SQLite

  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h
EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/rtree/sqlite3rtree.h

# executables needed for testing
#
TESTPROGS = \
  testfixture$(TEXE) \
  sqlite3$(TEXE) \
  sqlite3_analyzer$(TEXE) \
  sqldiff$(TEXE)


# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	sqlite3.h libsqlite3.la sqlite3$(TEXE) $(HAVE_TCL:1=libtclsqlite3.la)

Makefile: $(TOP)/Makefile.in

TESTFIXTURE_SRC += $(TESTFIXTURE_SRC$(USE_AMALGAMATION))

testfixture$(TEXE):	$(TESTFIXTURE_SRC)
	$(LTLINK) -DSQLITE_NO_SYNC=1 $(TEMP_STORE) $(TESTFIXTURE_FLAGS) \
		-o $@ $(TESTFIXTURE_SRC) $(LIBTCL) $(TLIBS)

# A very detailed test running most or all test cases
fulltest:	testfixture$(TEXE) sqlite3$(TEXE) fuzztest
fulltest:	$(TESTPROGS) fuzztest
	./testfixture$(TEXE) $(TOP)/test/all.test

# Really really long testing
soaktest:	testfixture$(TEXE) sqlite3$(TEXE) fuzzoomtest
soaktest:	$(TESTPROGS) fuzzoomtest
	./testfixture$(TEXE) $(TOP)/test/all.test -soak=1

# Do extra testing but not aeverything.
fulltestonly:	testfixture$(TEXE) sqlite3$(TEXE)
# Do extra testing but not everything.
fulltestonly:	$(TESTPROGS)
	./testfixture$(TEXE) $(TOP)/test/full.test

# Fuzz testing
fuzztest:	fuzzershell$(TEXE)
	./fuzzershell$(TEXE) $(TOP)/test/fuzzdata1.txt $(TOP)/test/fuzzdata2.txt

fuzzoomtest:	fuzzershell$(TEXE)
	./fuzzershell$(TEXE) -f $(TOP)/test/fuzzdata1.txt --oom

# This is the common case.  Run many tests but not those that take
# a really long time.
#
test:	testfixture$(TEXE) sqlite3$(TEXE) fuzztest
test:	$(TESTPROGS) fuzztest
	./testfixture$(TEXE) $(TOP)/test/veryquick.test

# Run a test using valgrind.  This can take a really long time
# because valgrind is so much slower than a native machine.
#
valgrindtest:	testfixture$(TEXE) sqlite3$(TEXE) fuzzershell$(TEXE)
valgrindtest:	$(TESTPROGS) fuzzershell$(TEXE)
	valgrind -v ./fuzzershell$(TEXE) -f $(TOP)/test/fuzzdata1.txt
	OMIT_MISUSE=1 valgrind -v ./testfixture$(TEXE) $(TOP)/test/permutations.test valgrind

# A very fast test that checks basic sanity.  The name comes from
# the 60s-era electronics testing:  "Turn it on and see if smoke
# comes out."
#
smoketest:	testfixture$(TEXE) fuzzershell$(TEXE)
smoketest:	$(TESTPROGS) fuzzershell$(TEXE)
	./testfixture$(TEXE) $(TOP)/test/main.test

sqlite3_analyzer.c: sqlite3.c $(TOP)/src/tclsqlite.c $(TOP)/tool/spaceanal.tcl
	echo "#define TCLSH 2" > $@
	echo "#define SQLITE_ENABLE_DBSTAT_VTAB" >> $@
	echo "#define SQLITE_ENABLE_DBSTAT_VTAB 1" >> $@
	cat sqlite3.c $(TOP)/src/tclsqlite.c >> $@
	echo "static const char *tclsh_main_loop(void){" >> $@
	echo "static const char *zMainloop = " >> $@
	$(NAWK) -f $(TOP)/tool/tostr.awk $(TOP)/tool/spaceanal.tcl >> $@
	echo "; return zMainloop; }" >> $@

sqlite3_analyzer$(TEXE): sqlite3_analyzer.c

	rm -f sqlite3.dll sqlite3.lib sqlite3.exp sqlite3.def
	rm -f sqlite3.c
	rm -f sqlite3rc.h
	rm -f shell.c sqlite3ext.h
	rm -f sqlite3_analyzer$(TEXE) sqlite3_analyzer.c
	rm -f sqlite-*-output.vsix
	rm -f mptester mptester.exe
	rm -f fuzzershell fuzzershell.exe
	rm -f sqldiff sqldiff.exe

distclean:	clean
	rm -f config.log config.status libtool Makefile sqlite3.pc

#
# Windows section
#

# Set this non-0 to have the shell executable link against the core dynamic
# link library.
#
!IFNDEF DYNAMIC_SHELL
DYNAMIC_SHELL = 0
!ENDIF

# Set this non-0 to enable extra code that attempts to detect misuse of the
# SQLite API.
#
!IFNDEF API_ARMOR
API_ARMOR = 0
!ENDIF

# If necessary, create a list of harmless compiler warnings to disable when
# compiling the various tools.  For the SQLite source code itself, warnings,
# if any, will be disabled from within it.
#
!IFNDEF NO_WARN
!IF $(USE_FULLWARN)!=0

#
!IF $(DEBUG)==0
TCC = $(TCC) -DNDEBUG
BCC = $(BCC) -DNDEBUG
RCC = $(RCC) -DNDEBUG
!ENDIF

!IF $(DEBUG)>0
TCC = $(TCC) -DSQLITE_ENABLE_API_ARMOR
RCC = $(RCC) -DSQLITE_ENABLE_API_ARMOR
!IF $(DEBUG)>0 || $(API_ARMOR)!=0
TCC = $(TCC) -DSQLITE_ENABLE_API_ARMOR=1
RCC = $(RCC) -DSQLITE_ENABLE_API_ARMOR=1
!ENDIF

!IF $(DEBUG)>2
TCC = $(TCC) -DSQLITE_DEBUG
RCC = $(RCC) -DSQLITE_DEBUG
TCC = $(TCC) -DSQLITE_DEBUG=1
RCC = $(RCC) -DSQLITE_DEBUG=1
!ENDIF

!IF $(DEBUG)>4 || $(OSTRACE)!=0
TCC = $(TCC) -DSQLITE_FORCE_OS_TRACE=1 -DSQLITE_DEBUG_OS_TRACE=1
RCC = $(RCC) -DSQLITE_FORCE_OS_TRACE=1 -DSQLITE_DEBUG_OS_TRACE=1
!ENDIF

!IF $(DEBUG)>5
TCC = $(TCC) -DSQLITE_ENABLE_IOTRACE
RCC = $(RCC) -DSQLITE_ENABLE_IOTRACE
TCC = $(TCC) -DSQLITE_ENABLE_IOTRACE=1
RCC = $(RCC) -DSQLITE_ENABLE_IOTRACE=1
!ENDIF

# Prevent warnings about "insecure" MSVC runtime library functions
# being used.
#
TCC = $(TCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS
BCC = $(BCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS

  $(TOP)\ext\rtree\rtree.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\icu\sqliteicu.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\rtree\sqlite3rtree.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\session\sqlite3session.h

# executables needed for testing
#
TESTPROGS = \
  testfixture.exe \
  sqlite3.exe \
  sqlite3_analyzer.exe \
  sqldiff.exe


# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	dll libsqlite3.lib sqlite3.exe libtclsqlite3.lib

libsqlite3.lib:	$(LIBOBJ)

		-DBUILD_sqlite -I$(TCLINCDIR) \
		$(TESTFIXTURE_SRC) \
		/link $(LTLINKOPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

extensiontest: testfixture.exe testloadext.dll
	.\testfixture.exe $(TOP)\test\loadext.test

fulltest:	testfixture.exe sqlite3.exe fuzztest
fulltest:	$(TESTPROGS) fuzztest
	.\testfixture.exe $(TOP)\test\all.test

soaktest:	testfixture.exe sqlite3.exe fuzzoomtest
soaktest:	$(TESTPROGS) fuzzoomtest
	.\testfixture.exe $(TOP)\test\all.test -soak=1

fulltestonly:	testfixture.exe sqlite3.exe fuzztest
fulltestonly:	$(TESTPROGS) fuzztest
	.\testfixture.exe $(TOP)\test\full.test

queryplantest:	testfixture.exe sqlite3.exe
	.\testfixture.exe $(TOP)\test\permutations.test queryplanner

fuzztest:	fuzzershell.exe
	.\fuzzershell.exe $(TOP)\test\fuzzdata1.txt $(TOP)\test\fuzzdata2.txt

fuzzoomtest:	fuzzershell.exe
	.\fuzzershell.exe -f $(TOP)\test\fuzzdata1.txt --oom

test:	testfixture.exe sqlite3.exe fuzztest
test:	$(TESTPROGS) fuzztest
	.\testfixture.exe $(TOP)\test\veryquick.test

smoketest:	testfixture.exe
smoketest:	$(TESTPROGS) fuzzershell.exe
	.\testfixture.exe $(TOP)\test\main.test

sqlite3_analyzer.c: $(SQLITE3C) $(TOP)\src\tclsqlite.c $(TOP)\tool\spaceanal.tcl
	echo #define TCLSH 2 > $@
	echo #define SQLITE_ENABLE_DBSTAT_VTAB 1 >> $@
	copy $(SQLITE3C) + $(TOP)\src\tclsqlite.c $@
	copy $@ + $(SQLITE3C) + $(TOP)\src\tclsqlite.c $@
	echo static const char *tclsh_main_loop(void){ >> $@
	echo static const char *zMainloop = >> $@
	$(NAWK) -f $(TOP)\tool\tostr.awk $(TOP)\tool\spaceanal.tcl >> $@
	echo ; return zMainloop; } >> $@

sqlite3_analyzer.exe:	sqlite3_analyzer.c $(LIBRESOBJS)
	$(LTLINK) $(NO_WARN) -DBUILD_sqlite -DSQLITE_ENABLE_DBSTAT_VTAB -DTCLSH=2 -I$(TCLINCDIR) sqlite3_analyzer.c \
	$(LTLINK) $(NO_WARN) -DBUILD_sqlite -I$(TCLINCDIR) sqlite3_analyzer.c \
		/link $(LTLINKOPTS) $(LTLIBPATHS) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

testloadext.lo:	$(TOP)\src\test_loadext.c
	$(LTCOMPILE) $(NO_WARN) -c $(TOP)\src\test_loadext.c

testloadext.dll: testloadext.lo
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL /OUT:$@ testloadext.lo

	del /Q mptester.exe wordcount.exe 2>NUL
	del /Q sqlite3.exe sqlite3.dll sqlite3.def 2>NUL
	del /Q sqlite3.c sqlite3-*.c 2>NUL
	del /Q sqlite3rc.h 2>NUL
	del /Q shell.c sqlite3ext.h 2>NUL
	del /Q sqlite3_analyzer.exe sqlite3_analyzer.c 2>NUL
	del /Q sqlite-*-output.vsix 2>NUL
	del /Q fuzzershell.exe sqldiff.exe 2>NUL

# Dynamic link library section.
#
dll: sqlite3.dll

sqlite3.def: libsqlite3.lib
	echo EXPORTS > sqlite3.def
	dumpbin /all libsqlite3.lib \
		| $(NAWK) "/ 1 _?sqlite3_/ { sub(/^.* _?/,\"\");print }" \
		| sort >> sqlite3.def

sqlite3.dll: $(LIBOBJ) $(LIBRESOBJS) $(CORE_LINK_DEP)
	$(LD) $(LDFLAGS) $(LTLINKOPTS) $(LTLIBPATHS) /DLL $(CORE_LINK_OPTS) /OUT:$@ $(LIBOBJ) $(LIBRESOBJS) $(LTLIBS) $(TLIBS)

3.8.10
3.8.10.1

AM_CFLAGS = @THREADSAFE_FLAGS@ @DYNAMIC_EXTENSION_FLAGS@ -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_RTREE

lib_LTLIBRARIES = libsqlite3.la
libsqlite3_la_SOURCES = sqlite3.c
libsqlite3_la_LDFLAGS = -no-undefined -version-info 8:6:8

bin_PROGRAMS = sqlite3
sqlite3_SOURCES = shell.c sqlite3.h
sqlite3_LDADD = sqlite3.$(OBJEXT) @READLINE_LIBS@
sqlite3_SOURCES = shell.c sqlite3.c sqlite3.h
sqlite3_LDADD = @READLINE_LIBS@
sqlite3_CFLAGS = $(AM_CFLAGS)

include_HEADERS = sqlite3.h sqlite3ext.h

EXTRA_DIST = sqlite3.1 tea
pkgconfigdir = ${libdir}/pkgconfig
pkgconfig_DATA = sqlite3.pc

#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.62 for sqlite 3.8.10.
# Generated by GNU Autoconf 2.62 for sqlite 3.8.10.1.
#
# 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='3.8.10'
PACKAGE_STRING='sqlite 3.8.10'
PACKAGE_VERSION='3.8.10.1'
PACKAGE_STRING='sqlite 3.8.10.1'
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 3.8.10 to adapt to many kinds of systems.
\`configure' configures sqlite 3.8.10.1 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 3.8.10:";;
     short | recursive ) echo "Configuration of sqlite 3.8.10.1:";;
   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 3.8.10
sqlite configure 3.8.10.1
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 3.8.10, which was
It was created by sqlite $as_me 3.8.10.1, 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 3.8.10, which was
This file was extended by sqlite $as_me 3.8.10.1, 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 3.8.10
sqlite config.status 3.8.10.1
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."

static int fts3CloseMethod(sqlite3_vtab_cursor *pCursor){
  Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
  assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
  sqlite3_finalize(pCsr->pStmt);
  sqlite3Fts3ExprFree(pCsr->pExpr);
  sqlite3Fts3FreeDeferredTokens(pCsr);
  sqlite3_free(pCsr->aDoclist);
  sqlite3_free(pCsr->aMatchinfo);
  sqlite3Fts3MIBufferFree(pCsr->pMIBuffer);
  assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 );
  sqlite3_free(pCsr);
  return SQLITE_OK;
}

/*
** If pCsr->pStmt has not been prepared (i.e. if pCsr->pStmt==0), then

  if( idxNum & FTS3_HAVE_DOCID_GE ) pDocidGe = apVal[iIdx++];
  if( idxNum & FTS3_HAVE_DOCID_LE ) pDocidLe = apVal[iIdx++];
  assert( iIdx==nVal );

  /* In case the cursor has been used before, clear it now. */
  sqlite3_finalize(pCsr->pStmt);
  sqlite3_free(pCsr->aDoclist);
  sqlite3_free(pCsr->aMatchinfo);
  sqlite3Fts3MIBufferFree(pCsr->pMIBuffer);
  sqlite3Fts3ExprFree(pCsr->pExpr);
  memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor));

  /* Set the lower and upper bounds on docids to return */
  pCsr->iMinDocid = fts3DocidRange(pDocidGe, SMALLEST_INT64);
  pCsr->iMaxDocid = fts3DocidRange(pDocidLe, LARGEST_INT64);

typedef struct Fts3Doclist Fts3Doclist;
typedef struct Fts3SegFilter Fts3SegFilter;
typedef struct Fts3DeferredToken Fts3DeferredToken;
typedef struct Fts3SegReader Fts3SegReader;
typedef struct Fts3MultiSegReader Fts3MultiSegReader;

typedef struct MatchinfoBuffer MatchinfoBuffer;

/*
** A connection to a fulltext index is an instance of the following
** structure. The xCreate and xConnect methods create an instance
** of this structure and xDestroy and xDisconnect free that instance.
** All other methods receive a pointer to the structure as one of their
** arguments.
*/

  u8 bDesc;                       /* True to sort in descending order */
  int eEvalmode;                  /* An FTS3_EVAL_XX constant */
  int nRowAvg;                    /* Average size of database rows, in pages */
  sqlite3_int64 nDoc;             /* Documents in table */
  i64 iMinDocid;                  /* Minimum docid to return */
  i64 iMaxDocid;                  /* Maximum docid to return */
  int isMatchinfoNeeded;          /* True when aMatchinfo[] needs filling in */
  u32 *aMatchinfo;                /* Information about most recent match */
  int nMatchinfo;                 /* Number of elements in aMatchinfo[] */
  char *zMatchinfo;               /* Matchinfo specification */
  MatchinfoBuffer *pMIBuffer;     /* Buffer for matchinfo data */
};

#define FTS3_EVAL_FILTER    0
#define FTS3_EVAL_NEXT      1
#define FTS3_EVAL_MATCHINFO 2

/*

  /* The following are used by the fts3_eval.c module. */
  sqlite3_int64 iDocid;      /* Current docid */
  u8 bEof;                   /* True this expression is at EOF already */
  u8 bStart;                 /* True if iDocid is valid */
  u8 bDeferred;              /* True if this expression is entirely deferred */

  /* The following are used by the fts3_snippet.c module. */
  int iPhrase;               /* Index of this phrase in matchinfo() results */
  u32 *aMI;
  u32 *aMI;                  /* See above */
};

/*
** Candidate values for Fts3Query.eType. Note that the order of the first
** four values is in order of precedence when parsing expressions. For 
** example, the following:
**

/* fts3_snippet.c */
void sqlite3Fts3Offsets(sqlite3_context*, Fts3Cursor*);
void sqlite3Fts3Snippet(sqlite3_context *, Fts3Cursor *, const char *,
  const char *, const char *, int, int
);
void sqlite3Fts3Matchinfo(sqlite3_context *, Fts3Cursor *, const char *);
void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p);

/* fts3_expr.c */
int sqlite3Fts3ExprParse(sqlite3_tokenizer *, int,
  char **, int, int, int, const char *, int, Fts3Expr **, char **
);
void sqlite3Fts3ExprFree(Fts3Expr *);
#ifdef SQLITE_TEST

#define FTS3_MATCHINFO_NCOL      'c'        /* 1 value */
#define FTS3_MATCHINFO_NDOC      'n'        /* 1 value */
#define FTS3_MATCHINFO_AVGLENGTH 'a'        /* nCol values */
#define FTS3_MATCHINFO_LENGTH    'l'        /* nCol values */
#define FTS3_MATCHINFO_LCS       's'        /* nCol values */
#define FTS3_MATCHINFO_HITS      'x'        /* 3*nCol*nPhrase values */
#define FTS3_MATCHINFO_LHITS     'y'        /* nCol*nPhrase values */
#define FTS3_MATCHINFO_LHITS_BM  'b'        /* nCol*nPhrase values */

/*
** The default value for the second argument to matchinfo(). 
*/
#define FTS3_MATCHINFO_DEFAULT   "pcx"

*/
typedef struct MatchInfo MatchInfo;
struct MatchInfo {
  Fts3Cursor *pCursor;            /* FTS3 Cursor */
  int nCol;                       /* Number of columns in table */
  int nPhrase;                    /* Number of matchable phrases in query */
  sqlite3_int64 nDoc;             /* Number of docs in database */
  char flag;
  u32 *aMatchinfo;                /* Pre-allocated buffer */
};

/*
** An instance of this structure is used to manage a pair of buffers, each
** (nElem * sizeof(u32)) bytes in size. See the MatchinfoBuffer code below
** for details.
*/
struct MatchinfoBuffer {
  u8 aRef[3];
  int nElem;
  int bGlobal;                    /* Set if global data is loaded */
  char *zMatchinfo;
  u32 aMatchinfo[0];
};


/*
** The snippet() and offsets() functions both return text values. An instance
** of the following structure is used to accumulate those values while the
** functions are running. See fts3StringAppend() for details.
*/
typedef struct StrBuffer StrBuffer;
struct StrBuffer {
  char *z;                        /* Pointer to buffer containing string */
  int n;                          /* Length of z in bytes (excl. nul-term) */
  int nAlloc;                     /* Allocated size of buffer z in bytes */
};


/*************************************************************************
** Start of MatchinfoBuffer code.
*/

/*
** Allocate a two-slot MatchinfoBuffer object.
*/
static MatchinfoBuffer *fts3MIBufferNew(int nElem, const char *zMatchinfo){
  MatchinfoBuffer *pRet;
  int nByte = sizeof(u32) * (2*nElem + 2) + sizeof(MatchinfoBuffer);
  int nStr = strlen(zMatchinfo);

  pRet = sqlite3_malloc(nByte + nStr+1);
  if( pRet ){
    memset(pRet, 0, nByte);
    pRet->aMatchinfo[0] = (u8*)(&pRet->aMatchinfo[1]) - (u8*)pRet;
    pRet->aMatchinfo[1+nElem] = pRet->aMatchinfo[0] + sizeof(u32)*(nElem+1);
    pRet->nElem = nElem;
    pRet->zMatchinfo = ((char*)pRet) + nByte;
    memcpy(pRet->zMatchinfo, zMatchinfo, nStr+1);
    pRet->aRef[0] = 1;
  }

  return pRet;
}

static void fts3MIBufferFree(void *p){
  MatchinfoBuffer *pBuf = (MatchinfoBuffer*)((u8*)p - ((u32*)p)[-1]);

  assert( (u32*)p==&pBuf->aMatchinfo[1] 
       || (u32*)p==&pBuf->aMatchinfo[pBuf->nElem+2] 
  );
  if( (u32*)p==&pBuf->aMatchinfo[1] ){
    pBuf->aRef[1] = 0;
  }else{
    pBuf->aRef[2] = 0;
  }

  if( pBuf->aRef[0]==0 && pBuf->aRef[1]==0 && pBuf->aRef[2]==0 ){
    sqlite3_free(pBuf);
  }
}

static void (*fts3MIBufferAlloc(MatchinfoBuffer *p, u32 **paOut))(void*){
  void (*xRet)(void*) = 0;
  u32 *aOut = 0;

  if( p->aRef[1]==0 ){
    p->aRef[1] = 1;
    aOut = &p->aMatchinfo[1];
    xRet = fts3MIBufferFree;
  }
  else if( p->aRef[2]==0 ){
    p->aRef[2] = 1;
    aOut = &p->aMatchinfo[p->nElem+2];
    xRet = fts3MIBufferFree;
  }else{
    aOut = (u32*)sqlite3_malloc(p->nElem * sizeof(u32));
    if( aOut ){
      xRet = sqlite3_free;
      if( p->bGlobal ) memcpy(aOut, &p->aMatchinfo[1], p->nElem*sizeof(u32));
    }
  }

  *paOut = aOut;
  return xRet;
}

static void fts3MIBufferSetGlobal(MatchinfoBuffer *p){
  p->bGlobal = 1;
  memcpy(&p->aMatchinfo[2+p->nElem], &p->aMatchinfo[1], p->nElem*sizeof(u32));
}

/*
** Free a MatchinfoBuffer object allocated using fts3MIBufferNew()
*/
void sqlite3Fts3MIBufferFree(MatchinfoBuffer *p){
  if( p ){
    assert( p->aRef[0]==1 );
    p->aRef[0] = 0;
    if( p->aRef[0]==0 && p->aRef[1]==0 && p->aRef[2]==0 ){
      sqlite3_free(p);
    }
  }
}

/* 
** End of MatchinfoBuffer code.
*************************************************************************/


/*
** This function is used to help iterate through a position-list. A position
** list is a list of unique integers, sorted from smallest to largest. Each
** element of the list is represented by an FTS3 varint that takes the value
** of the difference between the current element and the previous one plus
** two. For example, to store the position-list:

static int fts3ExprIterate2(
  Fts3Expr *pExpr,                /* Expression to iterate phrases of */
  int *piPhrase,                  /* Pointer to phrase counter */
  int (*x)(Fts3Expr*,int,void*),  /* Callback function to invoke for phrases */
  void *pCtx                      /* Second argument to pass to callback */
){
  int rc;                         /* Return code */
  int eType = pExpr->eType;       /* Type of expression node pExpr */
  int eType = pExpr->eType;     /* Type of expression node pExpr */

  if( eType!=FTSQUERY_PHRASE ){
    assert( pExpr->pLeft && pExpr->pRight );
    rc = fts3ExprIterate2(pExpr->pLeft, piPhrase, x, pCtx);
    if( rc==SQLITE_OK && eType!=FTSQUERY_NOT ){
      rc = fts3ExprIterate2(pExpr->pRight, piPhrase, x, pCtx);
    }

  Fts3Expr *pExpr,                /* Expression to iterate phrases of */
  int (*x)(Fts3Expr*,int,void*),  /* Callback function to invoke for phrases */
  void *pCtx                      /* Second argument to pass to callback */
){
  int iPhrase = 0;                /* Variable used as the phrase counter */
  return fts3ExprIterate2(pExpr, &iPhrase, x, pCtx);
}


/*
** This is an fts3ExprIterate() callback used while loading the doclists
** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also
** fts3ExprLoadDoclists().
*/
static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){

  if( pnPhrase ) *pnPhrase = sCtx.nPhrase;
  if( pnToken ) *pnToken = sCtx.nToken;
  return rc;
}

static int fts3ExprPhraseCountCb(Fts3Expr *pExpr, int iPhrase, void *ctx){
  (*(int *)ctx)++;
  UNUSED_PARAMETER(pExpr);
  UNUSED_PARAMETER(iPhrase);
  pExpr->iPhrase = iPhrase;
  return SQLITE_OK;
}
static int fts3ExprPhraseCount(Fts3Expr *pExpr){
  int nPhrase = 0;
  (void)fts3ExprIterate(pExpr, fts3ExprPhraseCountCb, (void *)&nPhrase);
  return nPhrase;
}

  ** the set of phrases in the expression to populate the aPhrase[] array.
  */
  sIter.pCsr = pCsr;
  sIter.iCol = iCol;
  sIter.nSnippet = nSnippet;
  sIter.nPhrase = nList;
  sIter.iCurrent = -1;
  rc = fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void *)&sIter);
  rc = fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void*)&sIter);
  if( rc==SQLITE_OK ){

    /* Set the *pmSeen output variable. */
    for(i=0; i<nList; i++){
      if( sIter.aPhrase[i].pHead ){
        *pmSeen |= (u64)1 << i;
      }

    c = *pEnd++ & 0x80;
    if( !c ) nEntry++;
  }

  *ppCollist = pEnd;
  return nEntry;
}

/*
** This function gathers 'y' or 'b' data for a single phrase.
*/
static void fts3ExprLHits(
  Fts3Expr *pExpr,                /* Phrase expression node */
  MatchInfo *p                    /* Matchinfo context */
){
  Fts3Table *pTab = (Fts3Table *)p->pCursor->base.pVtab;
  int iStart;
  Fts3Phrase *pPhrase = pExpr->pPhrase;
  char *pIter = pPhrase->doclist.pList;
  int iCol = 0;

  assert( p->flag==FTS3_MATCHINFO_LHITS_BM || p->flag==FTS3_MATCHINFO_LHITS );
  if( p->flag==FTS3_MATCHINFO_LHITS ){
    iStart = pExpr->iPhrase * p->nCol;
  }else{
    iStart = pExpr->iPhrase * ((p->nCol + 31) / 32);
  }

  while( 1 ){
    int nHit = fts3ColumnlistCount(&pIter);
    if( (pPhrase->iColumn>=pTab->nColumn || pPhrase->iColumn==iCol) ){
      if( p->flag==FTS3_MATCHINFO_LHITS ){
        p->aMatchinfo[iStart + iCol] = (u32)nHit;
      }else if( nHit ){
        p->aMatchinfo[iStart + (iCol+1)/32] |= (1 << (iCol&0x1F));
      }
    }
    assert( *pIter==0x00 || *pIter==0x01 );
    if( *pIter!=0x01 ) break;
    pIter++;
    pIter += fts3GetVarint32(pIter, &iCol);
  }
}

/*
** Gather the results for matchinfo directives 'y' and 'b'.
*/
static void fts3ExprLHitGather(
  Fts3Expr *pExpr,
  MatchInfo *p
){
  assert( (pExpr->pLeft==0)==(pExpr->pRight==0) );
  if( pExpr->bEof==0 && pExpr->iDocid==p->pCursor->iPrevId ){
    if( pExpr->pLeft ){
      fts3ExprLHitGather(pExpr->pLeft, p);
      fts3ExprLHitGather(pExpr->pRight, p);
    }else{
      fts3ExprLHits(pExpr, p);
    }
  }
}

/*
** fts3ExprIterate() callback used to collect the "global" matchinfo stats
** for a single query. 
**
** fts3ExprIterate() callback to load the 'global' elements of a
** FTS3_MATCHINFO_HITS matchinfo array. The global stats are those elements 

      p->aMatchinfo[iStart+i*3] = 0;
    }
  }

  return rc;
}

/*
** fts3ExprIterate() callback used to gather information for the matchinfo
** directive 'y'.
*/
static int fts3ExprLHitsCb(
  Fts3Expr *pExpr,                /* Phrase expression node */
  int iPhrase,                    /* Phrase number */
  void *pCtx                      /* Pointer to MatchInfo structure */
){
  MatchInfo *p = (MatchInfo *)pCtx;
  Fts3Table *pTab = (Fts3Table *)p->pCursor->base.pVtab;
  int rc = SQLITE_OK;
  int iStart = iPhrase * p->nCol;
  Fts3Expr *pEof;                 /* Ancestor node already at EOF */
  
  /* This must be a phrase */
  assert( pExpr->pPhrase );

  /* Initialize all output integers to zero. */
  memset(&p->aMatchinfo[iStart], 0, sizeof(u32) * p->nCol);

  /* Check if this or any parent node is at EOF. If so, then all output
  ** values are zero.  */
  for(pEof=pExpr; pEof && pEof->bEof==0; pEof=pEof->pParent);

  if( pEof==0 && pExpr->iDocid==p->pCursor->iPrevId ){
    Fts3Phrase *pPhrase = pExpr->pPhrase;
    char *pIter = pPhrase->doclist.pList;
    int iCol = 0;

    while( 1 ){
      int nHit = fts3ColumnlistCount(&pIter);
      if( (pPhrase->iColumn>=pTab->nColumn || pPhrase->iColumn==iCol) ){
        p->aMatchinfo[iStart + iCol] = (u32)nHit;
      }
      assert( *pIter==0x00 || *pIter==0x01 );
      if( *pIter!=0x01 ) break;
      pIter++;
      pIter += fts3GetVarint32(pIter, &iCol);
    }
  }

  return rc;
}

static int fts3MatchinfoCheck(
  Fts3Table *pTab, 
  char cArg,
  char **pzErr
){
  if( (cArg==FTS3_MATCHINFO_NPHRASE)
   || (cArg==FTS3_MATCHINFO_NCOL)
   || (cArg==FTS3_MATCHINFO_NDOC && pTab->bFts4)
   || (cArg==FTS3_MATCHINFO_AVGLENGTH && pTab->bFts4)
   || (cArg==FTS3_MATCHINFO_LENGTH && pTab->bHasDocsize)
   || (cArg==FTS3_MATCHINFO_LCS)
   || (cArg==FTS3_MATCHINFO_HITS)
   || (cArg==FTS3_MATCHINFO_LHITS)
   || (cArg==FTS3_MATCHINFO_LHITS_BM)
  ){
    return SQLITE_OK;
  }
  sqlite3Fts3ErrMsg(pzErr, "unrecognized matchinfo request: %c", cArg);
  return SQLITE_ERROR;
}

    case FTS3_MATCHINFO_LCS:
      nVal = pInfo->nCol;
      break;

    case FTS3_MATCHINFO_LHITS:
      nVal = pInfo->nCol * pInfo->nPhrase;
      break;

    case FTS3_MATCHINFO_LHITS_BM:
      nVal = pInfo->nPhrase * ((pInfo->nCol + 31) / 32);
      break;

    default:
      assert( cArg==FTS3_MATCHINFO_HITS );
      nVal = pInfo->nCol * pInfo->nPhrase * 3;
      break;
  }

){
  int rc = SQLITE_OK;
  int i;
  Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
  sqlite3_stmt *pSelect = 0;

  for(i=0; rc==SQLITE_OK && zArg[i]; i++){

    pInfo->flag = zArg[i];
    switch( zArg[i] ){
      case FTS3_MATCHINFO_NPHRASE:
        if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nPhrase;
        break;

      case FTS3_MATCHINFO_NCOL:
        if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nCol;

      case FTS3_MATCHINFO_LCS:
        rc = fts3ExprLoadDoclists(pCsr, 0, 0);
        if( rc==SQLITE_OK ){
          rc = fts3MatchinfoLcs(pCsr, pInfo);
        }
        break;

      case FTS3_MATCHINFO_LHITS_BM:
      case FTS3_MATCHINFO_LHITS:
        (void)fts3ExprIterate(pCsr->pExpr, fts3ExprLHitsCb, (void*)pInfo);
      case FTS3_MATCHINFO_LHITS: {
        int nZero = fts3MatchinfoSize(pInfo, zArg[i]) * sizeof(u32);
        memset(pInfo->aMatchinfo, 0, nZero);
        fts3ExprLHitGather(pCsr->pExpr, pInfo);
        break;
      }

      default: {
        Fts3Expr *pExpr;
        assert( zArg[i]==FTS3_MATCHINFO_HITS );
        pExpr = pCsr->pExpr;
        rc = fts3ExprLoadDoclists(pCsr, 0, 0);
        if( rc!=SQLITE_OK ) break;

}


/*
** Populate pCsr->aMatchinfo[] with data for the current row. The 
** 'matchinfo' data is an array of 32-bit unsigned integers (C type u32).
*/
static int fts3GetMatchinfo(
static void fts3GetMatchinfo(
  sqlite3_context *pCtx,        /* Return results here */
  Fts3Cursor *pCsr,               /* FTS3 Cursor object */
  const char *zArg                /* Second argument to matchinfo() function */
){
  MatchInfo sInfo;
  Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
  int rc = SQLITE_OK;
  int bGlobal = 0;                /* Collect 'global' stats as well as local */

  u32 *aOut = 0;
  void (*xDestroyOut)(void*) = 0;

  memset(&sInfo, 0, sizeof(MatchInfo));
  sInfo.pCursor = pCsr;
  sInfo.nCol = pTab->nColumn;

  /* If there is cached matchinfo() data, but the format string for the 
  ** cache does not match the format string for this request, discard 
  ** the cached data. */
  if( pCsr->zMatchinfo && strcmp(pCsr->zMatchinfo, zArg) ){
  if( pCsr->pMIBuffer && strcmp(pCsr->pMIBuffer->zMatchinfo, zArg) ){
    assert( pCsr->aMatchinfo );
    sqlite3_free(pCsr->aMatchinfo);
    pCsr->zMatchinfo = 0;
    sqlite3Fts3MIBufferFree(pCsr->pMIBuffer);
    pCsr->pMIBuffer = 0;
    pCsr->aMatchinfo = 0;
  }

  /* If Fts3Cursor.aMatchinfo[] is NULL, then this is the first time the
  /* If Fts3Cursor.pMIBuffer is NULL, then this is the first time the
  ** matchinfo function has been called for this query. In this case 
  ** allocate the array used to accumulate the matchinfo data and
  ** initialize those elements that are constant for every row.
  */
  if( pCsr->aMatchinfo==0 ){
  if( pCsr->pMIBuffer==0 ){
    int nMatchinfo = 0;           /* Number of u32 elements in match-info */
    int nArg;                     /* Bytes in zArg */
    int i;                        /* Used to iterate through zArg */

    /* Determine the number of phrases in the query */
    pCsr->nPhrase = fts3ExprPhraseCount(pCsr->pExpr);
    sInfo.nPhrase = pCsr->nPhrase;

    /* Determine the number of integers in the buffer returned by this call. */
    for(i=0; zArg[i]; i++){
      char *zErr = 0;
      if( fts3MatchinfoCheck(pTab, zArg[i], &zErr) ){
        sqlite3_result_error(pCtx, zErr, -1);
        sqlite3_free(zErr);
        return;
      }
      nMatchinfo += fts3MatchinfoSize(&sInfo, zArg[i]);
    }

    /* Allocate space for Fts3Cursor.aMatchinfo[] and Fts3Cursor.zMatchinfo. */
    nArg = (int)strlen(zArg);
    pCsr->pMIBuffer = fts3MIBufferNew(nMatchinfo, zArg);
    pCsr->aMatchinfo = (u32 *)sqlite3_malloc(sizeof(u32)*nMatchinfo + nArg + 1);
    if( !pCsr->aMatchinfo ) return SQLITE_NOMEM;
    if( !pCsr->pMIBuffer ) rc = SQLITE_NOMEM;

    pCsr->zMatchinfo = (char *)&pCsr->aMatchinfo[nMatchinfo];
    pCsr->nMatchinfo = nMatchinfo;
    memcpy(pCsr->zMatchinfo, zArg, nArg+1);
    memset(pCsr->aMatchinfo, 0, sizeof(u32)*nMatchinfo);
    pCsr->isMatchinfoNeeded = 1;
    bGlobal = 1;
  }

  if( rc==SQLITE_OK ){
    xDestroyOut = fts3MIBufferAlloc(pCsr->pMIBuffer, &aOut);
    if( xDestroyOut==0 ){
      rc = SQLITE_NOMEM;
    }
  }

  if( rc==SQLITE_OK ){
  sInfo.aMatchinfo = pCsr->aMatchinfo;
  sInfo.nPhrase = pCsr->nPhrase;
    sInfo.aMatchinfo = aOut;
    sInfo.nPhrase = pCsr->nPhrase;
  if( pCsr->isMatchinfoNeeded ){
    rc = fts3MatchinfoValues(pCsr, bGlobal, &sInfo, zArg);
    if( bGlobal ){
    pCsr->isMatchinfoNeeded = 0;
  }

  return rc;
      fts3MIBufferSetGlobal(pCsr->pMIBuffer);
    }
  }

  if( rc!=SQLITE_OK ){
    sqlite3_result_error_code(pCtx, rc);
    if( xDestroyOut ) xDestroyOut(aOut);
  }else{
    int n = pCsr->pMIBuffer->nElem * sizeof(u32);
    sqlite3_result_blob(pCtx, aOut, n, xDestroyOut);
  }
}

/*
** Implementation of snippet() function.
*/
void sqlite3Fts3Snippet(
  sqlite3_context *pCtx,          /* SQLite function call context */

    /* Initialize the contents of sCtx.aTerm[] for column iCol. There is 
    ** no way that this operation can fail, so the return code from
    ** fts3ExprIterate() can be discarded.
    */
    sCtx.iCol = iCol;
    sCtx.iTerm = 0;
    (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void *)&sCtx);
    (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void*)&sCtx);

    /* Retreive the text stored in column iCol. If an SQL NULL is stored 
    ** in column iCol, jump immediately to the next iteration of the loop.
    ** If an OOM occurs while retrieving the data (this can happen if SQLite
    ** needs to transform the data from utf-16 to utf-8), return SQLITE_NOMEM 
    ** to the caller. 
    */

*/
void sqlite3Fts3Matchinfo(
  sqlite3_context *pContext,      /* Function call context */
  Fts3Cursor *pCsr,               /* FTS3 table cursor */
  const char *zArg                /* Second arg to matchinfo() function */
){
  Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab;
  int rc;
  int i;
  const char *zFormat;

  if( zArg ){
    for(i=0; zArg[i]; i++){
      char *zErr = 0;
      if( fts3MatchinfoCheck(pTab, zArg[i], &zErr) ){
        sqlite3_result_error(pContext, zErr, -1);
        sqlite3_free(zErr);
        return;
      }
    }
    zFormat = zArg;
  }else{
    zFormat = FTS3_MATCHINFO_DEFAULT;
  }

  if( !pCsr->pExpr ){
    sqlite3_result_blob(pContext, "", 0, SQLITE_STATIC);
    return;
  }
  }else{

  /* Retrieve matchinfo() data. */
  rc = fts3GetMatchinfo(pCsr, zFormat);
  sqlite3Fts3SegmentsClose(pTab);
    /* Retrieve matchinfo() data. */
    fts3GetMatchinfo(pContext, pCsr, zFormat);
    sqlite3Fts3SegmentsClose(pTab);

  if( rc!=SQLITE_OK ){
    sqlite3_result_error_code(pContext, rc);
  }else{
    int n = pCsr->nMatchinfo * sizeof(u32);
    sqlite3_result_blob(pContext, pCsr->aMatchinfo, n, SQLITE_TRANSIENT);
  }
}

#endif

#-------------------------------------------------------------------------
# Test the example 2d "circle" geometry callback.
#
register_circle_geom db

breakpoint
do_execsql_test rtree9-5.1 {
  CREATE VIRTUAL TABLE rt2 USING rtree(id, xmin, xmax, ymin, ymax);

  INSERT INTO rt2 VALUES(1,    1,   2,  1,  2);
  INSERT INTO rt2 VALUES(2,    1,   2, -2, -1);
  INSERT INTO rt2 VALUES(3,    -2, -1, -2, -1);
  INSERT INTO rt2 VALUES(4,    -2, -1,  1,  2);

  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h
EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/userauth/sqlite3userauth.h

# executables needed for testing
#
TESTPROGS = \
  testfixture$(EXE) \
  sqlite3$(EXE) \
  sqlite3_analyzer$(EXE) \
  sqldiff$(EXE)

# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	sqlite3.h libsqlite3.a sqlite3$(EXE)

libsqlite3.a:	$(LIBOBJ)

fts3-testfixture$(EXE): sqlite3.c fts3amal.c $(TESTSRC) $(TOP)/src/tclsqlite.c
	$(TCCX) $(TCL_FLAGS) -DTCLSH=1 $(TESTFIXTURE_FLAGS)                  \
	-DSQLITE_ENABLE_FTS3=1                                               \
		$(TESTSRC) $(TOP)/src/tclsqlite.c sqlite3.c fts3amal.c       \
		-o testfixture$(EXE) $(LIBTCL) $(THREADLIB)

fulltest:	testfixture$(EXE) sqlite3$(EXE) fuzztest
fulltest:	$(TESTPROGS) fuzztest
	./testfixture$(EXE) $(TOP)/test/all.test

soaktest:	testfixture$(EXE) sqlite3$(EXE) fuzzoomtest
soaktest:	$(TESTPROGS) fuzzoomtest
	./testfixture$(EXE) $(TOP)/test/all.test -soak=1

fulltestonly:	testfixture$(EXE) sqlite3$(EXE) fuzztest
fulltestonly:	$(TESTPROGS) fuzztest
	./testfixture$(EXE) $(TOP)/test/full.test

queryplantest:	testfixture$(EXE) sqlite3$(EXE)
	./testfixture$(EXE) $(TOP)/test/permutations.test queryplanner

fuzztest:	fuzzershell$(EXE)
	./fuzzershell$(EXE) $(TOP)/test/fuzzdata1.txt $(TOP)/test/fuzzdata2.txt

fuzzoomtest:	fuzzershell$(EXE)
	./fuzzershell$(EXE) -f $(TOP)/test/fuzzdata1.txt --oom

test:	testfixture$(EXE) sqlite3$(EXE) fuzztest
test:	$(TESTPROGS) fuzztest
	./testfixture$(EXE) $(TOP)/test/veryquick.test

# Run a test using valgrind.  This can take a really long time
# because valgrind is so much slower than a native machine.
#
valgrindtest:	testfixture$(EXE) sqlite3$(EXE) fuzzershell$(EXE)
valgrindtest:	$(TESTPROGS) fuzzershell$(EXE)
	valgrind -v ./fuzzershell$(EXE) -f $(TOP)/test/fuzzdata1.txt
	OMIT_MISUSE=1 valgrind -v ./testfixture$(EXE) $(TOP)/test/permutations.test valgrind

# A very fast test that checks basic sanity.  The name comes from
# the 60s-era electronics testing:  "Turn it on and see if smoke
# comes out."
#
smoketest:	$(TESTPROGS) fuzzershell$(EXE)
	./testfixture$(EXE) $(TOP)/test/main.test

# The next two rules are used to support the "threadtest" target. Building
# threadtest runs a few thread-safety tests that are implemented in C. This
# target is invoked by the releasetest.tcl script.
# 
THREADTEST3_SRC = $(TOP)/test/threadtest3.c    \
                  $(TOP)/test/tt3_checkpoint.c \

	rm -f wordcount wordcount.exe
	rm -f sqlite3.c sqlite3-*.c fts?amal.c tclsqlite3.c
	rm -f sqlite3rc.h
	rm -f shell.c sqlite3ext.h
	rm -f sqlite3_analyzer sqlite3_analyzer.exe sqlite3_analyzer.c
	rm -f sqlite-*-output.vsix
	rm -f mptester mptester.exe
	rm -f fuzzershell fuzzershell.exe
	rm -f sqldiff sqldiff.exe

  "ENABLE_ATOMIC_WRITE",
#endif
#if SQLITE_ENABLE_CEROD
  "ENABLE_CEROD",
#endif
#if SQLITE_ENABLE_COLUMN_METADATA
  "ENABLE_COLUMN_METADATA",
#endif
#if SQLITE_ENABLE_DBSTAT_VTAB
  "ENABLE_DBSTAT_VTAB",
#endif
#if SQLITE_ENABLE_EXPENSIVE_ASSERT
  "ENABLE_EXPENSIVE_ASSERT",
#endif
#if SQLITE_ENABLE_FTS1
  "ENABLE_FTS1",
#endif

**
** The dbstat virtual table is used to extract low-level formatting
** information from an SQLite database in order to implement the
** "sqlite3_analyzer" utility.  See the ../tool/spaceanal.tcl script
** for an example implementation.
*/

#include "sqliteInt.h"   /* Requires access to internal data structures */
#if (defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST)) \
    && !defined(SQLITE_OMIT_VIRTUALTABLE)
#include "sqliteInt.h"   /* Requires access to internal data structures */

/*
** Page paths:
** 
**   The value of the 'path' column describes the path taken from the 
**   root-node of the b-tree structure to each page. The value of the 
**   root-node path is '/'.

  i64 iOffset;                    /* Value of 'pgOffset' column */
  int szPage;                     /* Value of 'pgSize' column */
};

struct StatTable {
  sqlite3_vtab base;
  sqlite3 *db;
  int iDb;                        /* Index of database to analyze */
};

#ifndef get2byte
# define get2byte(x)   ((x)[0]<<8 | (x)[1])
#endif

/*
** Connect to or create a statvfs virtual table.
*/
static int statConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  StatTable *pTab = 0;
  int rc = SQLITE_OK;
  int iDb;

  if( argc>=4 ){
    iDb = sqlite3FindDbName(db, argv[3]);
    if( iDb<0 ){
      *pzErr = sqlite3_mprintf("no such database: %s", argv[3]);
      return SQLITE_ERROR;
    }
  }else{
    iDb = 0;
  }
  rc = sqlite3_declare_vtab(db, VTAB_SCHEMA);
  if( rc==SQLITE_OK ){
    pTab = (StatTable *)sqlite3_malloc64(sizeof(StatTable));
    if( pTab==0 ) rc = SQLITE_NOMEM;
  }

  assert( rc==SQLITE_OK || pTab==0 );
  if( rc==SQLITE_OK ){
    memset(pTab, 0, sizeof(StatTable));
    pTab->db = db;
    pTab->iDb = iDb;
  }

  *ppVtab = (sqlite3_vtab*)pTab;
  return rc;
}

/*

  StatCursor *pCsr;
  int rc;

  pCsr = (StatCursor *)sqlite3_malloc64(sizeof(StatCursor));
  if( pCsr==0 ){
    rc = SQLITE_NOMEM;
  }else{
    char *zSql;
    memset(pCsr, 0, sizeof(StatCursor));
    pCsr->base.pVtab = pVTab;

    rc = sqlite3_prepare_v2(pTab->db, 
    zSql = sqlite3_mprintf(
        "SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type"
        "  UNION ALL  "
        "SELECT name, rootpage, type FROM sqlite_master WHERE rootpage!=0"
        "  ORDER BY name", -1,
        &pCsr->pStmt, 0
        );
        "SELECT name, rootpage, type"
        "  FROM \"%w\".sqlite_master WHERE rootpage!=0"
        "  ORDER BY name", pTab->db->aDb[pTab->iDb].zName);
    if( zSql==0 ){
      rc = SQLITE_NOMEM;
    }else{
      rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pStmt, 0);
      sqlite3_free(zSql);
    }
    if( rc!=SQLITE_OK ){
      sqlite3_free(pCsr);
      pCsr = 0;
    }
  }

  *ppCursor = (sqlite3_vtab_cursor *)pCsr;

/*
** Populate the pCsr->iOffset and pCsr->szPage member variables. Based on
** the current value of pCsr->iPageno.
*/
static void statSizeAndOffset(StatCursor *pCsr){
  StatTable *pTab = (StatTable *)((sqlite3_vtab_cursor *)pCsr)->pVtab;
  Btree *pBt = pTab->db->aDb[0].pBt;
  Btree *pBt = pTab->db->aDb[pTab->iDb].pBt;
  Pager *pPager = sqlite3BtreePager(pBt);
  sqlite3_file *fd;
  sqlite3_int64 x[2];

  /* The default page size and offset */
  pCsr->szPage = sqlite3BtreeGetPageSize(pBt);
  pCsr->iOffset = (i64)pCsr->szPage * (pCsr->iPageno - 1);

  /* If connected to a ZIPVFS backend, override the page size and
  ** offset with actual values obtained from ZIPVFS.
  */
  fd = sqlite3PagerFile(pPager);
  x[0] = pCsr->iPageno;
  if( sqlite3OsFileControl(fd, 230440, &x)==SQLITE_OK ){
  if( fd->pMethods!=0 && sqlite3OsFileControl(fd, 230440, &x)==SQLITE_OK ){
    pCsr->iOffset = x[0];
    pCsr->szPage = (int)x[1];
  }
}

/*
** Move a statvfs cursor to the next entry in the file.
*/
static int statNext(sqlite3_vtab_cursor *pCursor){
  int rc;
  int nPayload;
  char *z;
  StatCursor *pCsr = (StatCursor *)pCursor;
  StatTable *pTab = (StatTable *)pCursor->pVtab;
  Btree *pBt = pTab->db->aDb[0].pBt;
  Btree *pBt = pTab->db->aDb[pTab->iDb].pBt;
  Pager *pPager = sqlite3BtreePager(pBt);

  sqlite3_free(pCsr->zPath);
  pCsr->zPath = 0;

statNextRestart:
  if( pCsr->aPage[0].pPg==0 ){
    rc = sqlite3_step(pCsr->pStmt);
    if( rc==SQLITE_ROW ){
      int nPage;
      u32 iRoot = (u32)sqlite3_column_int64(pCsr->pStmt, 1);
      sqlite3PagerPagecount(pPager, &nPage);
      if( nPage==0 ){
        pCsr->isEof = 1;
        return sqlite3_reset(pCsr->pStmt);
      }
      rc = sqlite3PagerGet(pPager, iRoot, &pCsr->aPage[0].pPg);
      pCsr->aPage[0].iPgno = iRoot;
      pCsr->aPage[0].iCell = 0;
      pCsr->aPage[0].zPath = sqlite3_mprintf("/");
      pCsr->aPage[0].zPath = z = sqlite3_mprintf("/");
      pCsr->iPage = 0;
      if( z==0 ) rc = SQLITE_NOMEM;
    }else{
      pCsr->isEof = 1;
      return sqlite3_reset(pCsr->pStmt);
    }
  }else{

    /* Page p itself has already been visited. */

                        sqlite3BtreeGetReserveNoMutex(pBt);
        sqlite3BtreeLeave(pBt);
        pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0);
        pCsr->iPageno = pCell->aOvfl[pCell->iOvfl];
        pCsr->zPagetype = "overflow";
        pCsr->nCell = 0;
        pCsr->nMxPayload = 0;
        pCsr->zPath = sqlite3_mprintf(
        pCsr->zPath = z = sqlite3_mprintf(
            "%s%.3x+%.6x", p->zPath, p->iCell, pCell->iOvfl
        );
        if( pCell->iOvfl<pCell->nOvfl-1 ){
          pCsr->nUnused = 0;
          pCsr->nPayload = nUsable - 4;
        }else{
          pCsr->nPayload = pCell->nLastOvfl;
          pCsr->nUnused = nUsable - 4 - pCsr->nPayload;
        }
        pCell->iOvfl++;
        statSizeAndOffset(pCsr);
        return SQLITE_OK;
        return z==0 ? SQLITE_NOMEM : SQLITE_OK;
      }
      if( p->iRightChildPg ) break;
      p->iCell++;
    }

    if( !p->iRightChildPg || p->iCell>p->nCell ){
      statClearPage(p);

    if( p->iCell==p->nCell ){
      p[1].iPgno = p->iRightChildPg;
    }else{
      p[1].iPgno = p->aCell[p->iCell].iChildPg;
    }
    rc = sqlite3PagerGet(pPager, p[1].iPgno, &p[1].pPg);
    p[1].iCell = 0;
    p[1].zPath = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell);
    p[1].zPath = z = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell);
    p->iCell++;
    if( z==0 ) rc = SQLITE_NOMEM;
  }


  /* Populate the StatCursor fields with the values to be returned
  ** by the xColumn() and xRowid() methods.
  */
  if( rc==SQLITE_OK ){

        default:
          pCsr->zPagetype = "corrupted";
          break;
      }
      pCsr->nCell = p->nCell;
      pCsr->nUnused = p->nUnused;
      pCsr->nMxPayload = p->nMxPayload;
      pCsr->zPath = sqlite3_mprintf("%s", p->zPath);
      pCsr->zPath = z = sqlite3_mprintf("%s", p->zPath);
      if( z==0 ) rc = SQLITE_NOMEM;
      nPayload = 0;
      for(i=0; i<p->nCell; i++){
        nPayload += p->aCell[i].nLocal;
      }
      pCsr->nPayload = nPayload;
    }
  }

  sqlite3_vtab_cursor *pCursor, 
  sqlite3_context *ctx, 
  int i
){
  StatCursor *pCsr = (StatCursor *)pCursor;
  switch( i ){
    case 0:            /* name */
      sqlite3_result_text(ctx, pCsr->zName, -1, SQLITE_STATIC);
      sqlite3_result_text(ctx, pCsr->zName, -1, SQLITE_TRANSIENT);
      break;
    case 1:            /* path */
      sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT);
      break;
    case 2:            /* pageno */
      sqlite3_result_int64(ctx, pCsr->iPageno);
      break;

      break;
    case 7:            /* mx_payload */
      sqlite3_result_int(ctx, pCsr->nMxPayload);
      break;
    case 8:            /* pgoffset */
      sqlite3_result_int64(ctx, pCsr->iOffset);
      break;
    case 9:            /* pgsize */
    default:           /* pgsize */
      assert( i==9 );
      sqlite3_result_int(ctx, pCsr->szPage);
      break;
  }
  return SQLITE_OK;
}

static int statRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
  StatCursor *pCsr = (StatCursor *)pCursor;
  *pRowid = pCsr->iPageno;
  return SQLITE_OK;
}

/*
** Invoke this routine to register the "dbstat" virtual table module
*/
int sqlite3_dbstat_register(sqlite3 *db){
int sqlite3DbstatRegister(sqlite3 *db){
  static sqlite3_module dbstat_module = {
    0,                            /* iVersion */
    statConnect,                  /* xCreate */
    statConnect,                  /* xConnect */
    statBestIndex,                /* xBestIndex */
    statDisconnect,               /* xDisconnect */
    statDisconnect,               /* xDestroy */

    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindMethod */
    0,                            /* xRename */
  };
  return sqlite3_create_module(db, "dbstat", &dbstat_module, 0);
}
#elif defined(SQLITE_ENABLE_DBSTAT_VTAB)
int sqlite3DbstatRegister(sqlite3 *db){ return SQLITE_OK; }
#endif /* SQLITE_ENABLE_DBSTAT_VTAB */

  if( !db->mallocFailed && rc==SQLITE_OK){
    rc = sqlite3RtreeInit(db);
  }
#endif

#ifdef SQLITE_ENABLE_DBSTAT_VTAB
  if( !db->mallocFailed && rc==SQLITE_OK){
    int sqlite3_dbstat_register(sqlite3*);
    rc = sqlite3_dbstat_register(db);
    rc = sqlite3DbstatRegister(db);
  }
#endif

  /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking
  ** mode.  -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking
  ** mode.  Doing nothing at all also makes NORMAL the default.
  */

  memset(&mem0, 0, sizeof(mem0));
}

/*
** Return the amount of memory currently checked out.
*/
sqlite3_int64 sqlite3_memory_used(void){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0);
  sqlite3_int64 res, mx;
  sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &res, &mx, 0);
  res = (sqlite3_int64)n;  /* Work around bug in Borland C. Ticket #3216 */
  return res;
}

/*
** Return the maximum amount of memory that has ever been
** checked out since either the beginning of this process
** or since the most recent reset.
*/
sqlite3_int64 sqlite3_memory_highwater(int resetFlag){
  int n, mx;
  sqlite3_int64 res;
  sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag);
  sqlite3_int64 res, mx;
  sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &res, &mx, resetFlag);
  res = (sqlite3_int64)mx;  /* Work around bug in Borland C. Ticket #3216 */
  return res;
  return mx;
}

/*
** Trigger the alarm 
*/
static void sqlite3MallocAlarm(int nByte){
  void (*xCallback)(void*,sqlite3_int64,int);

    n += sizeof(i);
  }
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
  if( sizeof(UUID)<=nBuf-n ){
    UUID id;
    memset(&id, 0, sizeof(UUID));
    osUuidCreate(&id);
    memcpy(zBuf, &id, sizeof(UUID));
    memcpy(&zBuf[n], &id, sizeof(UUID));
    n += sizeof(UUID);
  }
  if( sizeof(UUID)<=nBuf-n ){
    UUID id;
    memset(&id, 0, sizeof(UUID));
    osUuidCreateSequential(&id);
    memcpy(zBuf, &id, sizeof(UUID));
    memcpy(&zBuf[n], &id, sizeof(UUID));
    n += sizeof(UUID);
  }
#endif
#endif /* defined(SQLITE_TEST) || defined(SQLITE_ZERO_PRNG_SEED) */
  return n;
}

        fprintf(stderr, "unknown limit: \"%s\"\n"
                        "enter \".limits\" with no arguments for a list.\n",
                         azArg[1]);
        rc = 1;
        goto meta_command_exit;
      }
      if( nArg==3 ){
        sqlite3_limit(p->db, aLimit[iLimit].limitCode, integerValue(azArg[2]));
        sqlite3_limit(p->db, aLimit[iLimit].limitCode,
                      (int)integerValue(azArg[2]));
      }
      printf("%20s %d\n", aLimit[iLimit].zLimitName,
             sqlite3_limit(p->db, aLimit[iLimit].limitCode, -1));
    }
  }else

#ifndef SQLITE_OMIT_LOAD_EXTENSION

#define SQLITE3_TEXT     3

/*
** CAPI3REF: Result Values From A Query
** KEYWORDS: {column access functions}
** METHOD: sqlite3_stmt
**
** These routines form the "result set" interface.
**
** ^These routines return information about a single column of the current
** result row of a query.  ^In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned. ^The leftmost column of the result set has the index 0.
** ^The number of columns in the result can be determined using

** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
** even empty strings, are always zero-terminated.  ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
**
** ^The object returned by [sqlite3_column_value()] is an
** [unprotected sqlite3_value] object.  An unprotected sqlite3_value object
** may only be used with [sqlite3_bind_value()] and [sqlite3_result_value()].
** <b>Warning:</b> ^The object returned by [sqlite3_column_value()] is an
** [unprotected sqlite3_value] object.  In a multithreaded environment,
** an unprotected sqlite3_value object may only be used safely with
** [sqlite3_bind_value()] and [sqlite3_result_value()].
** If the [unprotected sqlite3_value] object returned by
** [sqlite3_column_value()] is used in any other way, including calls
** to routines like [sqlite3_value_int()], [sqlite3_value_text()],
** or [sqlite3_value_bytes()], then the behavior is undefined.
** or [sqlite3_value_bytes()], the behavior is not threadsafe.
**
** These routines attempt to convert the value where appropriate.  ^For
** example, if the internal representation is FLOAT and a text result
** is requested, [sqlite3_snprintf()] is used internally to perform the
** conversion automatically.  ^(The following table details the conversions
** that are applied:
**

** <tr><td>  TEXT    <td>   BLOB    <td> No change
** <tr><td>  BLOB    <td> INTEGER   <td> [CAST] to INTEGER
** <tr><td>  BLOB    <td>  FLOAT    <td> [CAST] to REAL
** <tr><td>  BLOB    <td>   TEXT    <td> Add a zero terminator if needed
** </table>
** </blockquote>)^
**
** The table above makes reference to standard C library functions atoi()
** and atof().  SQLite does not really use these functions.  It has its
** own equivalent internal routines.  The atoi() and atof() names are
** used in the table for brevity and because they are familiar to most
** C programmers.
**
** Note that when type conversions occur, pointers returned by prior
** calls to sqlite3_column_blob(), sqlite3_column_text(), and/or
** sqlite3_column_text16() may be invalidated.
** Type conversions and pointer invalidations might occur
** in the following cases:
**
** <ul>

**
** ^Conversions between UTF-16be and UTF-16le are always done in place and do
** not invalidate a prior pointer, though of course the content of the buffer
** that the prior pointer references will have been modified.  Other kinds
** of conversion are done in place when it is possible, but sometimes they
** are not possible and in those cases prior pointers are invalidated.
**
** The safest and easiest to remember policy is to invoke these routines
** The safest policy is to invoke these routines
** in one of the following ways:
**
** <ul>
**  <li>sqlite3_column_text() followed by sqlite3_column_bytes()</li>
**  <li>sqlite3_column_blob() followed by sqlite3_column_bytes()</li>
**  <li>sqlite3_column_text16() followed by sqlite3_column_bytes16()</li>
** </ul>
**
** In other words, you should call sqlite3_column_text(),
** sqlite3_column_blob(), or sqlite3_column_text16() first to force the result
** into the desired format, then invoke sqlite3_column_bytes() or
** sqlite3_column_bytes16() to find the size of the result.  Do not mix calls
** to sqlite3_column_text() or sqlite3_column_blob() with calls to
** sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16()
** with calls to sqlite3_column_bytes().
**
** ^The pointers returned are valid until a type conversion occurs as
** described above, or until [sqlite3_step()] or [sqlite3_reset()] or
** [sqlite3_finalize()] is called.  ^The memory space used to hold strings
** and BLOBs is freed automatically.  Do <b>not</b> pass the pointers returned
** and BLOBs is freed automatically.  Do <em>not</em> pass the pointers returned
** from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
** [sqlite3_free()].
**
** ^(If a memory allocation error occurs during the evaluation of any
** of these routines, a default value is returned.  The default value
** is either the integer 0, the floating point number 0.0, or a NULL
** pointer.  Subsequent calls to [sqlite3_errcode()] will return

/*
** Threading interface
*/
#if SQLITE_MAX_WORKER_THREADS>0
int sqlite3ThreadCreate(SQLiteThread**,void*(*)(void*),void*);
int sqlite3ThreadJoin(SQLiteThread*, void**);
#endif

#if defined(SQLITE_ENABLE_DBSTAT_VTAB) || defined(SQLITE_TEST)
int sqlite3DbstatRegister(sqlite3*);
#endif

#endif /* _SQLITEINT_H_ */

  }
  Tcl_SetResult(interp, zBuf, TCL_VOLATILE);

  return TCL_OK;
}
#endif /* SQLITE_TEST */

#if defined(SQLITE_TEST) || defined(SQLITE_ENABLE_DBSTAT_VTAB)
/*
** tclcmd:   register_dbstat_vtab DB
**
** Cause the dbstat virtual table to be available on the connection DB
*/
static int sqlite3RegisterDbstatCmd(
  void *clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
#ifdef SQLITE_OMIT_VIRTUALTABLE
  Tcl_AppendResult(interp, "dbstat not available because of "
                           "SQLITE_OMIT_VIRTUALTABLE", (void*)0);
  return TCL_ERROR;
#else
  struct SqliteDb { sqlite3 *db; };
  char *zDb;
  Tcl_CmdInfo cmdInfo;

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "DB");
    return TCL_ERROR;
  }

  zDb = Tcl_GetString(objv[1]);
  if( Tcl_GetCommandInfo(interp, zDb, &cmdInfo) ){
    int sqlite3_dbstat_register(sqlite3*);
    sqlite3* db = ((struct SqliteDb*)cmdInfo.objClientData)->db;
    sqlite3_dbstat_register(db);
  }
  return TCL_OK;
#endif /* SQLITE_OMIT_VIRTUALTABLE */
}
#endif /* defined(SQLITE_TEST) || defined(SQLITE_ENABLE_DBSTAT_VTAB) */

/*
** Configure the interpreter passed as the first argument to have access
** to the commands and linked variables that make up:
**
**   * the [sqlite3] extension itself, 
**
**   * If SQLITE_TCLMD5 or SQLITE_TEST is defined, the Md5 commands, and
**
**   * If SQLITE_TEST is set, the various test interfaces used by the Tcl
**     test suite.
*/
static void init_all(Tcl_Interp *interp){
  Sqlite3_Init(interp);

#if defined(SQLITE_TEST) || defined(SQLITE_TCLMD5)
  Md5_Init(interp);
#endif

  /* Install the [register_dbstat_vtab] command to access the implementation
  ** of virtual table dbstat (source file test_stat.c). This command is
  ** required for testfixture and sqlite3_analyzer, but not by the production
  ** Tcl extension.  */
#if defined(SQLITE_TEST) || defined(SQLITE_ENABLE_DBSTAT_VTAB)
  Tcl_CreateObjCommand(
      interp, "register_dbstat_vtab", sqlite3RegisterDbstatCmd, 0, 0
  );
#endif

#ifdef SQLITE_TEST
  {
    extern int Sqliteconfig_Init(Tcl_Interp*);
    extern int Sqlitetest1_Init(Tcl_Interp*);
    extern int Sqlitetest2_Init(Tcl_Interp*);

    case 4: {
      Tcl_Panic("Deliberate panic");
      break;
    }
  }
  return TCL_OK;
}  
  

/*
** tclcmd:   register_dbstat_vtab DB
**
** Cause the dbstat virtual table to be available on the connection DB
*/
static int test_register_dbstat_vtab(
  void *clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *CONST objv[]
){
#ifdef SQLITE_OMIT_VIRTUALTABLE
  Tcl_AppendResult(interp, "dbstat not available because of "
                           "SQLITE_OMIT_VIRTUALTABLE", (void*)0);
  return TCL_ERROR;
#else
  struct SqliteDb { sqlite3 *db; };
  char *zDb;
  Tcl_CmdInfo cmdInfo;

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "DB");
    return TCL_ERROR;
  }

  zDb = Tcl_GetString(objv[1]);
  if( Tcl_GetCommandInfo(interp, zDb, &cmdInfo) ){
    sqlite3* db = ((struct SqliteDb*)cmdInfo.objClientData)->db;
    sqlite3DbstatRegister(db);
  }
  return TCL_OK;
#endif /* SQLITE_OMIT_VIRTUALTABLE */
}

/*
** Register commands with the TCL interpreter.
*/
int Sqlitetest1_Init(Tcl_Interp *interp){
  extern int sqlite3_search_count;
  extern int sqlite3_found_count;

  };
  static struct {
     char *zName;
     Tcl_ObjCmdProc *xProc;
     void *clientData;
  } aObjCmd[] = {
     { "bad_behavior",                  test_bad_behavior,  (void*)&iZero },
     { "register_dbstat_vtab",          test_register_dbstat_vtab  },
     { "sqlite3_connection_pointer",    get_sqlite_pointer, 0 },
     { "sqlite3_bind_int",              test_bind_int,      0 },
     { "sqlite3_bind_zeroblob",         test_bind_zeroblob, 0 },
     { "sqlite3_bind_int64",            test_bind_int64,    0 },
     { "sqlite3_bind_double",           test_bind_double,   0 },
     { "sqlite3_bind_null",             test_bind_null     ,0 },
     { "sqlite3_bind_text",             test_bind_text     ,0 },

** "=", "<", ">", "<=", ">=", "IN", and "IS NULL"
*/
static int allowedOp(int op){
  assert( TK_GT>TK_EQ && TK_GT<TK_GE );
  assert( TK_LT>TK_EQ && TK_LT<TK_GE );
  assert( TK_LE>TK_EQ && TK_LE<TK_GE );
  assert( TK_GE==TK_EQ+4 );
  return op==TK_IN || (op>=TK_EQ && op<=TK_GE) || op==TK_ISNULL;
  return op==TK_IN || (op>=TK_EQ && op<=TK_GE) || op==TK_ISNULL || op==TK_IS;
}

/*
** Commute a comparison operator.  Expressions of the form "X op Y"
** are converted into "Y op X".
**
** If left/right precedence rules come into play when determining the

static u16 operatorMask(int op){
  u16 c;
  assert( allowedOp(op) );
  if( op==TK_IN ){
    c = WO_IN;
  }else if( op==TK_ISNULL ){
    c = WO_ISNULL;
  }else if( op==TK_IS ){
    c = WO_IS;
  }else{
    assert( (WO_EQ<<(op-TK_EQ)) < 0x7fff );
    c = (u16)(WO_EQ<<(op-TK_EQ));
  }
  assert( op!=TK_ISNULL || c==WO_ISNULL );
  assert( op!=TK_IN || c==WO_IN );
  assert( op!=TK_EQ || c==WO_EQ );
  assert( op!=TK_LT || c==WO_LT );
  assert( op!=TK_LE || c==WO_LE );
  assert( op!=TK_GT || c==WO_GT );
  assert( op!=TK_GE || c==WO_GE );
  assert( op!=TK_IS || c==WO_IS );
  return c;
}

/*
** Advance to the next WhereTerm that matches according to the criteria
** established when the pScan object was initialized by whereScanInit().
** Return NULL if there are no more matching WhereTerms.

              pColl = sqlite3BinaryCompareCollSeq(pParse,
                                                  pX->pLeft, pX->pRight);
              if( pColl==0 ) pColl = pParse->db->pDfltColl;
              if( sqlite3StrICmp(pColl->zName, pScan->zCollName) ){
                continue;
              }
            }
            if( (pTerm->eOperator & WO_EQ)!=0
            if( (pTerm->eOperator & (WO_EQ|WO_IS))!=0
             && (pX = pTerm->pExpr->pRight)->op==TK_COLUMN
             && pX->iTable==pScan->aEquiv[0]
             && pX->iColumn==pScan->aEquiv[1]
            ){
              testcase( pTerm->eOperator & WO_IS );
              continue;
            }
            pScan->k = k+1;
            return pTerm;
          }
        }
      }

  Index *pIdx           /* Must be compatible with this index, if not NULL */
){
  WhereTerm *pResult = 0;
  WhereTerm *p;
  WhereScan scan;

  p = whereScanInit(&scan, pWC, iCur, iColumn, op, pIdx);
  op &= WO_EQ|WO_IS;
  while( p ){
    if( (p->prereqRight & notReady)==0 ){
      if( p->prereqRight==0 && (p->eOperator&WO_EQ)!=0 ){
      if( p->prereqRight==0 && (p->eOperator&op)!=0 ){
        testcase( p->eOperator & WO_IS );
        return p;
      }
      if( pResult==0 ) pResult = p;
    }
    p = whereScanNext(&scan);
  }
  return pResult;

    Expr *pRight = sqlite3ExprSkipCollate(pExpr->pRight);
    u16 opMask = (pTerm->prereqRight & prereqLeft)==0 ? WO_ALL : WO_EQUIV;
    if( pLeft->op==TK_COLUMN ){
      pTerm->leftCursor = pLeft->iTable;
      pTerm->u.leftColumn = pLeft->iColumn;
      pTerm->eOperator = operatorMask(op) & opMask;
    }
    if( op==TK_IS ) pTerm->wtFlags |= TERM_IS;
    if( pRight && pRight->op==TK_COLUMN ){
      WhereTerm *pNew;
      Expr *pDup;
      u16 eExtraOp = 0;        /* Extra bits for pNew->eOperator */
      if( pTerm->leftCursor>=0 ){
        int idxNew;
        pDup = sqlite3ExprDup(db, pExpr, 0);
        if( db->mallocFailed ){
          sqlite3ExprDelete(db, pDup);
          return;
        }
        idxNew = whereClauseInsert(pWC, pDup, TERM_VIRTUAL|TERM_DYNAMIC);
        if( idxNew==0 ) return;
        pNew = &pWC->a[idxNew];
        markTermAsChild(pWC, idxNew, idxTerm);
        pTerm = &pWC->a[idxTerm];
        pTerm->wtFlags |= TERM_COPIED;
        if( pExpr->op==TK_EQ
        if( (op==TK_EQ || op==TK_IS)
         && !ExprHasProperty(pExpr, EP_FromJoin)
         && OptimizationEnabled(db, SQLITE_Transitive)
        ){
          pTerm->eOperator |= WO_EQUIV;
          eExtraOp = WO_EQUIV;
        }
        if( op==TK_IS ) pNew->wtFlags |= TERM_IS;
      }else{
        pDup = pExpr;
        pNew = pTerm;
      }
      exprCommute(pParse, pDup);
      pLeft = sqlite3ExprSkipCollate(pDup->pLeft);
      pNew->leftCursor = pLeft->iTable;

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  /* When sqlite_stat3 histogram data is available an operator of the
  ** form "x IS NOT NULL" can sometimes be evaluated more efficiently
  ** as "x>NULL" if x is not an INTEGER PRIMARY KEY.  So construct a
  ** virtual term of that form.
  **
  ** Note that the virtual term must be tagged with TERM_VNULL.  This
  ** Note that the virtual term must be tagged with TERM_VNULL.
  ** TERM_VNULL tag will suppress the not-null check at the beginning
  ** of the loop.  Without the TERM_VNULL flag, the not-null check at
  ** the start of the loop will prevent any results from being returned.
  */
  if( pExpr->op==TK_NOTNULL
   && pExpr->pLeft->op==TK_COLUMN
   && pExpr->pLeft->iColumn>=0
   && OptimizationEnabled(db, SQLITE_Stat34)
  ){
    Expr *pNewExpr;

static int termCanDriveIndex(
  WhereTerm *pTerm,              /* WHERE clause term to check */
  struct SrcList_item *pSrc,     /* Table we are trying to access */
  Bitmask notReady               /* Tables in outer loops of the join */
){
  char aff;
  if( pTerm->leftCursor!=pSrc->iCursor ) return 0;
  if( (pTerm->eOperator & WO_EQ)==0 ) return 0;
  if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) return 0;
  if( (pTerm->prereqRight & notReady)!=0 ) return 0;
  if( pTerm->u.leftColumn<0 ) return 0;
  aff = pSrc->pTab->aCol[pTerm->u.leftColumn].affinity;
  if( !sqlite3IndexAffinityOk(pTerm->pExpr, aff) ) return 0;
  testcase( pTerm->pExpr->op==TK_IS );
  return 1;
}
#endif


#ifndef SQLITE_OMIT_AUTOMATIC_INDEX
/*

  /* Count the number of possible WHERE clause constraints referring
  ** to this virtual table */
  for(i=nTerm=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
    if( pTerm->leftCursor != pSrc->iCursor ) continue;
    assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) );
    testcase( pTerm->eOperator & WO_IN );
    testcase( pTerm->eOperator & WO_ISNULL );
    testcase( pTerm->eOperator & WO_IS );
    testcase( pTerm->eOperator & WO_ALL );
    if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV))==0 ) continue;
    if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue;
    if( pTerm->wtFlags & TERM_VNULL ) continue;
    nTerm++;
  }

  /* If the ORDER BY clause contains only columns in the current 
  ** virtual table then allocate space for the aOrderBy part of
  ** the sqlite3_index_info structure.

                                                                   pUsage;

  for(i=j=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
    u8 op;
    if( pTerm->leftCursor != pSrc->iCursor ) continue;
    assert( IsPowerOfTwo(pTerm->eOperator & ~WO_EQUIV) );
    testcase( pTerm->eOperator & WO_IN );
    testcase( pTerm->eOperator & WO_IS );
    testcase( pTerm->eOperator & WO_ISNULL );
    testcase( pTerm->eOperator & WO_ALL );
    if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV))==0 ) continue;
    if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue;
    if( pTerm->wtFlags & TERM_VNULL ) continue;
    pIdxCons[j].iColumn = pTerm->u.leftColumn;
    pIdxCons[j].iTermOffset = i;
    op = (u8)pTerm->eOperator & WO_ALL;
    if( op==WO_IN ) op = WO_EQ;
    pIdxCons[j].op = op;
    /* The direct assignment in the previous line is possible only because

  int iTarget         /* Attempt to leave results in this register */
){
  Expr *pX = pTerm->pExpr;
  Vdbe *v = pParse->pVdbe;
  int iReg;                  /* Register holding results */

  assert( iTarget>0 );
  if( pX->op==TK_EQ ){
  if( pX->op==TK_EQ || pX->op==TK_IS ){
    iReg = sqlite3ExprCodeTarget(pParse, pX->pRight, iTarget);
  }else if( pX->op==TK_ISNULL ){
    iReg = iTarget;
    sqlite3VdbeAddOp2(v, OP_Null, 0, iReg);
#ifndef SQLITE_OMIT_SUBQUERY
  }else{
    int eType;

        sqlite3VdbeAddOp2(v, OP_SCopy, r1, regBase+j);
      }
    }
    testcase( pTerm->eOperator & WO_ISNULL );
    testcase( pTerm->eOperator & WO_IN );
    if( (pTerm->eOperator & (WO_ISNULL|WO_IN))==0 ){
      Expr *pRight = pTerm->pExpr->pRight;
      if( sqlite3ExprCanBeNull(pRight) ){
      if( (pTerm->wtFlags & TERM_IS)==0 && sqlite3ExprCanBeNull(pRight) ){
        sqlite3VdbeAddOp2(v, OP_IsNull, regBase+j, pLevel->addrBrk);
        VdbeCoverage(v);
      }
      if( zAff ){
        if( sqlite3CompareAffinity(pRight, zAff[j])==SQLITE_AFF_NONE ){
          zAff[j] = SQLITE_AFF_NONE;
        }

  ** then we cannot use the "t1.a=t2.b" constraint, but we can code
  ** the implied "t1.a=123" constraint.
  */
  for(pTerm=pWC->a, j=pWC->nTerm; j>0; j--, pTerm++){
    Expr *pE, *pEAlt;
    WhereTerm *pAlt;
    if( pTerm->wtFlags & (TERM_VIRTUAL|TERM_CODED) ) continue;
    if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) continue;
    if( pTerm->eOperator!=(WO_EQUIV|WO_EQ) ) continue;
    if( (pTerm->eOperator & WO_EQUIV)==0 ) continue;
    if( pTerm->leftCursor!=iCur ) continue;
    if( pLevel->iLeftJoin ) continue;
    pE = pTerm->pExpr;
    assert( !ExprHasProperty(pE, EP_FromJoin) );
    assert( (pTerm->prereqRight & pLevel->notReady)!=0 );
    pAlt = findTerm(pWC, iCur, pTerm->u.leftColumn, notReady, WO_EQ|WO_IN, 0);
    pAlt = findTerm(pWC, iCur, pTerm->u.leftColumn, notReady,
                    WO_EQ|WO_IN|WO_IS, 0);
    if( pAlt==0 ) continue;
    if( pAlt->wtFlags & (TERM_CODED) ) continue;
    testcase( pAlt->eOperator & WO_EQ );
    testcase( pAlt->eOperator & WO_IS );
    testcase( pAlt->eOperator & WO_IN );
    VdbeModuleComment((v, "begin transitive constraint"));
    pEAlt = sqlite3StackAllocRaw(db, sizeof(*pEAlt));
    if( pEAlt ){
      *pEAlt = *pAlt->pExpr;
      pEAlt->pLeft = pE->pLeft;
      sqlite3ExprIfFalse(pParse, pEAlt, addrCont, SQLITE_JUMPIFNULL);

    sqlite3DebugPrintf("TERM-%-3d NULL\n", iTerm);
  }else{
    char zType[4];
    memcpy(zType, "...", 4);
    if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V';
    if( pTerm->eOperator & WO_EQUIV  ) zType[1] = 'E';
    if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L';
    sqlite3DebugPrintf(
    sqlite3DebugPrintf("TERM-%-3d %p %s cursor=%-3d prob=%-3d op=0x%03x\n",
                       iTerm, pTerm, zType, pTerm->leftCursor, pTerm->truthProb,
                       pTerm->eOperator);
       "TERM-%-3d %p %s cursor=%-3d prob=%-3d op=0x%03x wtFlags=0x%04x\n",
       iTerm, pTerm, zType, pTerm->leftCursor, pTerm->truthProb,
       pTerm->eOperator, pTerm->wtFlags);
    sqlite3TreeViewExpr(0, pTerm->pExpr, 0);
  }
}
#endif

#ifdef WHERETRACE_ENABLED
/*

        /* If a truth probability is specified using the likelihood() hints,
        ** then use the probability provided by the application. */
        pLoop->nOut += pTerm->truthProb;
      }else{
        /* In the absence of explicit truth probabilities, use heuristics to
        ** guess a reasonable truth probability. */
        pLoop->nOut--;
        if( pTerm->eOperator&WO_EQ ){
        if( pTerm->eOperator&(WO_EQ|WO_IS) ){
          Expr *pRight = pTerm->pExpr->pRight;
          testcase( pTerm->pExpr->op==TK_IS );
          if( sqlite3ExprIsInteger(pRight, &k) && k>=(-1) && k<=1 ){
            k = 10;
          }else{
            k = 20;
          }
          if( iReduce<k ) iReduce = k;
        }

  pNew = pBuilder->pNew;
  if( db->mallocFailed ) return SQLITE_NOMEM;

  assert( (pNew->wsFlags & WHERE_VIRTUALTABLE)==0 );
  assert( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 );
  if( pNew->wsFlags & WHERE_BTM_LIMIT ){
    opMask = WO_LT|WO_LE;
  }else if( pProbe->tnum<=0 || (pSrc->jointype & JT_LEFT)!=0 ){
  }else if( /*pProbe->tnum<=0 ||*/ (pSrc->jointype & JT_LEFT)!=0 ){
    opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE;
  }else{
    opMask = WO_EQ|WO_IN|WO_ISNULL|WO_GT|WO_GE|WO_LT|WO_LE;
    opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE|WO_ISNULL|WO_IS;
  }
  if( pProbe->bUnordered ) opMask &= ~(WO_GT|WO_GE|WO_LT|WO_LE);

  assert( pNew->u.btree.nEq<pProbe->nColumn );
  iCol = pProbe->aiColumn[pNew->u.btree.nEq];

  pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, iCol,

      }else if( ALWAYS(pExpr->x.pList && pExpr->x.pList->nExpr) ){
        /* "x IN (value, value, ...)" */
        nIn = sqlite3LogEst(pExpr->x.pList->nExpr);
      }
      assert( nIn>0 );  /* RHS always has 2 or more terms...  The parser
                        ** changes "x IN (?)" into "x=?". */

    }else if( eOp & (WO_EQ) ){
    }else if( eOp & (WO_EQ|WO_IS) ){
      pNew->wsFlags |= WHERE_COLUMN_EQ;
      if( iCol<0 || (nInMul==0 && pNew->u.btree.nEq==pProbe->nKeyCol-1) ){
        if( iCol>=0 && pProbe->uniqNotNull==0 ){
          pNew->wsFlags |= WHERE_UNQ_WANTED;
        }else{
          pNew->wsFlags |= WHERE_ONEROW;
        }

    assert( pNew->nOut==saved_nOut );
    if( pNew->wsFlags & WHERE_COLUMN_RANGE ){
      /* Adjust nOut using stat3/stat4 data. Or, if there is no stat3/stat4
      ** data, using some other estimate.  */
      whereRangeScanEst(pParse, pBuilder, pBtm, pTop, pNew);
    }else{
      int nEq = ++pNew->u.btree.nEq;
      assert( eOp & (WO_ISNULL|WO_EQ|WO_IN) );
      assert( eOp & (WO_ISNULL|WO_EQ|WO_IN|WO_IS) );

      assert( pNew->nOut==saved_nOut );
      if( pTerm->truthProb<=0 && iCol>=0 ){
        assert( (eOp & WO_IN) || nIn==0 );
        testcase( eOp & WO_IN );
        pNew->nOut += pTerm->truthProb;
        pNew->nOut -= nIn;
      }else{
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
        tRowcnt nOut = 0;
        if( nInMul==0 
         && pProbe->nSample 
         && pNew->u.btree.nEq<=pProbe->nSampleCol
         && ((eOp & WO_IN)==0 || !ExprHasProperty(pTerm->pExpr, EP_xIsSelect))
        ){
          Expr *pExpr = pTerm->pExpr;
          if( (eOp & (WO_EQ|WO_ISNULL))!=0 ){
          if( (eOp & (WO_EQ|WO_ISNULL|WO_IS))!=0 ){
            testcase( eOp & WO_EQ );
            testcase( eOp & WO_IS );
            testcase( eOp & WO_ISNULL );
            rc = whereEqualScanEst(pParse, pBuilder, pExpr->pRight, &nOut);
          }else{
            rc = whereInScanEst(pParse, pBuilder, pExpr->x.pList, &nOut);
          }
          if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
          if( rc!=SQLITE_OK ) break;          /* Jump out of the pTerm loop */

    */
    for(i=0; i<nOrderBy; i++){
      if( MASKBIT(i) & obSat ) continue;
      pOBExpr = sqlite3ExprSkipCollate(pOrderBy->a[i].pExpr);
      if( pOBExpr->op!=TK_COLUMN ) continue;
      if( pOBExpr->iTable!=iCur ) continue;
      pTerm = findTerm(&pWInfo->sWC, iCur, pOBExpr->iColumn,
                       ~ready, WO_EQ|WO_ISNULL, 0);
                       ~ready, WO_EQ|WO_ISNULL|WO_IS, 0);
      if( pTerm==0 ) continue;
      if( (pTerm->eOperator&WO_EQ)!=0 && pOBExpr->iColumn>=0 ){
      if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 && pOBExpr->iColumn>=0 ){
        const char *z1, *z2;
        pColl = sqlite3ExprCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr);
        if( !pColl ) pColl = db->pDfltColl;
        z1 = pColl->zName;
        pColl = sqlite3ExprCollSeq(pWInfo->pParse, pTerm->pExpr);
        if( !pColl ) pColl = db->pDfltColl;
        z2 = pColl->zName;
        if( sqlite3StrICmp(z1, z2)!=0 ) continue;
        testcase( pTerm->pExpr->op==TK_IS );
      }
      obSat |= MASKBIT(i);
    }

    if( (pLoop->wsFlags & WHERE_ONEROW)==0 ){
      if( pLoop->wsFlags & WHERE_IPK ){
        pIndex = 0;

      distinctColumns = 0;
      for(j=0; j<nColumn; j++){
        u8 bOnce;   /* True to run the ORDER BY search loop */

        /* Skip over == and IS NULL terms */
        if( j<pLoop->u.btree.nEq
         && pLoop->nSkip==0
         && ((i = pLoop->aLTerm[j]->eOperator) & (WO_EQ|WO_ISNULL))!=0
         && ((i = pLoop->aLTerm[j]->eOperator) & (WO_EQ|WO_ISNULL|WO_IS))!=0
        ){
          if( i & WO_ISNULL ){
            testcase( isOrderDistinct );
            isOrderDistinct = 0;
          }
          continue;  
        }

  if( IsVirtual(pTab) ) return 0;
  if( pItem->zIndex ) return 0;
  iCur = pItem->iCursor;
  pWC = &pWInfo->sWC;
  pLoop = pBuilder->pNew;
  pLoop->wsFlags = 0;
  pLoop->nSkip = 0;
  pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ, 0);
  pTerm = findTerm(pWC, iCur, -1, 0, WO_EQ|WO_IS, 0);
  if( pTerm ){
    testcase( pTerm->eOperator & WO_IS );
    pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_IPK|WHERE_ONEROW;
    pLoop->aLTerm[0] = pTerm;
    pLoop->nLTerm = 1;
    pLoop->u.btree.nEq = 1;
    /* TUNING: Cost of a rowid lookup is 10 */
    pLoop->rRun = 33;  /* 33==sqlite3LogEst(10) */
  }else{
    for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
      assert( pLoop->aLTermSpace==pLoop->aLTerm );
      if( !IsUniqueIndex(pIdx)
       || pIdx->pPartIdxWhere!=0 
       || pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace) 
      ) continue;
      for(j=0; j<pIdx->nKeyCol; j++){
        pTerm = findTerm(pWC, iCur, pIdx->aiColumn[j], 0, WO_EQ, pIdx);
        pTerm = findTerm(pWC, iCur, pIdx->aiColumn[j], 0, WO_EQ|WO_IS, pIdx);
        if( pTerm==0 ) break;
         testcase( pTerm->eOperator & WO_IS );
        pLoop->aLTerm[j] = pTerm;
      }
      if( j!=pIdx->nKeyCol ) continue;
      pLoop->wsFlags = WHERE_COLUMN_EQ|WHERE_ONEROW|WHERE_INDEXED;
      if( pIdx->isCovering || (pItem->colUsed & ~columnsInIndex(pIdx))==0 ){
        pLoop->wsFlags |= WHERE_IDX_ONLY;
      }

#  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 */
#define TERM_IS         0x800  /* Term.pExpr is an IS 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 */

/*
** Bitmasks for the operators on WhereTerm objects.  These are all
** operators that are of interest to the query planner.  An
** OR-ed combination of these values can be used when searching for
** particular WhereTerms within a WhereClause.
*/
#define WO_IN     0x001
#define WO_EQ     0x002
#define WO_IN     0x0001
#define WO_EQ     0x0002
#define WO_LT     (WO_EQ<<(TK_LT-TK_EQ))
#define WO_LE     (WO_EQ<<(TK_LE-TK_EQ))
#define WO_GT     (WO_EQ<<(TK_GT-TK_EQ))
#define WO_GE     (WO_EQ<<(TK_GE-TK_EQ))
#define WO_MATCH  0x040
#define WO_ISNULL 0x080
#define WO_OR     0x100       /* Two or more OR-connected terms */
#define WO_AND    0x200       /* Two or more AND-connected terms */
#define WO_EQUIV  0x400       /* Of the form A==B, both columns */
#define WO_NOOP   0x800       /* This term does not restrict search space */
#define WO_MATCH  0x0040
#define WO_IS     0x0080
#define WO_ISNULL 0x0100
#define WO_OR     0x0200       /* Two or more OR-connected terms */
#define WO_AND    0x0400       /* Two or more AND-connected terms */
#define WO_EQUIV  0x0800       /* Of the form A==B, both columns */
#define WO_NOOP   0x1000       /* This term does not restrict search space */

#define WO_ALL    0xfff       /* Mask of all possible WO_* values */
#define WO_SINGLE 0x0ff       /* Mask of all non-compound WO_* values */
#define WO_ALL    0x1fff       /* Mask of all possible WO_* values */
#define WO_SINGLE 0x01ff       /* Mask of all non-compound WO_* values */

/*
** These are definitions of bits in the WhereLoop.wsFlags field.
** The particular combination of bits in each WhereLoop help to
** determine the algorithm that WhereLoop represents.
*/
#define WHERE_COLUMN_EQ    0x00000001  /* x=EXPR */

# 2015-05-11
#
# 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.
#
#***********************************************************************
#
# Quick tests for the sqlite3_analyzer tool
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !vtab {
  finish_test
  return
}

if {$tcl_platform(platform)=="windows"} {
  set PROG "sqlite3_analyzer.exe"
} else {
  set PROG "./sqlite3_analyzer"
}
db close
forcedelete test.db test.db-journal test.db-wal
sqlite3 db test.db

do_test analyzer1-1.0 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
    CREATE TABLE t2(a INT PRIMARY KEY, b) WITHOUT ROWID;
    WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<250)
    INSERT INTO t1(a,b) SELECT x, randomblob(200) FROM c;
    INSERT INTO t2(a,b) SELECT a, b FROM t1;
  }
  set line "exec $PROG test.db"
  unset -nocomplain ::MSG
  catch {eval $line} ::MSG
} {0}
do_test analyzer1-1.1 {
  regexp {^/\*\* Disk-Space Utilization.*COMMIT;\W*$} $::MSG
} {1}

finish_test

  7 "a OR (a AND b)" {
      1 {1 2 1 2 0 1}   2 {1 0 1 0 1 0}   3 {0 1 0 1 1 2}   4 {1 0 1 0 0 1}   
      5 {1 0 1 0 0 1}   6 {1 0 1 0 2 2}   7 {2 1 0 0 0 0}   8 {1 2 1 2 2 1}   
      9 {1 1 1 1 1 3}  10 {1 3 0 0 0 0}
  }

} {
  do_execsql_test 11.1.$tn  {
  do_execsql_test 11.1.$tn.1  {
    SELECT rowid, mit(matchinfo(tt, 'y')) FROM tt WHERE tt MATCH $expr
  } $res
}

  set r2 [list]
  foreach {rowid L} $res {
    lappend r2 $rowid
    set M [list]
    foreach {a b} $L {
      lappend M [expr ($a ? 1 : 0) + ($b ? 2 : 0)]
    }
    lappend r2 $M
  }

  do_execsql_test 11.1.$tn.2  {
    SELECT rowid, mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH $expr
  } $r2
  breakpoint

  do_execsql_test 11.1.$tn.2  {
    SELECT rowid, mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH $expr
  } $r2
}
set sqlite_fts3_enable_parentheses 0

#---------------------------------------------------------------------------
# Test the 'b' matchinfo flag
#
set sqlite_fts3_enable_parentheses 1
reset_db
db func mit mit

do_test 12.0 {
  set cols [list]
  for {set i 0} {$i < 50} {incr i} { lappend cols "c$i" }
  execsql "CREATE VIRTUAL TABLE tt USING fts3([join $cols ,])"
} {}

do_execsql_test 12.1 {
  INSERT INTO tt (rowid, c4, c45) VALUES(1, 'abc', 'abc');
  SELECT mit(matchinfo(tt, 'b')) FROM tt WHERE tt MATCH 'abc';
} [list [list [expr 1<<4] [expr 1<<(45-32)]]]

set sqlite_fts3_enable_parentheses 0
finish_test

} {
  1 "SELECT matchinfo(content) FROM t2 WHERE t2 MATCH 'history'" matchinfo
  2 "SELECT offsets(content) FROM t2 WHERE t2 MATCH 'history'"   offsets
  3 "SELECT snippet(content) FROM t2 WHERE t2 MATCH 'history'"   snippet
  4 "SELECT optimize(content) FROM t2 WHERE t2 MATCH 'history'"  optimize
}
do_catchsql_test 5.5.1 {
  SELECT matchinfo(t2, 'abc') FROM t2 WHERE t2 MATCH 'history'
} {1 {unrecognized matchinfo request: b}}
  SELECT matchinfo(t2, 'abcd') FROM t2 WHERE t2 MATCH 'history'
} {1 {unrecognized matchinfo request: d}}

do_execsql_test 5.5 { DROP TABLE t2 }


# Test the snippet() function with 1 to 6 arguments.
# 
do_execsql_test 6.1 {

do_execsql_test jrnlmode-8.29 { COMMIT }                        {}
do_execsql_test jrnlmode-8.30 { PRAGMA journal_mode=DELETE }    {delete}

# Assertion fault on 2015-05-01
do_test jrnlmode-9.1 {
  forcedelete test2.db
  sqlite3 db2 test2.db
  breakpoint
  db2 eval {CREATE TEMP TABLE t(l); PRAGMA journal_mode=off;}
  db2 close
} {}
do_execsql_test jrnlmode-9.2 {
  PRAGMA locking_mode = exclusive;
  CREATE TABLE tx(a);
  PRAGMA journal_mode = off;

# 2015-05-11
#
# 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.
#
#***********************************************************************
#
# Quick tests for the sqldiff tool
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl

if {$tcl_platform(platform)=="windows"} {
  set PROG "sqldiff.exe"
} else {
  set PROG "./sqldiff"
}
db close
forcedelete test.db test2.db
sqlite3 db test.db

do_test sqldiff-1.0 {
  db eval {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
    CREATE TABLE t2(a INT PRIMARY KEY, b) WITHOUT ROWID;
    WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<100)
    INSERT INTO t1(a,b) SELECT x, printf('abc-%d-xyz',x) FROM c;
    INSERT INTO t2(a,b) SELECT a, b FROM t1;
  }
  db backup test2.db
  db eval {
    ATTACH 'test2.db' AS x2;
    DELETE FROM x2.t1 WHERE a=49;
    DELETE FROM x2.t2 WHERE a=48;
    INSERT INTO x2.t1(a,b) VALUES(1234,'hello');
    INSERT INTO x2.t2(a,b) VALUES(50.5,'xyzzy');
    CREATE TABLE x2.t3(a,b,c);
    INSERT INTO x2.t3 VALUES(111,222,333);
    CREATE TABLE main.t4(x,y,z);
    INSERT INTO t4 SELECT * FROM t3;
  }
  set line "exec $PROG test.db test2.db"
  unset -nocomplain ::MSG
  catch {eval $line} ::MSG
} {0}
do_test sqldiff-1.1 {
  set ::MSG
} {DELETE FROM t1 WHERE a=49;
INSERT INTO t1(a,b) VALUES(1234,'hello');
DELETE FROM t2 WHERE a=48;
INSERT INTO t2(a,b) VALUES(50.5,'xyzzy');
CREATE TABLE t3(a,b,c);
INSERT INTO t3(rowid,a,b,c) VALUES(1,111,222,333);
DROP TABLE t4;}

finish_test

db close
forcedelete test.db
sqlite3 db test.db
register_dbstat_vtab db
do_execsql_test stat-5.1 {
  PRAGMA auto_vacuum = OFF;
  CREATE TABLE tx(y);
  ATTACH ':memory:' AS aux1;
  CREATE VIRTUAL TABLE temp.stat USING dbstat;
  CREATE TABLE t1(x);
  CREATE VIRTUAL TABLE temp.stat USING dbstat(aux1);
  CREATE TABLE aux1.t1(x);
  INSERT INTO t1 VALUES(zeroblob(1513));
  INSERT INTO t1 VALUES(zeroblob(1514));
  SELECT name, path, pageno, pagetype, ncell, payload, unused, mx_payload
    FROM stat WHERE name = 't1';
} [list \
  t1 / 2 leaf 2 993 5 1517                \
  t1 /000+000000 3 overflow 0 1020 0 0    \
  t1 /001+000000 4 overflow 0 1020 0 0    \
]

do_catchsql_test stat-6.1 {
  CREATE VIRTUAL TABLE temp.s2 USING dbstat(mainx);
} {1 {no such database: mainx}}

finish_test

   ORDER BY +w;
} {1 2 1 3 3 4 3 6 5 6 5 7}
do_execsql_test transitive1-301 {
  SELECT *
    FROM t301 CROSS JOIN t302
   WHERE w=y AND y IS NOT NULL
   ORDER BY w;
} {1 2 1 3 3 4 3 6 5 6 5 7}
do_execsql_test transitive1-302 {
  SELECT *
    FROM t301 CROSS JOIN t302
   WHERE w IS y AND y IS NOT NULL
   ORDER BY w;
} {1 2 1 3 3 4 3 6 5 6 5 7}
do_execsql_test transitive1-310 {
  SELECT *
    FROM t301 CROSS JOIN t302 ON w=y
   WHERE y>1
   ORDER BY +w
} {3 4 3 6 5 6 5 7}

  SELECT *
    FROM t301 CROSS JOIN t302 ON w=y
   WHERE y BETWEEN 1 AND 4
   ORDER BY w DESC;
} {3 4 3 6 1 2 1 3}

# Ticket [c620261b5b5dc] circa 2013-10-28.
# Make sureconstraints are not used with LEFT JOINs.
# Make sure constraints are not used with LEFT JOINs.
#
# The next case is from the ticket report.  It outputs no rows in 3.8.1
# prior to the bug-fix.
#
do_execsql_test transitive1-400 {
  CREATE TABLE t401(a);
  CREATE TABLE t402(b);
  CREATE TABLE t403(c INTEGER PRIMARY KEY);
  INSERT INTO t401 VALUES(1);
  INSERT INTO t403 VALUES(1);
  SELECT '1-row' FROM t401 LEFT JOIN t402 ON b=a JOIN t403 ON c=a;
} {1-row}
do_execsql_test transitive1-401 {
  SELECT '1-row' FROM t401 LEFT JOIN t402 ON b IS a JOIN t403 ON c=a;
} {1-row}
do_execsql_test transitive1-402 {
  SELECT '1-row' FROM t401 LEFT JOIN t402 ON b=a JOIN t403 ON c IS a;
} {1-row}
do_execsql_test transitive1-403 {
  SELECT '1-row' FROM t401 LEFT JOIN t402 ON b IS a JOIN t403 ON c IS a;
} {1-row}


# The following is a script distilled from the XBMC project where the
# bug was originally encountered.  The correct answer is a single row
# of output.  Before the bug was fixed, zero rows were generated.
#
do_execsql_test transitive1-410 {
  CREATE TABLE bookmark ( idBookmark integer primary key, idFile integer, timeInSeconds double, totalTimeInSeconds double, thumbNailImage text, player text, playerState text, type integer);

} {{} 15 16}
do_test vtab1.13-3 {
  execsql { 
    INSERT INTO c VALUES(15, NULL, 16);
    SELECT * FROM echo_c WHERE b IS NULL 
  }
} {15 {} 16}
do_test vtab1.13-3 {
do_test vtab1.13-4 {
  unset -nocomplain null
  execsql { 
    SELECT * FROM echo_c WHERE b IS $null
  }
} {15 {} 16}
do_test vtab1.13-5 {
  execsql { 
    SELECT * FROM echo_c WHERE b IS NULL AND a = 15;
  }
} {15 {} 16}
do_test vtab1.13-6 {
  execsql { 
    SELECT * FROM echo_c WHERE NULL IS b AND a IS 15;
  }
} {15 {} 16}


do_test vtab1-14.001 {
  execsql {SELECT rowid, * FROM echo_c WHERE +rowid IN (1,2,3)}
} {1 3 G H 2 {} 15 16 3 15 {} 16}
do_test vtab1-14.002 {

do_test vtab2-3.2 {
  execsql {
    SELECT *, b.rowid
      FROM schema a LEFT JOIN schema b ON a.dflt_value=b.dflt_value
     WHERE a.rowid=1
  }
} {main schema 0 database {} 0 {} 0 {} {} {} {} {} {} {} {} {}}
do_test vtab2-3.3 {
  execsql {
    SELECT *, b.rowid
      FROM schema a LEFT JOIN schema b ON a.dflt_value IS b.dflt_value
                                      AND a.dflt_value IS NOT NULL
     WHERE a.rowid=1
  }
} {main schema 0 database {} 0 {} 0 {} {} {} {} {} {} {} {} {}}

do_test vtab2-4.1 {
  execsql {
    BEGIN TRANSACTION;
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, UNIQUE(b, c));
    CREATE TABLE fkey(
      to_tbl,

    sqlite3_exec_hex db { CREATE VIRTUAL TABLE %C9 USING s }
  } {/1 {malformed database schema.* already exists}/}
}



finish_test

    SELECT * FROM t1 NATURAL RIGHT OUTER JOIN t2;
  }
} {1 {RIGHT and FULL OUTER JOINs are not currently supported}}
do_test vtab6-2.4 {
  execsql {
    SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d
  }
} {1 2 3 {} {} {} 2 3 4 {} {} {} 3 4 5 1 2 3}
do_test vtab6-2.4.1 {
  execsql {
    SELECT * FROM t1 LEFT JOIN t2 ON t1.a IS t2.d
  }
} {1 2 3 {} {} {} 2 3 4 {} {} {} 3 4 5 1 2 3}
do_test vtab6-2.5 {
  execsql {
    SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t1.a>1
  }
} {2 3 4 {} {} {} 3 4 5 1 2 3}
do_test vtab6-2.6 {

# "sqlite_search_count" which tallys the number of executions of MoveTo
# and Next operators in the VDBE.  By verifing that the search count is
# small we can be assured that indices are being used properly.
#
do_test where-1.1.1 {
  count {SELECT x, y, w FROM t1 WHERE w=10}
} {3 121 10 3}
do_test where-1.1.1b {
  count {SELECT x, y, w FROM t1 WHERE w IS 10}
} {3 121 10 3}
do_eqp_test where-1.1.2 {
  SELECT x, y, w FROM t1 WHERE w=10
} {*SEARCH TABLE t1 USING INDEX i1w (w=?)*}
do_eqp_test where-1.1.2b {
  SELECT x, y, w FROM t1 WHERE w IS 10
} {*SEARCH TABLE t1 USING INDEX i1w (w=?)*}
do_test where-1.1.3 {
  db status step
} {0}
do_test where-1.1.4 {
  db eval {SELECT x, y, w FROM t1 WHERE +w=10}
} {3 121 10}
do_test where-1.1.5 {

} {3 144 11 3}
do_test where-1.3.1 {
  count {SELECT x, y, w AS abc FROM t1 WHERE 11=w}
} {3 144 11 3}
do_test where-1.3.2 {
  count {SELECT x, y, w AS abc FROM t1 WHERE 11=abc}
} {3 144 11 3}
do_test where-1.3.3 {
  count {SELECT x, y, w AS abc FROM t1 WHERE 11 IS abc}
} {3 144 11 3}
do_test where-1.4.1 {
  count {SELECT w, x, y FROM t1 WHERE 11=w AND x>2}
} {11 3 144 3}
do_test where-1.4.1b {
  count {SELECT w, x, y FROM t1 WHERE 11 IS w AND x>2}
} {11 3 144 3}
do_eqp_test where-1.4.2 {
  SELECT w, x, y FROM t1 WHERE 11=w AND x>2
} {*SEARCH TABLE t1 USING INDEX i1w (w=?)*}
do_eqp_test where-1.4.2b {
  SELECT w, x, y FROM t1 WHERE 11 IS w AND x>2
} {*SEARCH TABLE t1 USING INDEX i1w (w=?)*}
do_test where-1.4.3 {
  count {SELECT w AS a, x AS b, y FROM t1 WHERE 11=a AND b>2}
} {11 3 144 3}
do_eqp_test where-1.4.4 {
  SELECT w AS a, x AS b, y FROM t1 WHERE 11=a AND b>2
} {*SEARCH TABLE t1 USING INDEX i1w (w=?)*}
do_test where-1.5 {

} {3 144 3}
do_test where-1.10 {
  count {SELECT x, y FROM t1 WHERE x=3 AND w>=10 AND y=121}
} {3 121 3}
do_test where-1.11 {
  count {SELECT x, y FROM t1 WHERE x=3 AND y=100 AND w<10}
} {3 100 3}
do_test where-1.11b {
  count {SELECT x, y FROM t1 WHERE x IS 3 AND y IS 100 AND w<10}
} {3 100 3}

# New for SQLite version 2.1: Verify that that inequality constraints
# are used correctly.
#
do_test where-1.12 {
  count {SELECT w FROM t1 WHERE x=3 AND y<100}
} {8 3}
do_test where-1.12b {
  count {SELECT w FROM t1 WHERE x IS 3 AND y<100}
} {8 3}
do_test where-1.13 {
  count {SELECT w FROM t1 WHERE x=3 AND 100>y}
} {8 3}
do_test where-1.14 {
  count {SELECT w FROM t1 WHERE 3=x AND y<100}
} {8 3}
do_test where-1.14b {
  count {SELECT w FROM t1 WHERE 3 IS x AND y<100}
} {8 3}
do_test where-1.15 {
  count {SELECT w FROM t1 WHERE 3=x AND 100>y}
} {8 3}
do_test where-1.16 {
  count {SELECT w FROM t1 WHERE x=3 AND y<=100}
} {8 9 5}
do_test where-1.17 {
  count {SELECT w FROM t1 WHERE x=3 AND 100>=y}
} {8 9 5}
do_test where-1.18 {
  count {SELECT w FROM t1 WHERE x=3 AND y>225}
} {15 3}
do_test where-1.18b {
  count {SELECT w FROM t1 WHERE x IS 3 AND y>225}
} {15 3}
do_test where-1.19 {
  count {SELECT w FROM t1 WHERE x=3 AND 225<y}
} {15 3}
do_test where-1.20 {
  count {SELECT w FROM t1 WHERE x=3 AND y>=225}
} {14 15 5}
do_test where-1.21 {
  count {SELECT w FROM t1 WHERE x=3 AND 225<=y}
} {14 15 5}
do_test where-1.22 {
  count {SELECT w FROM t1 WHERE x=3 AND y>121 AND y<196}
} {11 12 5}
do_test where-1.22b {
  count {SELECT w FROM t1 WHERE x IS 3 AND y>121 AND y<196}
} {11 12 5}
do_test where-1.23 {
  count {SELECT w FROM t1 WHERE x=3 AND y>=121 AND y<=196}
} {10 11 12 13 9}
do_test where-1.24 {
  count {SELECT w FROM t1 WHERE x=3 AND 121<y AND 196>y}
} {11 12 5}
do_test where-1.25 {

# "sqlite_search_count" which tallys the number of executions of MoveTo
# and Next operators in the VDBE.  By verifing that the search count is
# small we can be assured that indices are being used properly.
#
do_test where4-1.1 {
  count {SELECT rowid FROM t1 WHERE w IS NULL}
} {7 2}
do_test where4-1.1b {
  unset -nocomplain null
  count {SELECT rowid FROM t1 WHERE w IS $null}
} {7 2}
do_test where4-1.2 {
  count {SELECT rowid FROM t1 WHERE +w IS NULL}
} {7 6}
do_test where4-1.3 {
  count {SELECT rowid FROM t1 WHERE w=1 AND x IS NULL}
} {2 2}
do_test where4-1.4 {

    SELECT * FROM t2 LEFT JOIN t3 ON a=x WHERE +y IS NULL;
  }
} {2 2 {} 3 {} {}}
do_test where4-3.2 {
  execsql {
    SELECT * FROM t2 LEFT JOIN t3 ON a=x WHERE y IS NULL;
  }
} {2 2 {} 3 {} {}}
do_test where4-3.3 {
  execsql {
    SELECT * FROM t2 LEFT JOIN t3 ON a=x WHERE NULL is y;
  }
} {2 2 {} 3 {} {}}
do_test where4-3.4 {
  unset -nocomplain null
  execsql {
    SELECT * FROM t2 LEFT JOIN t3 ON a=x WHERE y IS $null;
  }
} {2 2 {} 3 {} {}}

# Ticket #2189.  Probably the same bug as #2177.
#
do_test where4-4.1 {
  execsql {
    CREATE TABLE test(col1 TEXT PRIMARY KEY);

  8   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i BETWEEN 10 AND 12" {10 11 12}
  9   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i BETWEEN 11 AND 12" {11 12}
 10   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i BETWEEN 10 AND 11" {10 11}
 11   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i BETWEEN 12 AND 10" {}
 12   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i<NULL"      {}
 13   "SELECT i FROM t1 WHERE a=2 AND b=2 AND i>=NULL"     {}
 14   "SELECT i FROM t1 WHERE a=1 AND b='2' AND i<4.5"     {3 4}
 15   "SELECT i FROM t1 WHERE rowid IS '12'"               {12}
} {
  do_execsql_test 1.$tn.1 $sql $res
  do_execsql_test 1.$tn.2 "$sql ORDER BY i ASC"  [lsort -integer -inc  $res]
  do_execsql_test 1.$tn.3 "$sql ORDER BY i DESC" [lsort -integer -dec  $res]
}

# Open the database
#
if {[catch {sqlite3 db $file_to_analyze -uri 1} msg]} {
  puts stderr "error trying to open $file_to_analyze: $msg"
  exit 1
}
register_dbstat_vtab db

db eval {SELECT count(*) FROM sqlite_master}
set pageSize [expr {wide([db one {PRAGMA page_size}])}]

if {$flags(-pageinfo)} {
  db eval {CREATE VIRTUAL TABLE temp.stat USING dbstat}
  db eval {SELECT name, path, pageno FROM temp.stat ORDER BY pageno} {

  char *zTab = 0;
  FILE *out = stdout;
  void (*xDiff)(const char*,FILE*) = diff_one_table;
  int nExt = 0;
  char **azExt = 0;

  g.zArgv0 = argv[0];
  sqlite3_config(SQLITE_CONFIG_SINGLETHREAD);
  for(i=1; i<argc; i++){
    const char *z = argv[i];
    if( z[0]=='-' ){
      z++;
      if( z[0]=='-' ) z++;
      if( strcmp(z,"changeset")==0 ){
        if( i==argc-1 ) cmdlineError("missing argument to %s", argv[i]);
        out = fopen(argv[++i], "wb");
        if( out==0 ) cmdlineError("cannot open: %s", argv[i]);
        xDiff = changeset_one_table;
      }else
      if( strcmp(z,"debug")==0 ){
        if( i==argc-1 ) cmdlineError("missing argument to %s", argv[i]);
        g.fDebug = strtol(argv[++i], 0, 0);
      }else
      if( strcmp(z,"help")==0 ){
        showHelp();
        return 0;
      }else
#ifndef SQLITE_OMIT_LOAD_EXTENSION
      if( strcmp(z,"lib")==0 || strcmp(z,"L")==0 ){
        if( i==argc-1 ) cmdlineError("missing argument to %s", argv[i]);
        azExt = realloc(azExt, sizeof(azExt[0])*(nExt+1));
        if( azExt==0 ) cmdlineError("out of memory");
        azExt[nExt++] = argv[++i];
      }else
#endif
      if( strcmp(z,"primarykey")==0 ){
        g.bSchemaPK = 1;
      }else
      if( strcmp(z,"schema")==0 ){
        g.bSchemaOnly = 1;
      }else
      if( strcmp(z,"summary")==0 ){

  if( rc ){
    cmdlineError("cannot open database file \"%s\"", zDb1);
  }
  rc = sqlite3_exec(g.db, "SELECT * FROM sqlite_master", 0, 0, &zErrMsg);
  if( rc || zErrMsg ){
    cmdlineError("\"%s\" does not appear to be a valid SQLite database", zDb1);
  }
#ifndef SQLITE_OMIT_LOAD_EXTENSION
  sqlite3_enable_load_extension(g.db, 1);
  for(i=0; i<nExt; i++){
    rc = sqlite3_load_extension(g.db, azExt[i], 0, &zErrMsg);
    if( rc || zErrMsg ){
      cmdlineError("error loading %s: %s", azExt[i], zErrMsg);
    }
  }
#endif
  free(azExt);
  zSql = sqlite3_mprintf("ATTACH %Q as aux;", zDb2);
  rc = sqlite3_exec(g.db, zSql, 0, 0, &zErrMsg);
  if( rc || zErrMsg ){
    cmdlineError("cannot attach database \"%s\"", zDb2);
  }
  rc = sqlite3_exec(g.db, "SELECT * FROM aux.sqlite_master", 0, 0, &zErrMsg);