEXED)!=0 );
      if( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 ){
        sqlite3VdbeAddOp1(v, OP_NullRow, pTabList->a[i].iCursor);

  int iIdxCur;          /* The VDBE cursor used to access pIdx */
  int addrBrk;          /* Jump here to break out of the loop */
  int addrNxt;          /* Jump here to start the next IN combination */
  int addrSkip;         /* Jump here for next iteration of skip-scan */
  int addrCont;         /* Jump here to continue with the next loop cycle */
  int addrFirst;        /* First instruction of interior of the loop */
  int addrBody;         /* Beginning of the body of this loop */


  u8 iFrom;             /* Which entry in the FROM clause */
  u8 op, p3, p5;        /* Opcode, P3 & P5 of the opcode that ends the loop */
  int p1, p2;           /* Operands of the opcode used to ends the loop */
  union {               /* Information that depends on pWLoop->wsFlags */
    struct {
      int nIn;              /* Number of entries in aInLoop[] */
      struct InLoop {
................................................................................
  union {
    int leftColumn;         /* Column number of X in "X <op> <expr>" */
    WhereOrInfo *pOrInfo;   /* Extra information if (eOperator & WO_OR)!=0 */
    WhereAndInfo *pAndInfo; /* Extra information if (eOperator& WO_AND)!=0 */
  } u;
  LogEst truthProb;       /* Probability of truth for this expression */
  u16 eOperator;          /* A WO_xx value describing <op> */
  u8 wtFlags;             /* TERM_xxx bit flags.  See below */
  u8 nChild;              /* Number of children that must disable us */
  WhereClause *pWC;       /* The clause this term is part of */
  Bitmask prereqRight;    /* Bitmask of tables used by pExpr->pRight */
  Bitmask prereqAll;      /* Bitmask of tables referenced by pExpr */
};

/*
................................................................................
#define TERM_ANDINFO    0x20   /* Need to free the WhereTerm.u.pAndInfo obj */
#define TERM_OR_OK      0x40   /* Used during OR-clause processing */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
#  define TERM_VNULL    0x80   /* Manufactured x>NULL or x<=NULL term */
#else
#  define TERM_VNULL    0x00   /* Disabled if not using stat3 */
#endif




/*
** An instance of the WhereScan object is used as an iterator for locating
** terms in the WHERE clause that are useful to the query planner.
*/
struct WhereScan {
  WhereClause *pOrigWC;      /* Original, innermost WhereClause */

  int iIdxCur;          /* The VDBE cursor used to access pIdx */
  int addrBrk;          /* Jump here to break out of the loop */
  int addrNxt;          /* Jump here to start the next IN combination */
  int addrSkip;         /* Jump here for next iteration of skip-scan */
  int addrCont;         /* Jump here to continue with the next loop cycle */
  int addrFirst;        /* First instruction of interior of the loop */
  int addrBody;         /* Beginning of the body of this loop */
  int iLikeRepCntr;     /* LIKE range processing counter register */
  int addrLikeRep;      /* LIKE range processing address */
  u8 iFrom;             /* Which entry in the FROM clause */
  u8 op, p3, p5;        /* Opcode, P3 & P5 of the opcode that ends the loop */
  int p1, p2;           /* Operands of the opcode used to ends the loop */
  union {               /* Information that depends on pWLoop->wsFlags */
    struct {
      int nIn;              /* Number of entries in aInLoop[] */
      struct InLoop {
................................................................................
  union {
    int leftColumn;         /* Column number of X in "X <op> <expr>" */
    WhereOrInfo *pOrInfo;   /* Extra information if (eOperator & WO_OR)!=0 */
    WhereAndInfo *pAndInfo; /* Extra information if (eOperator& WO_AND)!=0 */
  } u;
  LogEst truthProb;       /* Probability of truth for this expression */
  u16 eOperator;          /* A WO_xx value describing <op> */
  u16 wtFlags;            /* TERM_xxx bit flags.  See below */
  u8 nChild;              /* Number of children that must disable us */
  WhereClause *pWC;       /* The clause this term is part of */
  Bitmask prereqRight;    /* Bitmask of tables used by pExpr->pRight */
  Bitmask prereqAll;      /* Bitmask of tables referenced by pExpr */
};

/*
................................................................................
#define TERM_ANDINFO    0x20   /* Need to free the WhereTerm.u.pAndInfo obj */
#define TERM_OR_OK      0x40   /* Used during OR-clause processing */
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
#  define TERM_VNULL    0x80   /* Manufactured x>NULL or x<=NULL term */
#else
#  define TERM_VNULL    0x00   /* Disabled if not using stat3 */
#endif
#define TERM_LIKEOPT    0x100  /* Virtual terms from the LIKE optimization */
#define TERM_LIKECOND   0x200  /* Conditionally this LIKE operator term */
#define TERM_LIKE       0x400  /* The original LIKE operator */

/*
** An instance of the WhereScan object is used as an iterator for locating
** terms in the WHERE clause that are useful to the query planner.
*/
struct WhereScan {
  WhereClause *pOrigWC;      /* Original, innermost WhereClause */

} {0 0 0 {SEARCH TABLE t1 USING INDEX i1 (b>? AND b<?)}}
do_eqp_test analyze3-2.3 {
  SELECT count(a) FROM t1 WHERE b LIKE '%a'
} {0 0 0 {SCAN TABLE t1}}

do_test analyze3-2.4 {
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE 'a%' }
} {101 0 100}
do_test analyze3-2.5 {
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE '%a' }
} {999 999 100}

do_test analyze3-2.4 {
  set like "a%"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {101 0 100}
do_test analyze3-2.5 {
  set like "%a"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {999 999 100}
do_test analyze3-2.6 {
  set like "a"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {101 0 0}
do_test analyze3-2.7 {
  set like "ab"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {11 0 0}
do_test analyze3-2.8 {
  set like "abc"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {2 0 1}
do_test analyze3-2.9 {
  set like "a_c"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {101 0 10}


#-------------------------------------------------------------------------
# This block of tests checks that statements are correctly marked as
# expired when the values bound to any parameters that may affect the 
# query plan are modified.
#

} {0 0 0 {SEARCH TABLE t1 USING INDEX i1 (b>? AND b<?)}}
do_eqp_test analyze3-2.3 {
  SELECT count(a) FROM t1 WHERE b LIKE '%a'
} {0 0 0 {SCAN TABLE t1}}

do_test analyze3-2.4 {
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE 'a%' }
} {102 0 100}
do_test analyze3-2.5 {
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE '%a' }
} {999 999 100}

do_test analyze3-2.6 {
  set like "a%"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {102 0 100}
do_test analyze3-2.7 {
  set like "%a"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {999 999 100}
do_test analyze3-2.8 {
  set like "a"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {102 0 0}
do_test analyze3-2.9 {
  set like "ab"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {12 0 0}
do_test analyze3-2.10 {
  set like "abc"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {3 0 1}
do_test analyze3-2.11 {
  set like "a_c"
  sf_execsql { SELECT count(*) FROM t1 WHERE b LIKE $like }
} {102 0 10}


#-------------------------------------------------------------------------
# This block of tests checks that statements are correctly marked as
# expired when the values bound to any parameters that may affect the 
# query plan are modified.
#

#    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.  The
# focus of this script is testing automatic index creation logic.
#




set testdir [file dirname $argv0]
source $testdir/tester.tcl

# If the library is not compiled with automatic index support then
# skip all tests in this file.
#

#    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.  The
# focus of this script is testing automatic index creation logic.
#
# EVIDENCE-OF: R-34271-33106 PRAGMA automatic_index; PRAGMA
# automatic_index = boolean; Query, set, or clear the automatic indexing
# capability.

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# If the library is not compiled with automatic index support then
# skip all tests in this file.
#

  set ::idxlist [list]
  set numcols [sqlite3_data_count $STMT]
  for {set i 0} {$i < $numcols} {incr i} {lappend ::idxlist $i}

# types
do_test $test.1 {
  set types [list]

  foreach i $idxlist {lappend types [sqlite3_column_type $STMT $i]}










  set types
} $types


# Integers
do_test $test.2 {
  set ints [list]
  foreach i $idxlist {lappend ints [sqlite3_column_int64 $STMT $i]}
  set ints
} $ints

  set ::idxlist [list]
  set numcols [sqlite3_data_count $STMT]
  for {set i 0} {$i < $numcols} {incr i} {lappend ::idxlist $i}

# types
do_test $test.1 {
  set types [list]
  foreach i $idxlist {
    set x [sqlite3_column_type $STMT $i]
    # EVIDENCE-OF: R-12793-43283 Every value in SQLite has one of five
    # fundamental datatypes: 64-bit signed integer 64-bit IEEE floating
    # point number string BLOB NULL
    if {[lsearch {INTEGER FLOAT TEXT BLOB NULL} $x]<0} {
      set types ERROR
      break
    } else {
      lappend types $x
    }
  }
  set types
} $types
 

# Integers
do_test $test.2 {
  set ints [list]
  foreach i $idxlist {lappend ints [sqlite3_column_int64 $STMT $i]}
  set ints
} $ints

    5.1    "INSERT INTO a1 DEFAULT VALUES"     {}
    5.2    "SELECT * FROM a1"                  {{} {}}

    6.1    "INSERT INTO a1 DEFAULT VALUES"     {}
    6.2    "SELECT * FROM a1"                  {{} {} {} {}}
}

# EVIDENCE-OF: R-46928-50290 The optional conflict-clause allows the
# specification of an alternative constraint conflict resolution
# algorithm to use during this one INSERT command.
#
# EVIDENCE-OF: R-23110-47146 the parser allows the use of the single
# keyword REPLACE as an alias for "INSERT OR REPLACE".
#
#    The two requirements above are tested by e_select-4.1.* and
#    e_select-4.2.*, respectively.
#

    5.1    "INSERT INTO a1 DEFAULT VALUES"     {}
    5.2    "SELECT * FROM a1"                  {{} {}}

    6.1    "INSERT INTO a1 DEFAULT VALUES"     {}
    6.2    "SELECT * FROM a1"                  {{} {} {} {}}
}

# EVIDENCE-OF: R-03235-45250 The "REPLACE" and "INSERT OR action" forms
# specify an alternative constraint conflict resolution algorithm to use
# during this one INSERT command.
#
# EVIDENCE-OF: R-23110-47146 the parser allows the use of the single
# keyword REPLACE as an alias for "INSERT OR REPLACE".
#
#    The two requirements above are tested by e_select-4.1.* and
#    e_select-4.2.*, respectively.
#

  forcedelete test.db2
  sqlite3 db test.db2 -vfs oldvfs
  catchsql { PRAGMA journal_mode = WAL }
} {0 delete}
db close


# EVIDENCE-OF: R-22428-28959 To prevent older versions of SQLite from

# trying to recover a WAL-mode database (and making matters worse) the
# database file format version numbers (bytes 18 and 19 in the database
# header) are increased from 1 to 2 in WAL mode.
#
reset_db
do_execsql_test 4.1.1 { CREATE TABLE t1(x, y) }
do_test 4.1.2 { hexio_read test.db 18 2 } {0101}
do_execsql_test 4.1.3 { PRAGMA journal_mode = wAL } {wal}
do_test 4.1.4 { hexio_read test.db 18 2 } {0202}

  forcedelete test.db2
  sqlite3 db test.db2 -vfs oldvfs
  catchsql { PRAGMA journal_mode = WAL }
} {0 delete}
db close


# EVIDENCE-OF: R-45540-25505 To prevent older versions of SQLite (prior
# to version 3.7.0, 2010-07-22) from trying to recover a WAL-mode
# database (and making matters worse) the database file format version
# numbers (bytes 18 and 19 in the database header) are increased from 1
# to 2 in WAL mode.
#
reset_db
do_execsql_test 4.1.1 { CREATE TABLE t1(x, y) }
do_test 4.1.2 { hexio_read test.db 18 2 } {0101}
do_execsql_test 4.1.3 { PRAGMA journal_mode = wAL } {wal}
do_test 4.1.4 { hexio_read test.db 18 2 } {0202}

#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file tests the PRAGMA foreign_key_check command.
#
# EVIDENCE-OF: R-05426-18119 PRAGMA foreign_key_check; PRAGMA
# foreign_key_check(table-name);






set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix fkey5

ifcapable {!foreignkey} {
  finish_test
................................................................................
} {}    
do_test fkey5-1.2 {
  db eval {
    INSERT INTO c1 VALUES(90),(87),(88);
    PRAGMA foreign_key_check;
  }
} {c1 87 p1 0 c1 90 p1 0}










do_test fkey5-1.3 {
  db eval {
    PRAGMA foreign_key_check(c1);
  }
} {c1 87 p1 0 c1 90 p1 0}
do_test fkey5-1.4 {
  db eval {
    PRAGMA foreign_key_check(c2);
  }
} {}











# EVIDENCE-OF: R-45728-08709 There are four columns in each result row.
#
# EVIDENCE-OF: R-55672-01620 The first column is the name of the table
# that contains the REFERENCES clause.
#
# EVIDENCE-OF: R-25219-25618 The second column is the rowid of the row

#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file tests the PRAGMA foreign_key_check command.
#
# EVIDENCE-OF: R-01427-50262 PRAGMA database.foreign_key_check; PRAGMA
# database.foreign_key_check(table-name);
#
# EVIDENCE-OF: R-23918-17301 The foreign_key_check pragma checks the
# database, or the table called "table-name", for foreign key
# constraints that are violated and returns one row of output for each
# violation.

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix fkey5

ifcapable {!foreignkey} {
  finish_test
................................................................................
} {}    
do_test fkey5-1.2 {
  db eval {
    INSERT INTO c1 VALUES(90),(87),(88);
    PRAGMA foreign_key_check;
  }
} {c1 87 p1 0 c1 90 p1 0}
do_test fkey5-1.2b {
  db eval {
    PRAGMA main.foreign_key_check;
  }
} {c1 87 p1 0 c1 90 p1 0}
do_test fkey5-1.2c {
  db eval {
    PRAGMA temp.foreign_key_check;
  }
} {}
do_test fkey5-1.3 {
  db eval {
    PRAGMA foreign_key_check(c1);
  }
} {c1 87 p1 0 c1 90 p1 0}
do_test fkey5-1.4 {
  db eval {
    PRAGMA foreign_key_check(c2);
  }
} {}
do_test fkey5-1.5 {
  db eval {
    PRAGMA main.foreign_key_check(c2);
  }
} {}
do_test fkey5-1.6 {
  catchsql {
    PRAGMA temp.foreign_key_check(c2);
  }
} {1 {no such table: temp.c2}}

# EVIDENCE-OF: R-45728-08709 There are four columns in each result row.
#
# EVIDENCE-OF: R-55672-01620 The first column is the name of the table
# that contains the REFERENCES clause.
#
# EVIDENCE-OF: R-25219-25618 The second column is the rowid of the row

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !vtab {
  finish_test
  return
}


























load_static_extension db wholenumber;
do_test index7-1.1 {
  # Able to parse and manage partial indices
  execsql {
    CREATE TABLE t1(a,b,c PRIMARY KEY) WITHOUT rowid;
    CREATE INDEX t1a ON t1(a) WHERE a IS NOT NULL;
................................................................................
    INSERT INTO t1(a,b,c)
       SELECT CASE WHEN value%3!=0 THEN value END, value, value
         FROM nums WHERE value<=20;
    SELECT count(a), count(b) FROM t1;
    PRAGMA integrity_check;
  }
} {14 20 ok}










# Make sure the count(*) optimization works correctly with
# partial indices.  Ticket [a5c8ed66cae16243be6] 2013-10-03.
#
do_execsql_test index7-1.1.1 {
  SELECT count(*) FROM t1;
} {20}

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !vtab {
  finish_test
  return
}

# Capture the output of a pragma in a TEMP table.
#
proc capture_pragma {db tabname sql} {
  $db eval "DROP TABLE IF EXISTS temp.$tabname"
  set once 1
  $db eval $sql x {
    if {$once} {
      set once 0
      set ins "INSERT INTO $tabname VALUES"
      set crtab "CREATE TEMP TABLE $tabname "
      set sep "("
      foreach col $x(*) {
        append ins ${sep}\$x($col)
        append crtab ${sep}\"$col\"
        set sep ,
      }
      append ins )
      append crtab )
      $db eval $crtab
    }
    $db eval $ins
  }
}


load_static_extension db wholenumber;
do_test index7-1.1 {
  # Able to parse and manage partial indices
  execsql {
    CREATE TABLE t1(a,b,c PRIMARY KEY) WITHOUT rowid;
    CREATE INDEX t1a ON t1(a) WHERE a IS NOT NULL;
................................................................................
    INSERT INTO t1(a,b,c)
       SELECT CASE WHEN value%3!=0 THEN value END, value, value
         FROM nums WHERE value<=20;
    SELECT count(a), count(b) FROM t1;
    PRAGMA integrity_check;
  }
} {14 20 ok}

# (The "partial" column of the PRAGMA index_list output is...)
# EVIDENCE-OF: R-34457-09668 "1" if the index is a partial index and "0"
# if not.
#
do_test index7-1.1a {
  capture_pragma db out {PRAGMA index_list(t1)}
  db eval {SELECT "name", "partial", '|' FROM out ORDER BY "name"}
} {sqlite_autoindex_t1_1 0 | t1a 1 | t1b 1 |}

# Make sure the count(*) optimization works correctly with
# partial indices.  Ticket [a5c8ed66cae16243be6] 2013-10-03.
#
do_execsql_test index7-1.1.1 {
  SELECT count(*) FROM t1;
} {20}

# 2008 October 4
#
# 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.
#
#***********************************************************************
#
# $Id: indexedby.test,v 1.5 2009/03/22 20:36:19 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix indexedby

# Create a schema with some indexes.
#
................................................................................
  0 1 0 {SCAN TABLE t1}
}

# Parser tests. Test that an INDEXED BY or NOT INDEX clause can be 
# attached to a table in the FROM clause, but not to a sub-select or
# SQL view. Also test that specifying an index that does not exist or
# is attached to a different table is detected as an error.
# 






do_test indexedby-2.1 {
  execsql { SELECT * FROM t1 NOT INDEXED WHERE a = 'one' AND b = 'two'}
} {}



do_test indexedby-2.2 {
  execsql { SELECT * FROM t1 INDEXED BY i1 WHERE a = 'one' AND b = 'two'}
} {}



do_test indexedby-2.3 {
  execsql { SELECT * FROM t1 INDEXED BY i2 WHERE a = 'one' AND b = 'two'}
} {}






do_test indexedby-2.4 {
  catchsql { SELECT * FROM t1 INDEXED BY i3 WHERE a = 'one' AND b = 'two'}
} {1 {no such index: i3}}








do_test indexedby-2.5 {
  catchsql { SELECT * FROM t1 INDEXED BY i5 WHERE a = 'one' AND b = 'two'}
} {1 {no such index: i5}}
do_test indexedby-2.6 {
  catchsql { SELECT * FROM t1 INDEXED BY WHERE a = 'one' AND b = 'two'}
} {1 {near "WHERE": syntax error}}
do_test indexedby-2.7 {
  catchsql { SELECT * FROM v1 INDEXED BY i1 WHERE a = 'one' }
} {1 {no such index: i1}}


# Tests for single table cases.
#






do_execsql_test indexedby-3.1 {



  EXPLAIN QUERY PLAN SELECT * FROM t1 NOT INDEXED WHERE a = 'one' AND b = 'two'
} {0 0 0 {SCAN TABLE t1}}





do_execsql_test indexedby-3.2 {
  EXPLAIN QUERY PLAN 
  SELECT * FROM t1 INDEXED BY i1 WHERE a = 'one' AND b = 'two'
} {0 0 0 {SEARCH TABLE t1 USING INDEX i1 (a=?)}}
do_execsql_test indexedby-3.3 {
  EXPLAIN QUERY PLAN 
  SELECT * FROM t1 INDEXED BY i2 WHERE a = 'one' AND b = 'two'
................................................................................
do_execsql_test indexedby-6.1 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b = 10 ORDER BY rowid 
} {0 0 0 {SEARCH TABLE t1 USING INDEX i2 (b=?)}}
do_execsql_test indexedby-6.2 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 NOT INDEXED WHERE b = 10 ORDER BY rowid 
} {0 0 0 {SCAN TABLE t1}}





# Test that "INDEXED BY" can be used in a DELETE statement.
# 
do_execsql_test indexedby-7.1 {
  EXPLAIN QUERY PLAN DELETE FROM t1 WHERE a = 5 
} {0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i1 (a=?)}}
do_execsql_test indexedby-7.2 {
  EXPLAIN QUERY PLAN DELETE FROM t1 NOT INDEXED WHERE a = 5 

# 2008-10-04
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#


set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix indexedby

# Create a schema with some indexes.
#
................................................................................
  0 1 0 {SCAN TABLE t1}
}

# Parser tests. Test that an INDEXED BY or NOT INDEX clause can be 
# attached to a table in the FROM clause, but not to a sub-select or
# SQL view. Also test that specifying an index that does not exist or
# is attached to a different table is detected as an error.
#
# EVIDENCE-OF: R-63761-48810 -- syntax diagram qualified-table-name
# 
# EVIDENCE-OF: R-58230-57098 The "INDEXED BY index-name" phrase
# specifies that the named index must be used in order to look up values
# on the preceding table.
#
do_test indexedby-2.1 {
  execsql { SELECT * FROM t1 NOT INDEXED WHERE a = 'one' AND b = 'two'}
} {}
do_test indexedby-2.1b {
  execsql { SELECT * FROM main.t1 NOT INDEXED WHERE a = 'one' AND b = 'two'}
} {}
do_test indexedby-2.2 {
  execsql { SELECT * FROM t1 INDEXED BY i1 WHERE a = 'one' AND b = 'two'}
} {}
do_test indexedby-2.2b {
  execsql { SELECT * FROM main.t1 INDEXED BY i1 WHERE a = 'one' AND b = 'two'}
} {}
do_test indexedby-2.3 {
  execsql { SELECT * FROM t1 INDEXED BY i2 WHERE a = 'one' AND b = 'two'}
} {}
# EVIDENCE-OF: R-44699-55558 The INDEXED BY clause does not give the
# optimizer hints about which index to use; it gives the optimizer a
# requirement of which index to use.
# EVIDENCE-OF: R-15800-25719 If index-name does not exist or cannot be
# used for the query, then the preparation of the SQL statement fails.
#
do_test indexedby-2.4 {
  catchsql { SELECT * FROM t1 INDEXED BY i3 WHERE a = 'one' AND b = 'two'}
} {1 {no such index: i3}}

# EVIDENCE-OF: R-62112-42456 If the query optimizer is unable to use the
# index specified by the INDEX BY clause, then the query will fail with
# an error.
do_test indexedby-2.4.1 {
  catchsql { SELECT b FROM t1 INDEXED BY i1 WHERE b = 'two' }
} {1 {no query solution}}

do_test indexedby-2.5 {
  catchsql { SELECT * FROM t1 INDEXED BY i5 WHERE a = 'one' AND b = 'two'}
} {1 {no such index: i5}}
do_test indexedby-2.6 {
  catchsql { SELECT * FROM t1 INDEXED BY WHERE a = 'one' AND b = 'two'}
} {1 {near "WHERE": syntax error}}
do_test indexedby-2.7 {
  catchsql { SELECT * FROM v1 INDEXED BY i1 WHERE a = 'one' }
} {1 {no such index: i1}}


# Tests for single table cases.
#
# EVIDENCE-OF: R-37002-28871 The "NOT INDEXED" clause specifies that no
# index shall be used when accessing the preceding table, including
# implied indices create by UNIQUE and PRIMARY KEY constraints. However,
# the rowid can still be used to look up entries even when "NOT INDEXED"
# is specified.
#
do_execsql_test indexedby-3.1 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE a = 'one' AND b = 'two'
} {/SEARCH TABLE t1 USING INDEX/}
do_execsql_test indexedby-3.1.1 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 NOT INDEXED WHERE a = 'one' AND b = 'two'
} {0 0 0 {SCAN TABLE t1}}
do_execsql_test indexedby-3.1.2 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 NOT INDEXED WHERE rowid=1
} {/SEARCH TABLE t1 USING INTEGER PRIMARY KEY .rowid=/}


do_execsql_test indexedby-3.2 {
  EXPLAIN QUERY PLAN 
  SELECT * FROM t1 INDEXED BY i1 WHERE a = 'one' AND b = 'two'
} {0 0 0 {SEARCH TABLE t1 USING INDEX i1 (a=?)}}
do_execsql_test indexedby-3.3 {
  EXPLAIN QUERY PLAN 
  SELECT * FROM t1 INDEXED BY i2 WHERE a = 'one' AND b = 'two'
................................................................................
do_execsql_test indexedby-6.1 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 WHERE b = 10 ORDER BY rowid 
} {0 0 0 {SEARCH TABLE t1 USING INDEX i2 (b=?)}}
do_execsql_test indexedby-6.2 {
  EXPLAIN QUERY PLAN SELECT * FROM t1 NOT INDEXED WHERE b = 10 ORDER BY rowid 
} {0 0 0 {SCAN TABLE t1}}

# EVIDENCE-OF: R-40297-14464 The INDEXED BY phrase forces the SQLite
# query planner to use a particular named index on a DELETE, SELECT, or
# UPDATE statement.
#
# Test that "INDEXED BY" can be used in a DELETE statement.
# 
do_execsql_test indexedby-7.1 {
  EXPLAIN QUERY PLAN DELETE FROM t1 WHERE a = 5 
} {0 0 0 {SEARCH TABLE t1 USING COVERING INDEX i1 (a=?)}}
do_execsql_test indexedby-7.2 {
  EXPLAIN QUERY PLAN DELETE FROM t1 NOT INDEXED WHERE a = 5 

      SELECT a FROM t10 WHERE e LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.5 {
    count {
      SELECT a FROM t10 WHERE f LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 3 like 0}
  do_test like-10.6 {
    count {
      SELECT a FROM t10 WHERE a LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.10 {
    execsql {
................................................................................
      SELECT a FROM t10b WHERE e GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.14 {
    count {
      SELECT a FROM t10b WHERE f GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 3 like 0}
  do_test like-10.15 {
    count {
      SELECT a FROM t10b WHERE a GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
}

      SELECT a FROM t10 WHERE e LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.5 {
    count {
      SELECT a FROM t10 WHERE f LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 4 like 0}
  do_test like-10.6 {
    count {
      SELECT a FROM t10 WHERE a LIKE '12%' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.10 {
    execsql {
................................................................................
      SELECT a FROM t10b WHERE e GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
  do_test like-10.14 {
    count {
      SELECT a FROM t10b WHERE f GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 4 like 0}
  do_test like-10.15 {
    count {
      SELECT a FROM t10b WHERE a GLOB '12*' ORDER BY +a;
    }
  } {12 123 scan 5 like 6}
}

# 2015-03-06
#
# 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.  The
# focus of this file is testing the LIKE and GLOB operators and
# in particular the optimizations that occur to help those operators
# run faster and that those optimizations work correctly when there
# are both strings and blobs being tested.
#
# Ticket 05f43be8fdda9fbd948d374319b99b054140bc36 shows that the following
# SQL was not working correctly:
#
#     CREATE TABLE t1(x TEXT UNIQUE COLLATE nocase);
#     INSERT INTO t1(x) VALUES(x'616263');
#     SELECT 'query-1', x FROM t1 WHERE x LIKE 'a%';
#     SELECT 'query-2', x FROM t1 WHERE +x LIKE 'a%';
#
# This script verifies that it works right now.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_execsql_test like3-1.1 {
  PRAGMA encoding=UTF8;
  CREATE TABLE t1(a,b TEXT COLLATE nocase);
  INSERT INTO t1(a,b)
     VALUES(1,'abc'),
           (2,'ABX'),
           (3,'BCD'),
           (4,x'616263'),
           (5,x'414258'),
           (6,x'424344');
  CREATE INDEX t1ba ON t1(b,a);

  SELECT a, b FROM t1 WHERE b LIKE 'aB%' ORDER BY +a;
} {1 abc 2 ABX 4 abc 5 ABX}
do_execsql_test like3-1.2 {
  SELECT a, b FROM t1 WHERE +b LIKE 'aB%' ORDER BY +a;
} {1 abc 2 ABX 4 abc 5 ABX}

do_execsql_test like3-2.0 {
  CREATE TABLE t2(a, b TEXT);
  INSERT INTO t2 SELECT a, b FROM t1;
  CREATE INDEX t2ba ON t2(b,a);
  SELECT a, b FROM t2 WHERE b GLOB 'ab*' ORDER BY +a;
} {1 abc 4 abc}
do_execsql_test like3-2.1 {
  SELECT a, b FROM t2 WHERE +b GLOB 'ab*' ORDER BY +a;
} {1 abc 4 abc}
do_execsql_test like3-2.2 {
  SELECT a, b FROM t2 WHERE b>=x'6162' AND b GLOB 'ab*'
} {4 abc}
do_execsql_test like3-2.3 {
  SELECT a, b FROM t2 WHERE +b>=x'6162' AND +b GLOB 'ab*'
} {4 abc}
do_execsql_test like3-2.4 {
  SELECT a, b FROM t2 WHERE b GLOB 'ab*' AND b>=x'6162'
} {4 abc}
do_execsql_test like3-2.5 {
  SELECT a, b FROM t2 WHERE +b GLOB 'ab*' AND +b>=x'6162'
} {4 abc}

do_execsql_test like3-3.0 {
  CREATE TABLE t3(x TEXT PRIMARY KEY COLLATE nocase);
  INSERT INTO t3(x) VALUES('aaa'),('abc'),('abd'),('abe'),('acz');
  INSERT INTO t3(x) SELECT CAST(x AS blob) FROM t3;
  SELECT quote(x) FROM t3 WHERE x LIKE 'ab%' ORDER BY x;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}
do_execsql_test like3-3.1 {
  SELECT quote(x) FROM t3 WHERE x LIKE 'ab%' ORDER BY x DESC;
} {X'616265' X'616264' X'616263' 'abe' 'abd' 'abc'}
do_execsql_test like3-3.1ck {
  SELECT quote(x) FROM t3 WHERE x LIKE 'ab%' ORDER BY +x DESC;
} {X'616265' X'616264' X'616263' 'abe' 'abd' 'abc'}
do_execsql_test like3-3.2 {
  SELECT quote(x) FROM t3 WHERE x LIKE 'ab%' ORDER BY x ASC;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}
do_execsql_test like3-3.2ck {
  SELECT quote(x) FROM t3 WHERE x LIKE 'ab%' ORDER BY +x ASC;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}

do_execsql_test like3-4.0 {
  CREATE TABLE t4(x TEXT COLLATE nocase);
  CREATE INDEX t4x ON t4(x DESC);
  INSERT INTO t4(x) SELECT x FROM t3;
  SELECT quote(x) FROM t4 WHERE x LIKE 'ab%' ORDER BY x;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}
do_execsql_test like3-4.1 {
  SELECT quote(x) FROM t4 WHERE x LIKE 'ab%' ORDER BY x DESC;
} {X'616265' X'616264' X'616263' 'abe' 'abd' 'abc'}
do_execsql_test like3-4.1ck {
  SELECT quote(x) FROM t4 WHERE x LIKE 'ab%' ORDER BY +x DESC;
} {X'616265' X'616264' X'616263' 'abe' 'abd' 'abc'}
do_execsql_test like3-4.2 {
  SELECT quote(x) FROM t4 WHERE x LIKE 'ab%' ORDER BY x ASC;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}
do_execsql_test like3-4.2ck {
  SELECT quote(x) FROM t4 WHERE x LIKE 'ab%' ORDER BY +x ASC;
} {'abc' 'abd' 'abe' X'616263' X'616264' X'616265'}



finish_test

  execsql {
    SELECT * FROM t6 LIMIT 0 OFFSET 1
  }
} {}

# Make sure LIMIT works well with compound SELECT statements.
# Ticket #393






#
ifcapable compound {
do_test limit-7.1.1 {
  catchsql {
    SELECT x FROM t2 LIMIT 5 UNION ALL SELECT a FROM t6;
  }
} {1 {LIMIT clause should come after UNION ALL not before}}

  execsql {
    SELECT * FROM t6 LIMIT 0 OFFSET 1
  }
} {}

# Make sure LIMIT works well with compound SELECT statements.
# Ticket #393
#
# EVIDENCE-OF: R-13512-64012 In a compound SELECT, only the last or
# right-most simple SELECT may contain a LIMIT clause.
#
# EVIDENCE-OF: R-03782-50113 In a compound SELECT, the LIMIT clause
# applies to the entire compound, not just the final SELECT.
#
ifcapable compound {
do_test limit-7.1.1 {
  catchsql {
    SELECT x FROM t2 LIMIT 5 UNION ALL SELECT a FROM t6;
  }
} {1 {LIMIT clause should come after UNION ALL not before}}

  set r [catch {execsql {SELECT * FROM t1} db2} msg]
  lappend r $msg
  lappend r $::callback_value
} {0 {2 1} {}}
execsql {ROLLBACK}

# Test the built-in busy timeout handler



#
do_test lock-2.8 {
  db2 timeout 400
  execsql BEGIN
  execsql {UPDATE t1 SET a = 0 WHERE 0}
  catchsql {BEGIN EXCLUSIVE;} db2
} {1 {database is locked}}

  set r [catch {execsql {SELECT * FROM t1} db2} msg]
  lappend r $msg
  lappend r $::callback_value
} {0 {2 1} {}}
execsql {ROLLBACK}

# Test the built-in busy timeout handler
#
# EVIDENCE-OF: R-23579-05241 PRAGMA busy_timeout; PRAGMA busy_timeout =
# milliseconds; Query or change the setting of the busy timeout.
#
do_test lock-2.8 {
  db2 timeout 400
  execsql BEGIN
  execsql {UPDATE t1 SET a = 0 WHERE 0}
  catchsql {BEGIN EXCLUSIVE;} db2
} {1 {database is locked}}

  db eval {
    DELETE FROM t1;
    VACUUM;
  }
  multiplex_file_list mx4test
} {mx4test.db}









do_test multiplex4-1.2 {
  db eval {PRAGMA multiplex_truncate}
} {on}
do_test multiplex4-1.3 {
  db eval {PRAGMA multiplex_truncate=off}
} {off}
do_test multiplex4-1.4 {
................................................................................
} {off}
do_test multiplex4-1.8 {
  db eval {PRAGMA multiplex_truncate=1}
} {on}
do_test multiplex4-1.9 {
  db eval {PRAGMA multiplex_truncate=0}
} {off}











do_test multiplex4-1.10 {
  db eval {
    INSERT INTO t1(x) VALUES(randomblob(250000));
  }
  multiplex_file_list mx4test
} {mx4test.001 mx4test.db}

  db eval {
    DELETE FROM t1;
    VACUUM;
  }
  multiplex_file_list mx4test
} {mx4test.db}

# NB:  The PRAGMA multiplex_truncate command is implemented using the
# SQLITE_FCNTL_PRAGMA file-control...
#
# EVIDENCE-OF: R-12238-55120 Whenever a PRAGMA statement is parsed, an
# SQLITE_FCNTL_PRAGMA file control is sent to the open sqlite3_file
# object corresponding to the database file to which the pragma
# statement refers.
#
do_test multiplex4-1.2 {
  db eval {PRAGMA multiplex_truncate}
} {on}
do_test multiplex4-1.3 {
  db eval {PRAGMA multiplex_truncate=off}
} {off}
do_test multiplex4-1.4 {
................................................................................
} {off}
do_test multiplex4-1.8 {
  db eval {PRAGMA multiplex_truncate=1}
} {on}
do_test multiplex4-1.9 {
  db eval {PRAGMA multiplex_truncate=0}
} {off}

# EVIDENCE-OF: R-26188-08449 If the SQLITE_FCNTL_PRAGMA file control
# returns SQLITE_OK, then the parser assumes that the VFS has handled
# the PRAGMA itself and the parser generates a no-op prepared statement
# if result string is NULL, or that returns a copy of the result string
# if the string is non-NULL.
#
do_test multiplex4-1.9-explain {
  db eval {EXPLAIN PRAGMA multiplex_truncate=0;}
} {/String8 \d \d \d off/}

do_test multiplex4-1.10 {
  db eval {
    INSERT INTO t1(x) VALUES(randomblob(250000));
  }
  multiplex_file_list mx4test
} {mx4test.001 mx4test.db}

# that the "all.test" script does.
#
db close
delete_file test.db test.db-journal
delete_file test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]






ifcapable pager_pragmas {
set DFLT_CACHE_SZ [db one {PRAGMA default_cache_size}]
set TEMP_CACHE_SZ [db one {PRAGMA temp.default_cache_size}]
do_test pragma-1.1 {
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 2]
do_test pragma-1.2 {


  execsql {
    PRAGMA synchronous=OFF;
    PRAGMA cache_size=1234;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
................................................................................
    CREATE INDEX t3i1 ON t3(a,b);
  }
  capture_pragma db out {
    pragma index_info(t3i1);
  }
  db eval {SELECT seqno, cid, name FROM out ORDER BY seqno}
} {0 0 a 1 1 b}































do_test pragma-6.5.2 {
  execsql {
    pragma index_info(t3i1_bogus);
  }
} {}

ifcapable tempdb {
................................................................................
  {3 four REAL 0 X'abcdef' 0} \
  {4 five {} 0 CURRENT_TIME 0} \
]
} ;# ifcapable schema_pragmas
# Miscellaneous tests
#
ifcapable schema_pragmas {



do_test pragma-7.1.1 {
  # Make sure a pragma knows to read the schema if it needs to
  db close
  sqlite3 db test.db
  capture_pragma db out "PRAGMA index_list(t3)"
  db eval {SELECT name, "origin" FROM out ORDER BY name DESC}
} {t3i1 c sqlite_autoindex_t3_1 u}
................................................................................

} ;# ifcapable bloblit 

ifcapable pager_pragmas {
  db close
  forcedelete test.db
  sqlite3 db test.db




  do_test pragma-14.1 {
    execsql { pragma auto_vacuum = 0 }
    execsql { pragma page_count }
  } {0}

  do_test pragma-14.2 {
    execsql { 
      CREATE TABLE abc(a, b, c);
      PRAGMA page_count;


    }
  } {2}
  do_test pragma-14.2uc {
    execsql {pragma PAGE_COUNT}
  } {2}

  do_test pragma-14.3 {
    execsql { 
      BEGIN;
................................................................................
sqlite3 db test.db
sqlite3 db2 test.db
do_test 23.1 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d);
    CREATE INDEX i1 ON t1(b,c);
    CREATE INDEX i2 ON t1(c,d);

    CREATE TABLE t2(x INTEGER REFERENCES t1);
  }
  db2 eval {SELECT name FROM sqlite_master}
} {t1 i1 i2 t2}
do_test 23.2a {
  db eval {
    DROP INDEX i2;
    CREATE INDEX i2 ON t1(c,d,b);
  }
  capture_pragma db2 out {PRAGMA index_info(i2)}
  db2 eval {SELECT cid, name, "desc", coll, "key", '|' FROM out ORDER BY seqno}
} {2 c 0 BINARY 1 | 3 d 0 BINARY 1 | 1 b 0 BINARY 1 |}








do_test 23.2b {
breakpoint;
  capture_pragma db2 out {PRAGMA index_xinfo(i2)}
  db2 eval {SELECT cid, name, "desc", coll, "key", '|' FROM out ORDER BY seqno}
} {2 c 0 BINARY 1 | 3 d 0 BINARY 1 | 1 b 0 BINARY 1 | -1 {} 0 BINARY 0 |}




















































do_test 23.3 {
  db eval {
    CREATE INDEX i3 ON t1(d,b,c);
  }
  capture_pragma db2 out {PRAGMA index_list(t1)}
  db2 eval {SELECT name, "unique", origin FROM out ORDER BY seq}
} {i3 0 c i2 0 c i1 0 c}


do_test 23.4 {
  db eval {
    ALTER TABLE t1 ADD COLUMN e;
  }
  db2 eval {
    PRAGMA table_info(t1);
  }

# that the "all.test" script does.
#
db close
delete_file test.db test.db-journal
delete_file test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]

# EVIDENCE-OF: R-24197-42751 PRAGMA database.cache_size; PRAGMA
# database.cache_size = pages; PRAGMA database.cache_size = -kibibytes;
# Query or change the suggested maximum number of database disk pages
# that SQLite will hold in memory at once per open database file.
#
ifcapable pager_pragmas {
set DFLT_CACHE_SZ [db one {PRAGMA default_cache_size}]
set TEMP_CACHE_SZ [db one {PRAGMA temp.default_cache_size}]
do_test pragma-1.1 {
  execsql {
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
} [list $DFLT_CACHE_SZ $DFLT_CACHE_SZ 2]
do_test pragma-1.2 {
  # EVIDENCE-OF: R-42059-47211 If the argument N is positive then the
  # suggested cache size is set to N.
  execsql {
    PRAGMA synchronous=OFF;
    PRAGMA cache_size=1234;
    PRAGMA cache_size;
    PRAGMA default_cache_size;
    PRAGMA synchronous;
  }
................................................................................
    CREATE INDEX t3i1 ON t3(a,b);
  }
  capture_pragma db out {
    pragma index_info(t3i1);
  }
  db eval {SELECT seqno, cid, name FROM out ORDER BY seqno}
} {0 0 a 1 1 b}

# EVIDENCE-OF: R-23114-21695 The auxiliary index-columns are not shown
# by the index_info pragma, but they are listed by the index_xinfo
# pragma.
#
do_test pragma-6.5.1b {
  capture_pragma db out {PRAGMA index_xinfo(t3i1)}
  db eval {SELECT seqno, cid, name FROM out ORDER BY seqno}
} {0 0 a 1 1 b 2 -1 {}}


# EVIDENCE-OF: R-62725-03366 PRAGMA database.index_info(index-name);
# This pragma returns one row for each key column in the named index.
#
# (The first column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-34186-52914 The rank of the column within the index. (0
# means left-most.)
#
# (The second column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-65019-08383 The rank of the column within the table
# being indexed.
#
# (The third column of output from PRAGMA index_info is...)
# EVIDENCE-OF: R-09773-34266 The name of the column being indexed.
#
do_execsql_test pragma-6.5.1c {
  CREATE INDEX t3i2 ON t3(b,a);
  PRAGMA index_info='t3i2';
  DROP INDEX t3i2;
} {0 1 b 1 0 a}

do_test pragma-6.5.2 {
  execsql {
    pragma index_info(t3i1_bogus);
  }
} {}

ifcapable tempdb {
................................................................................
  {3 four REAL 0 X'abcdef' 0} \
  {4 five {} 0 CURRENT_TIME 0} \
]
} ;# ifcapable schema_pragmas
# Miscellaneous tests
#
ifcapable schema_pragmas {
# EVIDENCE-OF: R-63500-32024 PRAGMA database.index_list(table-name);
# This pragma returns one row for each index associated with the given
# table.
do_test pragma-7.1.1 {
  # Make sure a pragma knows to read the schema if it needs to
  db close
  sqlite3 db test.db
  capture_pragma db out "PRAGMA index_list(t3)"
  db eval {SELECT name, "origin" FROM out ORDER BY name DESC}
} {t3i1 c sqlite_autoindex_t3_1 u}
................................................................................

} ;# ifcapable bloblit 

ifcapable pager_pragmas {
  db close
  forcedelete test.db
  sqlite3 db test.db
 
  # EVIDENCE-OF: R-13905-26312 PRAGMA database.page_count; Return the
  # total number of pages in the database file.
  #
  do_test pragma-14.1 {
    execsql { pragma auto_vacuum = 0 }
    execsql { pragma page_count; pragma main.page_count }
  } {0 0}

  do_test pragma-14.2 {
    execsql { 
      CREATE TABLE abc(a, b, c);
      PRAGMA page_count;
      PRAGMA main.page_count;
      PRAGMA temp.page_count;
    }
  } {2 2 0}
  do_test pragma-14.2uc {
    execsql {pragma PAGE_COUNT}
  } {2}

  do_test pragma-14.3 {
    execsql { 
      BEGIN;
................................................................................
sqlite3 db test.db
sqlite3 db2 test.db
do_test 23.1 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d);
    CREATE INDEX i1 ON t1(b,c);
    CREATE INDEX i2 ON t1(c,d);
    CREATE INDEX i2x ON t1(d COLLATE nocase, c DESC);
    CREATE TABLE t2(x INTEGER REFERENCES t1);
  }
  db2 eval {SELECT name FROM sqlite_master}
} {t1 i1 i2 i2x t2}
do_test 23.2a {
  db eval {
    DROP INDEX i2;
    CREATE INDEX i2 ON t1(c,d,b);
  }
  capture_pragma db2 out {PRAGMA index_info(i2)}
  db2 eval {SELECT cid, name, '|' FROM out ORDER BY seqno}
} {2 c | 3 d | 1 b |}

# EVIDENCE-OF: R-44874-46325 PRAGMA database.index_xinfo(index-name);
# This pragma returns information about every column in an index.
#
# EVIDENCE-OF: R-45970-35618 Unlike this index_info pragma, this pragma
# returns information about every column in the index, not just the key
# columns.
#
do_test 23.2b {

  capture_pragma db2 out {PRAGMA index_xinfo(i2)}
  db2 eval {SELECT cid, name, "desc", coll, "key", '|' FROM out ORDER BY seqno}
} {2 c 0 BINARY 1 | 3 d 0 BINARY 1 | 1 b 0 BINARY 1 | -1 {} 0 BINARY 0 |}

# (The first column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-00197-14279 The rank of the column within the index. (0
# means left-most. Key columns come before auxiliary columns.)
#
# (The second column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-40889-06838 The rank of the column within the table
# being indexed, or -1 if the index-column is the rowid of the table
# being indexed.
#
# (The third column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-22751-28901 The name of the column being indexed, or
# NULL if the index-column is the rowid of the table being indexed.
#
# (The fourth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-11847-09179 1 if the index-column is sorted in reverse
# (DESC) order by the index and 0 otherwise.
#
# (The fifth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-15313-19540 The name for the collating sequence used to
# compare values in the index-column.
#
# (The sixth column of output from PRAGMA index_xinfo is...)
# EVIDENCE-OF: R-14310-64553 1 if the index-column is a key column and 0
# if the index-column is an auxiliary column.
#
do_test 23.2c {
  db2 eval {PRAGMA index_xinfo(i2)}
} {0 2 c 0 BINARY 1 1 3 d 0 BINARY 1 2 1 b 0 BINARY 1 3 -1 {} 0 BINARY 0}
do_test 23.2d {
  db2 eval {PRAGMA index_xinfo(i2x)}
} {0 3 d 0 nocase 1 1 2 c 1 BINARY 1 2 -1 {} 0 BINARY 0}

# EVIDENCE-OF: R-63500-32024 PRAGMA database.index_list(table-name);
# This pragma returns one row for each index associated with the given
# table.
#
# (The first column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-02753-24748 A sequence number assigned to each index
# for internal tracking purposes.
#
# (The second column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-35496-03635 The name of the index.
#
# (The third column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-57301-64506 "1" if the index is UNIQUE and "0" if not.
#
# (The fourth column of output from PRAGMA index_list is...)
# EVIDENCE-OF: R-36609-39554 "c" if the index was created by a CREATE
# INDEX statement, "u" if the index was created by a UNIQUE constraint,
# or "pk" if the index was created by a PRIMARY KEY constraint.
#
do_test 23.3 {
  db eval {
    CREATE INDEX i3 ON t1(d,b,c);
  }
  capture_pragma db2 out {PRAGMA index_list(t1)}


  db2 eval {SELECT seq, name, "unique", origin, '|' FROM out ORDER BY seq}
} {0 i3 0 c | 1 i2 0 c | 2 i2x 0 c | 3 i1 0 c |}
do_test 23.4 {
  db eval {
    ALTER TABLE t1 ADD COLUMN e;
  }
  db2 eval {
    PRAGMA table_info(t1);
  }

#
db close
delete_file test.db test.db-journal
delete_file test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
db eval {PRAGMA auto_vacuum=0}





do_test pragma2-1.1 {
  execsql {
    PRAGMA freelist_count;
  }
} {0}
do_test pragma2-1.2 {
  execsql {

#
db close
delete_file test.db test.db-journal
delete_file test3.db test3.db-journal
sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
db eval {PRAGMA auto_vacuum=0}


# EVIDENCE-OF: R-17887-14874 PRAGMA database.freelist_count; Return the
# number of unused pages in the database file.
#
do_test pragma2-1.1 {
  execsql {
    PRAGMA freelist_count;
  }
} {0}
do_test pragma2-1.2 {
  execsql {

do_test rdonly-1.1 {
  execsql {
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(1);
    SELECT * FROM t1;
  }
} {1}





do_test rdonly-1.1.1 {
  sqlite3_db_readonly db main
} {0}

# Changes the write version from 1 to 3.  Verify that the database
# can be read but not written.
#

do_test rdonly-1.1 {
  execsql {
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(1);
    SELECT * FROM t1;
  }
} {1}

# EVIDENCE-OF: R-29639-16887 The sqlite3_db_readonly(D,N) interface
# returns 1 if the database N of connection D is read-only, 0 if it is
# read/write, or -1 if N is not the name of a database on connection D.
#
do_test rdonly-1.1.1 {
  sqlite3_db_readonly db main
} {0}

# Changes the write version from 1 to 3.  Verify that the database
# can be read but not written.
#

      SELECT log FROM t1 WHERE n IN 
        (SELECT DISTINCT log FROM t1 UNION ALL
         SELECT n FROM t1 WHERE log=3)
      ORDER BY log;
    }
  } {0 1 2 2 3 3 3 3}
}




do_test select4-1.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]

      SELECT log FROM t1 WHERE n IN 
        (SELECT DISTINCT log FROM t1 UNION ALL
         SELECT n FROM t1 WHERE log=3)
      ORDER BY log;
    }
  } {0 1 2 2 3 3 3 3}
}

# EVIDENCE-OF: R-02644-22131 In a compound SELECT statement, only the
# last or right-most simple SELECT may have an ORDER BY clause.
#
do_test select4-1.3 {
  set v [catch {execsql {
    SELECT DISTINCT log FROM t1 ORDER BY log
    UNION ALL
    SELECT n FROM t1 WHERE log=3
    ORDER BY log;
  }} msg]

do_test shrink-1.1 {
  db eval {
    PRAGMA cache_size = 2000;
    CREATE TABLE t1(x,y);
    INSERT INTO t1 VALUES(randomblob(1000000),1);
  }
  set ::baseline sqlite3_memory_used



  sqlite3_db_release_memory db
  expr {$::baseline > [sqlite3_memory_used]+500000}
} {1}
do_test shrink-1.2 {
  set baseline [sqlite3_memory_used]
  db eval {
    UPDATE t1 SET y=y+1;

do_test shrink-1.1 {
  db eval {
    PRAGMA cache_size = 2000;
    CREATE TABLE t1(x,y);
    INSERT INTO t1 VALUES(randomblob(1000000),1);
  }
  set ::baseline sqlite3_memory_used
  # EVIDENCE-OF: R-58814-63508 The sqlite3_db_release_memory(D) interface
  # attempts to free as much heap memory as possible from database
  # connection D.
  sqlite3_db_release_memory db
  expr {$::baseline > [sqlite3_memory_used]+500000}
} {1}
do_test shrink-1.2 {
  set baseline [sqlite3_memory_used]
  db eval {
    UPDATE t1 SET y=y+1;

source $testdir/tester.tcl

ifcapable !integrityck {
  finish_test
  return
}









do_test softheap1-1.0 {
  execsql {PRAGMA soft_heap_limit}
} [sqlite3_soft_heap_limit -1]
do_test softheap1-1.1 {
  execsql {PRAGMA soft_heap_limit=123456; PRAGMA soft_heap_limit;}
} {123456 123456}
do_test softheap1-1.2 {

source $testdir/tester.tcl

ifcapable !integrityck {
  finish_test
  return
}

# EVIDENCE-OF: R-26343-45930 This pragma invokes the
# sqlite3_soft_heap_limit64() interface with the argument N, if N is
# specified and is a non-negative integer.
#
# EVIDENCE-OF: R-64451-07163 The soft_heap_limit pragma always returns
# the same integer that would be returned by the
# sqlite3_soft_heap_limit64(-1) C-language function.
#
do_test softheap1-1.0 {
  execsql {PRAGMA soft_heap_limit}
} [sqlite3_soft_heap_limit -1]
do_test softheap1-1.1 {
  execsql {PRAGMA soft_heap_limit=123456; PRAGMA soft_heap_limit;}
} {123456 123456}
do_test softheap1-1.2 {

sqlite3_shutdown
sqlite3_config_pmasz 10
sqlite3_initialize
sqlite3 db test.db


# Configure the sorter to use 3 background threads.






db eval {PRAGMA threads=3}








# Minimum number of seconds to run for. If the value is 0, each test
# is run exactly once. Otherwise, tests are repeated until the timeout
# expires.
set SORT4TIMEOUT 0
if {[permutation] == "multithread"} { set SORT4TIMEOUT 300 }

sqlite3_shutdown
sqlite3_config_pmasz 10
sqlite3_initialize
sqlite3 db test.db


# Configure the sorter to use 3 background threads.
#
# EVIDENCE-OF: R-19249-32353 SQLITE_LIMIT_WORKER_THREADS The maximum
# number of auxiliary worker threads that a single prepared statement
# may start.
#
do_test sort4-init001 {
  db eval {PRAGMA threads=5}
  sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS -1
} {5}
do_test sort4-init002 {
  sqlite3_limit db SQLITE_LIMIT_WORKER_THREADS 3
  db eval {PRAGMA threads}
} {3}


# Minimum number of seconds to run for. If the value is 0, each test
# is run exactly once. Otherwise, tests are repeated until the timeout
# expires.
set SORT4TIMEOUT 0
if {[permutation] == "multithread"} { set SORT4TIMEOUT 300 }

  sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER -1
} $SQLITE_MAX_VARIABLE_NUMBER

#--------------------------------------------------------------------
# Test cases sqllimits1-5.* test that the SQLITE_MAX_LENGTH limit
# is enforced.
#



db close
sqlite3 db test.db
set LARGESIZE 99999
set SQLITE_LIMIT_LENGTH 100000
sqlite3_limit db SQLITE_LIMIT_LENGTH $SQLITE_LIMIT_LENGTH

do_test sqllimits1-5.1.1 {
................................................................................
  } {1 {string or blob too big}}
}
unset strvalue

#--------------------------------------------------------------------
# Test cases sqllimits1-6.* test that the SQLITE_MAX_SQL_LENGTH limit
# is enforced.



#
do_test sqllimits1-6.1 {
  sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 50000
  set sql "SELECT 1 WHERE 1==1"
  set tail " /* A comment to take up space in order to make the string\
                longer without increasing the expression depth */\
                AND   1  ==  1"
................................................................................
  execsql {
    DROP TABLE abc;
  }
} {}

#--------------------------------------------------------------------
# Test cases sqllimits1-8.* test the SQLITE_MAX_COLUMN limit.





#
set SQLITE_LIMIT_COLUMN 200
sqlite3_limit db SQLITE_LIMIT_COLUMN $SQLITE_LIMIT_COLUMN
do_test sqllimits1-8.1 {
  # Columns in a table.
  set cols [list]
  for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
................................................................................


#--------------------------------------------------------------------
# These tests - sqllimits1-9.* - test that the SQLITE_LIMIT_EXPR_DEPTH
# limit is enforced. The limit refers to the number of terms in 
# the expression.
#



if {$SQLITE_MAX_EXPR_DEPTH==0} {
  puts -nonewline stderr "WARNING: Compile with -DSQLITE_MAX_EXPR_DEPTH to run "
  puts stderr "tests sqllimits1-9.X"
} else {
  do_test sqllimits1-9.1 {
    set max $::SQLITE_MAX_EXPR_DEPTH
    set expr "(1 [string repeat {AND 1 } $max])"
................................................................................
# in a single VDBE program.
#
# TODO

#--------------------------------------------------------------------
# Test the SQLITE_LIMIT_FUNCTION_ARG limit works. Test case names
# match the pattern "sqllimits1-11.*".



#
for {set max 5} {$max<=$SQLITE_MAX_FUNCTION_ARG} {incr max} {
  do_test sqllimits1-11.$max.1 {
    set vals [list]
    sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG $::max
    for {set i 0} {$i < $::max} {incr i} {
      lappend vals $i
................................................................................
    catchsql "SELECT myfunc([join $vals ,])"
  } {1 {too many arguments on function myfunc}}
}

#--------------------------------------------------------------------
# Test cases sqllimits1-12.*: Test the SQLITE_MAX_ATTACHED limit.
#



ifcapable attach {
  do_test sqllimits1-12.1 {
    set max $::SQLITE_MAX_ATTACHED
    for {set i 0} {$i < ($max)} {incr i} {
      forcedelete test${i}.db test${i}.db-journal
    }
    for {set i 0} {$i < ($max)} {incr i} {
................................................................................
  } {}
}

#--------------------------------------------------------------------
# Test cases sqllimits1-13.*: Check that the SQLITE_MAX_VARIABLE_NUMBER 
# limit works.
#



do_test sqllimits1-13.1 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  catchsql "SELECT ?[expr {$max+1}] FROM t1"
} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
do_test sqllimits1-13.2 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  set vals [list]
................................................................................
#--------------------------------------------------------------------
# Test cases sqllimits1-15.* verify that the 
# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
# applies to the built-in LIKE operator, supplying an external 
# implementation by overriding the like() scalar function bypasses
# this limitation.
#



# These tests check that the limit is not incorrectly applied to
# the left-hand-side of the LIKE operator (the string being tested
# against the pattern).
#
set SQLITE_LIMIT_LIKE_PATTERN 1000
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH $SQLITE_LIMIT_LIKE_PATTERN
do_test sqllimits1-15.1 {

  sqlite3_limit db SQLITE_LIMIT_VARIABLE_NUMBER -1
} $SQLITE_MAX_VARIABLE_NUMBER

#--------------------------------------------------------------------
# Test cases sqllimits1-5.* test that the SQLITE_MAX_LENGTH limit
# is enforced.
#
# EVIDENCE-OF: R-61987-00541 SQLITE_LIMIT_LENGTH The maximum size of any
# string or BLOB or table row, in bytes.
#
db close
sqlite3 db test.db
set LARGESIZE 99999
set SQLITE_LIMIT_LENGTH 100000
sqlite3_limit db SQLITE_LIMIT_LENGTH $SQLITE_LIMIT_LENGTH

do_test sqllimits1-5.1.1 {
................................................................................
  } {1 {string or blob too big}}
}
unset strvalue

#--------------------------------------------------------------------
# Test cases sqllimits1-6.* test that the SQLITE_MAX_SQL_LENGTH limit
# is enforced.
#
# EVIDENCE-OF: R-09808-17554 SQLITE_LIMIT_SQL_LENGTH The maximum length
# of an SQL statement, in bytes.
#
do_test sqllimits1-6.1 {
  sqlite3_limit db SQLITE_LIMIT_SQL_LENGTH 50000
  set sql "SELECT 1 WHERE 1==1"
  set tail " /* A comment to take up space in order to make the string\
                longer without increasing the expression depth */\
                AND   1  ==  1"
................................................................................
  execsql {
    DROP TABLE abc;
  }
} {}

#--------------------------------------------------------------------
# Test cases sqllimits1-8.* test the SQLITE_MAX_COLUMN limit.
#
# EVIDENCE-OF: R-43996-29471 SQLITE_LIMIT_COLUMN The maximum number of
# columns in a table definition or in the result set of a SELECT or the
# maximum number of columns in an index or in an ORDER BY or GROUP BY
# clause.
#
set SQLITE_LIMIT_COLUMN 200
sqlite3_limit db SQLITE_LIMIT_COLUMN $SQLITE_LIMIT_COLUMN
do_test sqllimits1-8.1 {
  # Columns in a table.
  set cols [list]
  for {set i 0} {$i <= $SQLITE_LIMIT_COLUMN} {incr i} {
................................................................................


#--------------------------------------------------------------------
# These tests - sqllimits1-9.* - test that the SQLITE_LIMIT_EXPR_DEPTH
# limit is enforced. The limit refers to the number of terms in 
# the expression.
#
# EVIDENCE-OF: R-12723-08526 SQLITE_LIMIT_EXPR_DEPTH The maximum depth
# of the parse tree on any expression.
#
if {$SQLITE_MAX_EXPR_DEPTH==0} {
  puts -nonewline stderr "WARNING: Compile with -DSQLITE_MAX_EXPR_DEPTH to run "
  puts stderr "tests sqllimits1-9.X"
} else {
  do_test sqllimits1-9.1 {
    set max $::SQLITE_MAX_EXPR_DEPTH
    set expr "(1 [string repeat {AND 1 } $max])"
................................................................................
# in a single VDBE program.
#
# TODO

#--------------------------------------------------------------------
# Test the SQLITE_LIMIT_FUNCTION_ARG limit works. Test case names
# match the pattern "sqllimits1-11.*".
#
# EVIDENCE-OF: R-59001-45278 SQLITE_LIMIT_FUNCTION_ARG The maximum
# number of arguments on a function.
#
for {set max 5} {$max<=$SQLITE_MAX_FUNCTION_ARG} {incr max} {
  do_test sqllimits1-11.$max.1 {
    set vals [list]
    sqlite3_limit db SQLITE_LIMIT_FUNCTION_ARG $::max
    for {set i 0} {$i < $::max} {incr i} {
      lappend vals $i
................................................................................
    catchsql "SELECT myfunc([join $vals ,])"
  } {1 {too many arguments on function myfunc}}
}

#--------------------------------------------------------------------
# Test cases sqllimits1-12.*: Test the SQLITE_MAX_ATTACHED limit.
#
# EVIDENCE-OF: R-41778-26203 SQLITE_LIMIT_ATTACHED The maximum number of
# attached databases.
#
ifcapable attach {
  do_test sqllimits1-12.1 {
    set max $::SQLITE_MAX_ATTACHED
    for {set i 0} {$i < ($max)} {incr i} {
      forcedelete test${i}.db test${i}.db-journal
    }
    for {set i 0} {$i < ($max)} {incr i} {
................................................................................
  } {}
}

#--------------------------------------------------------------------
# Test cases sqllimits1-13.*: Check that the SQLITE_MAX_VARIABLE_NUMBER 
# limit works.
#
# EVIDENCE-OF: R-42363-29104 SQLITE_LIMIT_VARIABLE_NUMBER The maximum
# index number of any parameter in an SQL statement.
#
do_test sqllimits1-13.1 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  catchsql "SELECT ?[expr {$max+1}] FROM t1"
} "1 {variable number must be between ?1 and ?$::SQLITE_MAX_VARIABLE_NUMBER}"
do_test sqllimits1-13.2 {
  set max $::SQLITE_MAX_VARIABLE_NUMBER
  set vals [list]
................................................................................
#--------------------------------------------------------------------
# Test cases sqllimits1-15.* verify that the 
# SQLITE_MAX_LIKE_PATTERN_LENGTH limit is enforced. This limit only
# applies to the built-in LIKE operator, supplying an external 
# implementation by overriding the like() scalar function bypasses
# this limitation.
#
# EVIDENCE-OF: R-12940-37052 SQLITE_LIMIT_LIKE_PATTERN_LENGTH The
# maximum length of the pattern argument to the LIKE or GLOB operators.
#
# These tests check that the limit is not incorrectly applied to
# the left-hand-side of the LIKE operator (the string being tested
# against the pattern).
#
set SQLITE_LIMIT_LIKE_PATTERN 1000
sqlite3_limit db SQLITE_LIMIT_LIKE_PATTERN_LENGTH $SQLITE_LIMIT_LIKE_PATTERN
do_test sqllimits1-15.1 {

do_test where8-1.3 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b = 'two' }
} {IX X II 0 0 6}

do_test where8-1.4 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b GLOB 't*' }
} {IX X III II 0 0 9}

do_test where8-1.5 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b GLOB 'f*' }
} {IX X V IV 0 0 9}

do_test where8-1.6 { 
  execsql_status { SELECT c FROM t1 WHERE a = 1 OR b = 'three' ORDER BY rowid }
} {I III 0 1}

do_test where8-1.7 { 
  execsql_status { SELECT c FROM t1 WHERE a = 1 OR b = 'three' ORDER BY a }

do_test where8-1.3 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b = 'two' }
} {IX X II 0 0 6}

do_test where8-1.4 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b GLOB 't*' }
} {IX X III II 0 0 10}

do_test where8-1.5 { 
  execsql_status2 { SELECT c FROM t1 WHERE a > 8 OR b GLOB 'f*' }
} {IX X V IV 0 0 10}

do_test where8-1.6 { 
  execsql_status { SELECT c FROM t1 WHERE a = 1 OR b = 'three' ORDER BY rowid }
} {I III 0 1}

do_test where8-1.7 { 
  execsql_status { SELECT c FROM t1 WHERE a = 1 OR b = 'three' ORDER BY a }

   sqlite3ext.h
   sqlite3.h
   sqliteicu.h
   sqliteInt.h
   sqliteLimit.h
   vdbe.h
   vdbeInt.h

   wal.h
   whereInt.h
} {
  set available_hdr($hdr) 1
}
set available_hdr(sqliteInt.h) 0
set available_hdr(sqlite3session.h) 0

   sqlite3ext.h
   sqlite3.h
   sqliteicu.h
   sqliteInt.h
   sqliteLimit.h
   vdbe.h
   vdbeInt.h
   vxworks.h
   wal.h
   whereInt.h
} {
  set available_hdr($hdr) 1
}
set available_hdr(sqliteInt.h) 0
set available_hdr(sqlite3session.h) 0