** Boston, MA  02111-1307, USA.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** $Id: btree.c,v 1.24 2001/09/13 21:53:09 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
**
**     Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3:
**     "Sorting And Searching", pages 473-480. Addison-Wesley
**     Publishing Company, Reading, Massachusetts.
................................................................................
  MemPage aOld[3];             /* Temporary copies of pPage and its siblings */

  /* 
  ** Return without doing any work if pPage is neither overfull nor
  ** underfull.
  */
  assert( sqlitepager_iswriteable(pPage) );
  if( !pPage->isOverfull && pPage->nFree<SQLITE_PAGE_SIZE/3 ){
    relinkCellList(pPage);
    return SQLITE_OK;
  }

  /*
  ** Find the parent of the page to be balanceed.
  ** If there is no parent, it means this page is the root page and
................................................................................
  apNew[nNew-1]->u.hdr.rightChild = apOld[nOld-1]->u.hdr.rightChild;
  if( nxDiv==pParent->nCell ){
    pParent->u.hdr.rightChild = pgnoNew[nNew-1];
  }else{
    pParent->apCell[nxDiv]->h.leftChild = pgnoNew[nNew-1];
  }
  if( pCur ){




    assert( pOldCurPage!=0 );
    sqlitepager_ref(pCur->pPage);
    sqlitepager_unref(pOldCurPage);

  }

  /*
  ** Reparent children of all cells.
  */
  for(i=0; i<nNew; i++){
    reparentChildPages(pBt->pPager, apNew[i]);
................................................................................
    assert( pPage->u.hdr.rightChild==0 );  /* Must be a leaf page */
    pCur->idx++;
  }else{
    assert( pPage->u.hdr.rightChild==0 );  /* Must be a leaf page */
  }
  insertCell(pPage, pCur->idx, &newCell, szNew);
  rc = balance(pCur->pBt, pPage, pCur);


  return rc;
}

/*
** Delete the entry that the cursor is pointing to.
**
** The cursor is left pointing at either the next or the previous

** Boston, MA  02111-1307, USA.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** $Id: btree.c,v 1.25 2001/09/14 03:24:24 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
**
**     Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3:
**     "Sorting And Searching", pages 473-480. Addison-Wesley
**     Publishing Company, Reading, Massachusetts.
................................................................................
  MemPage aOld[3];             /* Temporary copies of pPage and its siblings */

  /* 
  ** Return without doing any work if pPage is neither overfull nor
  ** underfull.
  */
  assert( sqlitepager_iswriteable(pPage) );
  if( !pPage->isOverfull && pPage->nFree<SQLITE_PAGE_SIZE/2 && pPage->nCell>=2){
    relinkCellList(pPage);
    return SQLITE_OK;
  }

  /*
  ** Find the parent of the page to be balanceed.
  ** If there is no parent, it means this page is the root page and
................................................................................
  apNew[nNew-1]->u.hdr.rightChild = apOld[nOld-1]->u.hdr.rightChild;
  if( nxDiv==pParent->nCell ){
    pParent->u.hdr.rightChild = pgnoNew[nNew-1];
  }else{
    pParent->apCell[nxDiv]->h.leftChild = pgnoNew[nNew-1];
  }
  if( pCur ){
    if( j<=iCur && pCur->pPage==pParent && pCur->idx>idxDiv[nOld-1] ){
      assert( pCur->pPage==pOldCurPage );
      pCur->idx += nNew - nOld;
    }else{
      assert( pOldCurPage!=0 );
      sqlitepager_ref(pCur->pPage);
      sqlitepager_unref(pOldCurPage);
    }
  }

  /*
  ** Reparent children of all cells.
  */
  for(i=0; i<nNew; i++){
    reparentChildPages(pBt->pPager, apNew[i]);
................................................................................
    assert( pPage->u.hdr.rightChild==0 );  /* Must be a leaf page */
    pCur->idx++;
  }else{
    assert( pPage->u.hdr.rightChild==0 );  /* Must be a leaf page */
  }
  insertCell(pPage, pCur->idx, &newCell, szNew);
  rc = balance(pCur->pBt, pPage, pCur);
  /* sqliteBtreePageDump(pCur->pBt, pCur->pgnoRoot, 1); */
  /* fflush(stdout); */
  return rc;
}

/*
** Delete the entry that the cursor is pointing to.
**
** The cursor is left pointing at either the next or the previous

**     DROP TABLE
**     CREATE INDEX
**     DROP INDEX
**     creating expressions and ID lists
**     COPY
**     VACUUM
**
** $Id: build.c,v 1.32 2001/09/13 21:53:10 drh Exp $
*/
#include "sqliteInt.h"

/*
** This routine is called after a single SQL statement has been
** parsed and we want to execute the VDBE code to implement 
** that statement.  Prior action routines should have already
................................................................................
** Note that if an error occurred, it might be the case that
** no VDBE code was generated.
*/
void sqliteExec(Parse *pParse){
  int rc = SQLITE_OK;
  sqlite *db = pParse->db;
  if( sqlite_malloc_failed ) return;
  if( pParse->pVdbe ){
    if( pParse->explain ){
      rc = sqliteVdbeList(pParse->pVdbe, pParse->xCallback, pParse->pArg, 
                          &pParse->zErrMsg);
    }else{
      FILE *trace = (db->flags & SQLITE_VdbeTrace)!=0 ? stderr : 0;
      sqliteVdbeTrace(pParse->pVdbe, trace);
      rc = sqliteVdbeExec(pParse->pVdbe, pParse->xCallback, pParse->pArg, 
                          &pParse->zErrMsg, db->pBusyArg,
                          db->xBusyCallback);
    }
    sqliteVdbeDelete(pParse->pVdbe);
    pParse->pVdbe = 0;
................................................................................
    };
    int base;

    if( (db->flags & SQLITE_InTrans)==0 ){
      sqliteVdbeAddOp(v, OP_Transaction, 0, 0, 0, 0);
    }
    base = sqliteVdbeAddOpList(v, ArraySize(dropIndex), dropIndex);

    sqliteVdbeChangeP1(v, base+8, pIndex->tnum);
    if( (db->flags & SQLITE_InTrans)==0 ){
      sqliteVdbeAddOp(v, OP_Commit, 0, 0, 0, 0);
    }
  }

  /* Mark the internal Index structure for deletion by the

**     DROP TABLE
**     CREATE INDEX
**     DROP INDEX
**     creating expressions and ID lists
**     COPY
**     VACUUM
**
** $Id: build.c,v 1.33 2001/09/14 03:24:24 drh Exp $
*/
#include "sqliteInt.h"

/*
** This routine is called after a single SQL statement has been
** parsed and we want to execute the VDBE code to implement 
** that statement.  Prior action routines should have already
................................................................................
** Note that if an error occurred, it might be the case that
** no VDBE code was generated.
*/
void sqliteExec(Parse *pParse){
  int rc = SQLITE_OK;
  sqlite *db = pParse->db;
  if( sqlite_malloc_failed ) return;
  if( pParse->pVdbe && pParse->nErr==0 ){
    if( pParse->explain ){
      rc = sqliteVdbeList(pParse->pVdbe, pParse->xCallback, pParse->pArg, 
                          &pParse->zErrMsg);
    }else{
      FILE *trace = (db->flags & SQLITE_VdbeTrace)!=0 ? stdout : 0;
      sqliteVdbeTrace(pParse->pVdbe, trace);
      rc = sqliteVdbeExec(pParse->pVdbe, pParse->xCallback, pParse->pArg, 
                          &pParse->zErrMsg, db->pBusyArg,
                          db->xBusyCallback);
    }
    sqliteVdbeDelete(pParse->pVdbe);
    pParse->pVdbe = 0;
................................................................................
    };
    int base;

    if( (db->flags & SQLITE_InTrans)==0 ){
      sqliteVdbeAddOp(v, OP_Transaction, 0, 0, 0, 0);
    }
    base = sqliteVdbeAddOpList(v, ArraySize(dropIndex), dropIndex);
    sqliteVdbeChangeP3(v, base+2, pIndex->zName, 0);
    sqliteVdbeChangeP1(v, base+8, pIndex->tnum);
    if( (db->flags & SQLITE_InTrans)==0 ){
      sqliteVdbeAddOp(v, OP_Commit, 0, 0, 0, 0);
    }
  }

  /* Mark the internal Index structure for deletion by the

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions.
**
** $Id: expr.c,v 1.26 2001/09/13 14:46:10 drh Exp $
*/
#include "sqliteInt.h"

/*
** Walk an expression tree.  Return 1 if the expression is constant
** and 0 if it involves variables.
*/
................................................................................
  switch( pExpr->op ){
    case TK_COLUMN: {
      if( pParse->useAgg ){
        sqliteVdbeAddOp(v, OP_AggGet, 0, pExpr->iAgg, 0, 0);
      }else if( pExpr->iColumn>=0 ){
        sqliteVdbeAddOp(v, OP_Column, pExpr->iTable, pExpr->iColumn, 0, 0);
      }else{
        sqliteVdbeAddOp(v, OP_FullKey, pExpr->iTable, 0, 0, 0);
      }
      break;
    }
    case TK_INTEGER: {
      int i = atoi(pExpr->token.z);
      sqliteVdbeAddOp(v, OP_Integer, i, 0, 0, 0);
      break;

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions.
**
** $Id: expr.c,v 1.27 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"

/*
** Walk an expression tree.  Return 1 if the expression is constant
** and 0 if it involves variables.
*/
................................................................................
  switch( pExpr->op ){
    case TK_COLUMN: {
      if( pParse->useAgg ){
        sqliteVdbeAddOp(v, OP_AggGet, 0, pExpr->iAgg, 0, 0);
      }else if( pExpr->iColumn>=0 ){
        sqliteVdbeAddOp(v, OP_Column, pExpr->iTable, pExpr->iColumn, 0, 0);
      }else{
        sqliteVdbeAddOp(v, OP_Recno, pExpr->iTable, 0, 0, 0);
      }
      break;
    }
    case TK_INTEGER: {
      int i = atoi(pExpr->token.z);
      sqliteVdbeAddOp(v, OP_Integer, i, 0, 0, 0);
      break;

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle INSERT statements.
**
** $Id: insert.c,v 1.15 2001/09/13 14:46:10 drh Exp $
*/
#include "sqliteInt.h"

/*
** This routine is call to handle SQL of the following forms:
**
**    insert into TABLE (IDLIST) values(EXPRLIST)
................................................................................
    sqliteVdbeAddOp(v, OP_Rewind, srcTab, 0, 0, 0);
    iBreak = sqliteVdbeMakeLabel(v);
    iCont = sqliteVdbeAddOp(v, OP_Next, srcTab, iBreak, 0, 0);
  }

  /* Create a new entry in the table and fill it with data.
  */
  sqliteVdbeAddOp(v, OP_NewRecno, 0, 0, 0, 0);
  if( pTab->pIndex ){
    sqliteVdbeAddOp(v, OP_Dup, 0, 0, 0, 0);
  }
  for(i=0; i<pTab->nCol; i++){
    if( pColumn==0 ){
      j = i;
    }else{

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle INSERT statements.
**
** $Id: insert.c,v 1.16 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"

/*
** This routine is call to handle SQL of the following forms:
**
**    insert into TABLE (IDLIST) values(EXPRLIST)
................................................................................
    sqliteVdbeAddOp(v, OP_Rewind, srcTab, 0, 0, 0);
    iBreak = sqliteVdbeMakeLabel(v);
    iCont = sqliteVdbeAddOp(v, OP_Next, srcTab, iBreak, 0, 0);
  }

  /* Create a new entry in the table and fill it with data.
  */
  sqliteVdbeAddOp(v, OP_NewRecno, base, 0, 0, 0);
  if( pTab->pIndex ){
    sqliteVdbeAddOp(v, OP_Dup, 0, 0, 0, 0);
  }
  for(i=0; i<pTab->nCol; i++){
    if( pColumn==0 ){
      j = i;
    }else{

*************************************************************************
** This is the implementation of the page cache subsystem.
** 
** The page cache is used to access a database file.  The pager journals
** all writes in order to support rollback.  Locking is used to limit
** access to one or more reader or to one writer.
**
** @(#) $Id: pager.c,v 1.15 2001/09/13 14:46:10 drh Exp $
*/
#include "sqliteInt.h"
#include "pager.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <assert.h>
................................................................................
     "/tmp",
     "/temp",
     "./temp",
  };
  int i;
  struct stat buf;
  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
    if( stat(azDirs[i], &buf)==0 && S_ISDIR(buf.st_mode)

         && access(azDirs[i], W_OK) ){
       return azDirs[i];
    }
  }
  return 0;
}

/*
** Create a new page cache and put a pointer to the page cache in *ppPager.
** The file to be cached need not exist.  The file is not locked until

*************************************************************************
** This is the implementation of the page cache subsystem.
** 
** The page cache is used to access a database file.  The pager journals
** all writes in order to support rollback.  Locking is used to limit
** access to one or more reader or to one writer.
**
** @(#) $Id: pager.c,v 1.16 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"
#include "pager.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <assert.h>
................................................................................
     "/tmp",
     "/temp",
     "./temp",
  };
  int i;
  struct stat buf;
  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
    if( stat(azDirs[i], &buf) ) continue;
    if( !S_ISDIR(buf.st_mode) ) continue;
    if( access(azDirs[i], 07) ) continue;
    return azDirs[i];

  }
  return 0;
}

/*
** Create a new page cache and put a pointer to the page cache in *ppPager.
** The file to be cached need not exist.  The file is not locked until

*************************************************************************
** This file contains code to implement a pseudo-random number
** generator (PRNG) for SQLite.
**
** Random numbers are used by some of the database backends in order
** to generate random integer keys for tables or random filenames.
**
** $Id: random.c,v 1.3 2001/09/13 21:53:10 drh Exp $
*/
#include "sqliteInt.h"
#include <time.h>

/*
** Get a single 8-bit random value from the RC4 PRNG.
*/
................................................................................
  r = sqliteRandomByte();
  for(i=1; i<4; i++){
    r = (r<<8) + sqliteRandomByte();
  }
  return r;
}












/*
** Generate a random filename with the given prefix.  The new filename
** is written into zBuf[].  The calling function must insure that
** zBuf[] is big enough to hold the prefix plus 20 or so extra
** characters.
**

*************************************************************************
** This file contains code to implement a pseudo-random number
** generator (PRNG) for SQLite.
**
** Random numbers are used by some of the database backends in order
** to generate random integer keys for tables or random filenames.
**
** $Id: random.c,v 1.4 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"
#include <time.h>

/*
** Get a single 8-bit random value from the RC4 PRNG.
*/
................................................................................
  r = sqliteRandomByte();
  for(i=1; i<4; i++){
    r = (r<<8) + sqliteRandomByte();
  }
  return r;
}

/*
** Return a random 16-bit unsigned integer.  The integer is generated by
** making 2 calls to sqliteRandomByte().
*/
int sqliteRandomShort(void){
  int r;
  r = sqliteRandomByte();
  r = (r<<8) + sqliteRandomByte();
  return r;
}

/*
** Generate a random filename with the given prefix.  The new filename
** is written into zBuf[].  The calling function must insure that
** zBuf[] is big enough to hold the prefix plus 20 or so extra
** characters.
**

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements.
**
** $Id: select.c,v 1.35 2001/09/13 21:53:10 drh Exp $
*/
#include "sqliteInt.h"

/*
** Allocate a new Select structure and return a pointer to that
** structure.
*/
................................................................................
  }else 

  /* Construct a record from the query result, but instead of
  ** saving that record, use it as a key to delete elements from
  ** the temporary table iParm.
  */
  if( eDest==SRT_Except ){
    sqliteVdbeAddOp(v, OP_MakeRecord, nColumn, 0, 0, 0);
    sqliteVdbeAddOp(v, OP_MoveTo, iParm, 0, 0, 0);
    sqliteVdbeAddOp(v, OP_Delete, iParm, 0, 0, 0);
  }else 

  /* If we are creating a set for an "expr IN (SELECT ...)" construct,
  ** then there should be a single item on the stack.  Write this
  ** item into the set table with bogus data.
  */

**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains C code routines that are called by the parser
** to handle SELECT statements.
**
** $Id: select.c,v 1.36 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"

/*
** Allocate a new Select structure and return a pointer to that
** structure.
*/
................................................................................
  }else 

  /* Construct a record from the query result, but instead of
  ** saving that record, use it as a key to delete elements from
  ** the temporary table iParm.
  */
  if( eDest==SRT_Except ){
    int addr = sqliteVdbeAddOp(v, OP_MakeRecord, nColumn, 0, 0, 0);
    sqliteVdbeAddOp(v, OP_NotFound, iParm, addr+3, 0, 0);
    sqliteVdbeAddOp(v, OP_Delete, iParm, 0, 0, 0);
  }else 

  /* If we are creating a set for an "expr IN (SELECT ...)" construct,
  ** then there should be a single item on the stack.  Write this
  ** item into the set table with bogus data.
  */

*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
**
** $Id: tokenize.c,v 1.19 2001/04/11 14:28:43 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <stdlib.h>

/*
** All the keywords of the SQL language are stored as in a hash
................................................................................
        /* Various debugging modes can be turned on and off using
        ** special SQL comments.  Check for the special comments
        ** here and take approriate action if found.
        */
#ifndef NDEBUG
        char *z = pParse->sLastToken.z;
        if( sqliteStrNICmp(z,"--parser-trace-on--",19)==0 ){
          trace = stderr;
          sqliteParserTrace(trace, "parser: ");
        }else if( sqliteStrNICmp(z,"--parser-trace-off--", 20)==0 ){
          trace = 0;
          sqliteParserTrace(trace, "parser: ");
        }else if( sqliteStrNICmp(z,"--vdbe-trace-on--",17)==0 ){
          pParse->db->flags |= SQLITE_VdbeTrace;
        }else if( sqliteStrNICmp(z,"--vdbe-trace-off--", 18)==0 ){

*************************************************************************
** An tokenizer for SQL
**
** This file contains C code that splits an SQL input string up into
** individual tokens and sends those tokens one-by-one over to the
** parser for analysis.
**
** $Id: tokenize.c,v 1.20 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <stdlib.h>

/*
** All the keywords of the SQL language are stored as in a hash
................................................................................
        /* Various debugging modes can be turned on and off using
        ** special SQL comments.  Check for the special comments
        ** here and take approriate action if found.
        */
#ifndef NDEBUG
        char *z = pParse->sLastToken.z;
        if( sqliteStrNICmp(z,"--parser-trace-on--",19)==0 ){
          trace = stdout;
          sqliteParserTrace(trace, "parser: ");
        }else if( sqliteStrNICmp(z,"--parser-trace-off--", 20)==0 ){
          trace = 0;
          sqliteParserTrace(trace, "parser: ");
        }else if( sqliteStrNICmp(z,"--vdbe-trace-on--",17)==0 ){
          pParse->db->flags |= SQLITE_VdbeTrace;
        }else if( sqliteStrNICmp(z,"--vdbe-trace-off--", 18)==0 ){

** inplicit conversion from one type to the other occurs as necessary.
** 
** Most of the code in this file is taken up by the sqliteVdbeExec()
** function which does the work of interpreting a VDBE program.
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.64 2001/09/13 21:53:10 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <unistd.h>

/*
** SQL is translated into a sequence of instructions to be
................................................................................
  zStack = p->zStack;
  aStack = p->aStack;
  p->tos = -1;

  rc = SQLITE_OK;
#ifdef MEMORY_DEBUG
  if( access("vdbe_trace",0)==0 ){
    p->trace = stderr;
  }
#endif
  /* if( pzErrMsg ){ *pzErrMsg = 0; } */
  if( sqlite_malloc_failed ) rc = SQLITE_NOMEM;
  for(pc=0; rc==SQLITE_OK && pc<p->nOp VERIFY(&& pc>=0); pc++){
    pOp = &p->aOp[pc];

................................................................................
    /* Only allow tracing if NDEBUG is not defined.
    */
#ifndef NDEBUG
    if( p->trace ){
      fprintf(p->trace,"%4d %-12s %4d %4d %s\n",
        pc, zOpName[pOp->opcode], pOp->p1, pOp->p2,
           pOp->p3 ? pOp->p3 : "");

    }
#endif

    switch( pOp->opcode ){

/*****************************************************************************
** What follows is a massive switch statement where each case implements a
................................................................................
  break;
}

/* Opcode: Distinct P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does not exist in file P1, then jump to P2.  If the record
** does already exist, then fall thru.  The record is not retrieved.
** The key is not popped from the stack.
**
** This operation is similar to NotFound except that this operation
** does not pop the key from the stack.
*/
/* Opcode: Found P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does exist in file P1, then jump to P2.  If the record
** does not exist, then fall thru.  The record is not retrieved.
** The key is popped from the stack.
*/
/* Opcode: NotFound P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does not exist in file P1, then jump to P2.  If the record
** does exist, then fall thru.  The record is not retrieved.
** The key is popped from the stack.
**
** The difference between this operation and Distinct is that
** Distinct does not pop the key from the stack.
*/
case OP_Distinct:
case OP_NotFound:
case OP_Found: {
................................................................................
** Get a new integer record number used as the key to a table.
** The record number is not previous used by the database file
** associated with cursor P1.  The new record number pushed 
** onto the stack.
*/
case OP_NewRecno: {
  int i = pOp->p1;
  int v;
  if( VERIFY( i<0 || i>=p->nCursor || ) p->aCsr[i].pCursor==0 ){
    v = 0;
  }else{
    int res, rx, cnt;
    cnt = 0;
    do{

      v = sqliteRandomInteger();



      rx = sqliteBtreeMoveto(p->aCsr[i].pCursor, &v, sizeof(v), &res);
      cnt++;
    }while( cnt<10 && rx==SQLITE_OK && res==0 );
  }
  VERIFY( NeedStack(p, p->tos+1); )
  p->tos++;
  aStack[p->tos].i = v;

** inplicit conversion from one type to the other occurs as necessary.
** 
** Most of the code in this file is taken up by the sqliteVdbeExec()
** function which does the work of interpreting a VDBE program.
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.65 2001/09/14 03:24:25 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#include <unistd.h>

/*
** SQL is translated into a sequence of instructions to be
................................................................................
  zStack = p->zStack;
  aStack = p->aStack;
  p->tos = -1;

  rc = SQLITE_OK;
#ifdef MEMORY_DEBUG
  if( access("vdbe_trace",0)==0 ){
    p->trace = stdout;
  }
#endif
  /* if( pzErrMsg ){ *pzErrMsg = 0; } */
  if( sqlite_malloc_failed ) rc = SQLITE_NOMEM;
  for(pc=0; rc==SQLITE_OK && pc<p->nOp VERIFY(&& pc>=0); pc++){
    pOp = &p->aOp[pc];

................................................................................
    /* Only allow tracing if NDEBUG is not defined.
    */
#ifndef NDEBUG
    if( p->trace ){
      fprintf(p->trace,"%4d %-12s %4d %4d %s\n",
        pc, zOpName[pOp->opcode], pOp->p1, pOp->p2,
           pOp->p3 ? pOp->p3 : "");
      fflush(p->trace);
    }
#endif

    switch( pOp->opcode ){

/*****************************************************************************
** What follows is a massive switch statement where each case implements a
................................................................................
  break;
}

/* Opcode: Distinct P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does not exist in file P1, then jump to P2.  If the record
** does already exist, then fall thru.  The cursor is left pointing
** at the record if it exists. The key is not popped from the stack.
**
** This operation is similar to NotFound except that this operation
** does not pop the key from the stack.
*/
/* Opcode: Found P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does exist in file P1, then jump to P2.  If the record
** does not exist, then fall thru.  The cursor is left pointing
** to the record if it exists.  The key is popped from the stack.
*/
/* Opcode: NotFound P1 P2 *
**
** Use the top of the stack as a key.  If a record with that key
** does not exist in file P1, then jump to P2.  If the record
** does exist, then fall thru.  The cursor is left pointing to the
** record if it exists.  The key is popped from the stack.
**
** The difference between this operation and Distinct is that
** Distinct does not pop the key from the stack.
*/
case OP_Distinct:
case OP_NotFound:
case OP_Found: {
................................................................................
** Get a new integer record number used as the key to a table.
** The record number is not previous used by the database file
** associated with cursor P1.  The new record number pushed 
** onto the stack.
*/
case OP_NewRecno: {
  int i = pOp->p1;
  static int v = 0;
  if( VERIFY( i<0 || i>=p->nCursor || ) p->aCsr[i].pCursor==0 ){
    v = 0;
  }else{
    int res, rx, cnt;
    cnt = 0;
    do{
      if( v==0 || cnt>5 ){
        v = sqliteRandomInteger();
      }else{
        v += sqliteRandomByte() + 1;
      }
      rx = sqliteBtreeMoveto(p->aCsr[i].pCursor, &v, sizeof(v), &res);
      cnt++;
    }while( cnt<10 && rx==SQLITE_OK && res==0 );
  }
  VERIFY( NeedStack(p, p->tos+1); )
  p->tos++;
  aStack[p->tos].i = v;

#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the INSERT statement that takes is
# result from a SELECT.
#
# $Id: insert2.test,v 1.2 2000/06/07 15:11:27 drh Exp $

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

# Create some tables with data that we can select against
#
do_test insert2-1.0 {
................................................................................
} {1 0 2 1 3 2 4 2 5 3 6 3 7 3 8 3 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 4 17 5 18 5 19 5 20 5}

# Insert into a new table from the old one.
#
do_test insert2-1.1 {
  execsql {
    CREATE TABLE t1(log int, cnt int);

    INSERT INTO t1 SELECT log, count(*) FROM d1 GROUP BY log;
  }
  execsql {SELECT * FROM t1 ORDER BY log}
} {0 1 1 1 2 2 3 4 4 8 5 4}

do_test insert2-1.2 {
  catch {execsql {DROP TABLE t1}}
  execsql {
    CREATE TABLE t1(log int, cnt int);
    INSERT INTO t1 
       SELECT log, count(*) FROM d1 GROUP BY log
       EXCEPT SELECT n-1,log FROM d1;

#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the INSERT statement that takes is
# result from a SELECT.
#
# $Id: insert2.test,v 1.3 2001/09/14 03:24:25 drh Exp $

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

# Create some tables with data that we can select against
#
do_test insert2-1.0 {
................................................................................
} {1 0 2 1 3 2 4 2 5 3 6 3 7 3 8 3 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 4 17 5 18 5 19 5 20 5}

# Insert into a new table from the old one.
#
do_test insert2-1.1 {
  execsql {
    CREATE TABLE t1(log int, cnt int);
---vdbe-trace-on--
    INSERT INTO t1 SELECT log, count(*) FROM d1 GROUP BY log;
  }
  execsql {SELECT * FROM t1 ORDER BY log}
} {0 1 1 1 2 2 3 4 4 8 5 4}

do_test insert2-1.2 {
  catch {execsql {DROP TABLE t1}}
  execsql {
    CREATE TABLE t1(log int, cnt int);
    INSERT INTO t1 
       SELECT log, count(*) FROM d1 GROUP BY log
       EXCEPT SELECT n-1,log FROM d1;

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is database locks.
#
# $Id: lock.test,v 1.8 2001/04/03 16:53:22 drh Exp $

if {$dbprefix=="gdbm:" && $::tcl_platform(platform)!="windows"} {

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

# Create a largish table
#
do_test lock-1.0 {

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is database locks.
#
# $Id: lock.test,v 1.9 2001/09/14 03:24:25 drh Exp $

if {0} {

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

# Create a largish table
#
do_test lock-1.0 {

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is exercising the code in main.c.
#
# $Id: main.test,v 1.6 2001/04/04 11:48:58 drh Exp $

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

# Tests of the sqlite_complete() function.
#
do_test main-1.1 {
................................................................................
do_test main-1.14 {
  db complete {SELECT a-b FROM t1; }
} {1}
do_test main-1.15 {
  db complete {SELECT a-b FROM t1 }
} {0}

# Try to open a database with a corrupt master file.
#
do_test main-2.0 {
  catch {db close}
  foreach f [glob -nocomplain testdb/*] {file delete -force $f}
  file delete -force testdb
  file mkdir testdb
  set fd [open testdb/sqlite_master.tbl w]
  puts $fd hi!
  close $fd
  set v [catch {sqlite db testdb} msg]
  lappend v $msg
} {0 {}}

# Here are some tests for tokenize.c.  
#
do_test main-3.1 {
  catch {db close}

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is exercising the code in main.c.
#
# $Id: main.test,v 1.7 2001/09/14 03:24:25 drh Exp $

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

# Tests of the sqlite_complete() function.
#
do_test main-1.1 {
................................................................................
do_test main-1.14 {
  db complete {SELECT a-b FROM t1; }
} {1}
do_test main-1.15 {
  db complete {SELECT a-b FROM t1 }
} {0}

# Try to open a database with a corrupt database file.
#
do_test main-2.0 {
  catch {db close}

  file delete -force test.db

  set fd [open test.db w]
  puts $fd hi!
  close $fd
  set v [catch {sqlite db test.db} msg]
  lappend v $msg
} {0 {}}

# Here are some tests for tokenize.c.  
#
do_test main-3.1 {
  catch {db close}

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is page cache subsystem.
#
# $Id: pager.test,v 1.8 2001/08/20 00:33:58 drh Exp $


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

if {$dbprefix!="memory:" && [info commands pager_open]!=""} {

# Basic sanity check.  Open and close a pager.
#
do_test pager-1.0 {
  catch {file delete -force ptf1.db}
  catch {file delete -force ptf1.db-journal}
  set v [catch {

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is page cache subsystem.
#
# $Id: pager.test,v 1.9 2001/09/14 03:24:25 drh Exp $


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

if {[info commands pager_open]!=""} {

# Basic sanity check.  Open and close a pager.
#
do_test pager-1.0 {
  catch {file delete -force ptf1.db}
  catch {file delete -force ptf1.db-journal}
  set v [catch {

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the SELECT statement.
#
# $Id: select2.test,v 1.12 2001/09/13 21:53:10 drh Exp $

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

# Create a table with some data
#
execsql {CREATE TABLE tbl1(f1 int, f2 int)}
................................................................................
do_test select2-2.0 {
  execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int)}
  set f [open ./testdata1.txt w]
  for {set i 1} {$i<=30000} {incr i} {
    puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"
  }
  close $f

  execsql {COPY tbl2 FROM './testdata1.txt'}
  file delete -force ./testdata1.txt
} {}

do_test select2-2.1 {
  execsql {SELECT count(*) FROM tbl2}
} {30000}

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the SELECT statement.
#
# $Id: select2.test,v 1.13 2001/09/14 03:24:25 drh Exp $

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

# Create a table with some data
#
execsql {CREATE TABLE tbl1(f1 int, f2 int)}
................................................................................
do_test select2-2.0 {
  execsql {CREATE TABLE tbl2(f1 int, f2 int, f3 int)}
  set f [open ./testdata1.txt w]
  for {set i 1} {$i<=30000} {incr i} {
    puts $f "$i\t[expr {$i*2}]\t[expr {$i*3}]"
  }
  close $f
  # execsql {--vdbe-trace-on--}
  execsql {COPY tbl2 FROM './testdata1.txt'}
  file delete -force ./testdata1.txt
} {}

do_test select2-2.1 {
  execsql {SELECT count(*) FROM tbl2}
} {30000}

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the CREATE TABLE statement.
#
# $Id: table.test,v 1.10 2001/09/13 21:53:10 drh Exp $

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

# Create a basic table and verify it is added to sqlite_master
#
do_test table-1.1 {
................................................................................
} {test1 test1 table}

# Close and reopen the database.  Verify that everything is
# still the same.
#
do_test table-1.4 {
  db close
  sqlite db testdb
  execsql {SELECT name, tbl_name, type from sqlite_master WHERE type!='meta'}
} {test1 test1 table}

# Drop the database and make sure it disappears.
#
do_test table-1.5 {
  execsql {DROP TABLE test1}
  execsql {SELECT * FROM sqlite_master WHERE type!='meta'}
} {}

# Verify that the file associated with the database is gone.
#
do_test table-1.5 {
  lsort [glob -nocomplain testdb/*.tbl]
} {testdb/sqlite_master.tbl}

# Close and reopen the database.  Verify that the table is
# still gone.
#
do_test table-1.6 {
  db close
  sqlite db testdb
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {}

# Repeat the above steps, but this time quote the table name.
#
do_test table-1.10 {
  execsql {CREATE TABLE "create" (f1 int)}
................................................................................
} {1 {table test2 already exists}}
do_test table-2.1b {
  set v [catch {execsql {CREATE TABLE sqlite_master(two text)}} msg]
  lappend v $msg
} {1 {table sqlite_master already exists}}
do_test table-2.1c {
  db close
  sqlite db testdb
  set v [catch {execsql {CREATE TABLE sqlite_master(two text)}} msg]
  lappend v $msg
} {1 {table sqlite_master already exists}}
do_test table-2.1d {
  execsql {DROP TABLE test2; SELECT name FROM sqlite_master WHERE type!='meta'}
} {}

................................................................................
do_test table-2.2a {
  execsql {CREATE TABLE test2(one text); CREATE INDEX test3 ON test2(one)}
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {1 {there is already an index named test3}}
do_test table-2.2b {
  db close
  sqlite db testdb
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {1 {there is already an index named test3}}
do_test table-2.2c {



  execsql {DROP INDEX test3}
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {0 {}}
do_test table-2.2d {
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} {test2 test3}
do_test table-2.2e {
  execsql {DROP TABLE test2; DROP TABLE test3}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} {}

# Create a table with many field names
#
set big_table \
................................................................................
} {1 {table biG already exists}}
do_test table-3.4 {
  set v [catch {execsql {CREATE TABLE bIg(xyz foo)}} msg]
  lappend v $msg
} {1 {table bIg already exists}}
do_test table-3.5 {
  db close
  sqlite db testdb
  set v [catch {execsql {CREATE TABLE Big(xyz foo)}} msg]
  lappend v $msg
} {1 {table Big already exists}}
do_test table-3.6 {
  execsql {DROP TABLE big}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {}
................................................................................
    append sql "last_field text)"
    execsql $sql
  }
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r
do_test table-4.1b {
  db close
  sqlite db testdb
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r

# Drop the even numbered tables
#
set r {}
for {set i 1} {$i<=100} {incr i 2} {
  lappend r test$i
}

do_test table-4.2 {
  for {set i 2} {$i<=100} {incr i 2} {
    set sql "DROP TABLE TEST$i"
    execsql $sql
  }
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r


# Drop the odd number tables
#
do_test table-4.3 {
  for {set i 1} {$i<=100} {incr i 2} {
    set sql "DROP TABLE test$i"
    execsql $sql
................................................................................
  execsql {CREATE TABLE test1(f1 int)}
  execsql {EXPLAIN DROP TABLE test1}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {test1}

# Create a table with a goofy name
#
do_test table-6.1 {
  execsql {CREATE TABLE 'Spaces In This Name!'(x int)}
  execsql {INSERT INTO 'spaces in this name!' VALUES(1)}
  set list [glob -nocomplain testdb/spaces*.tbl]
} {testdb/spaces+in+this+name+.tbl}

# Try using keywords as table names or column names.
# 
do_test table-7.1 {
  set v [catch {execsql {
    CREATE TABLE weird(
      desc text,

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the CREATE TABLE statement.
#
# $Id: table.test,v 1.11 2001/09/14 03:24:25 drh Exp $

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

# Create a basic table and verify it is added to sqlite_master
#
do_test table-1.1 {
................................................................................
} {test1 test1 table}

# Close and reopen the database.  Verify that everything is
# still the same.
#
do_test table-1.4 {
  db close
  sqlite db test.db
  execsql {SELECT name, tbl_name, type from sqlite_master WHERE type!='meta'}
} {test1 test1 table}

# Drop the database and make sure it disappears.
#
do_test table-1.5 {
  execsql {DROP TABLE test1}
  execsql {SELECT * FROM sqlite_master WHERE type!='meta'}
} {}







# Close and reopen the database.  Verify that the table is
# still gone.
#
do_test table-1.6 {
  db close
  sqlite db test.db
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {}

# Repeat the above steps, but this time quote the table name.
#
do_test table-1.10 {
  execsql {CREATE TABLE "create" (f1 int)}
................................................................................
} {1 {table test2 already exists}}
do_test table-2.1b {
  set v [catch {execsql {CREATE TABLE sqlite_master(two text)}} msg]
  lappend v $msg
} {1 {table sqlite_master already exists}}
do_test table-2.1c {
  db close
  sqlite db test.db
  set v [catch {execsql {CREATE TABLE sqlite_master(two text)}} msg]
  lappend v $msg
} {1 {table sqlite_master already exists}}
do_test table-2.1d {
  execsql {DROP TABLE test2; SELECT name FROM sqlite_master WHERE type!='meta'}
} {}

................................................................................
do_test table-2.2a {
  execsql {CREATE TABLE test2(one text); CREATE INDEX test3 ON test2(one)}
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {1 {there is already an index named test3}}
do_test table-2.2b {
  db close
  sqlite db test.db
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {1 {there is already an index named test3}}
do_test table-2.2c {
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} {test2 test3}
do_test table-2.2d {
  execsql {DROP INDEX test3}
  set v [catch {execsql {CREATE TABLE test3(two text)}} msg]
  lappend v $msg
} {0 {}}
do_test table-2.2e {
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} {test2 test3}
do_test table-2.2f {
  execsql {DROP TABLE test2; DROP TABLE test3}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} {}

# Create a table with many field names
#
set big_table \
................................................................................
} {1 {table biG already exists}}
do_test table-3.4 {
  set v [catch {execsql {CREATE TABLE bIg(xyz foo)}} msg]
  lappend v $msg
} {1 {table bIg already exists}}
do_test table-3.5 {
  db close
  sqlite db test.db
  set v [catch {execsql {CREATE TABLE Big(xyz foo)}} msg]
  lappend v $msg
} {1 {table Big already exists}}
do_test table-3.6 {
  execsql {DROP TABLE big}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {}
................................................................................
    append sql "last_field text)"
    execsql $sql
  }
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r
do_test table-4.1b {
  db close
  sqlite db test.db
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r

# Drop the even numbered tables
#
set r {}
for {set i 1} {$i<=100} {incr i 2} {
  lappend r test$i
}
#execsql {--vdbe-trace-on--}
do_test table-4.2 {
  for {set i 2} {$i<=100} {incr i 2} {
    set sql "DROP TABLE TEST$i"
    execsql $sql
  }
  execsql {SELECT name FROM sqlite_master WHERE type!='meta' ORDER BY name}
} $r
#exit

# Drop the odd number tables
#
do_test table-4.3 {
  for {set i 1} {$i<=100} {incr i 2} {
    set sql "DROP TABLE test$i"
    execsql $sql
................................................................................
  execsql {CREATE TABLE test1(f1 int)}
  execsql {EXPLAIN DROP TABLE test1}
  execsql {SELECT name FROM sqlite_master WHERE type!='meta'}
} {test1}

# Create a table with a goofy name
#
#do_test table-6.1 {
#  execsql {CREATE TABLE 'Spaces In This Name!'(x int)}
#  execsql {INSERT INTO 'spaces in this name!' VALUES(1)}
#  set list [glob -nocomplain testdb/spaces*.tbl]
#} {testdb/spaces+in+this+name+.tbl}

# Try using keywords as table names or column names.
# 
do_test table-7.1 {
  set v [catch {execsql {
    CREATE TABLE weird(
      desc text,

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is database locks.
#
# $Id: trans.test,v 1.2 2001/04/12 23:21:59 drh Exp $


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

if {$dbprefix=="gdbm:" && $::tcl_platform(platform)!="windows"} {

# Create several tables to work with.
#
do_test trans-1.0 {
  execsql {
    CREATE TABLE one(a int PRIMARY KEY, b text);
    INSERT INTO one VALUES(1,'one');

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this script is database locks.
#
# $Id: trans.test,v 1.3 2001/09/14 03:24:25 drh Exp $


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

if {0} {

# Create several tables to work with.
#
do_test trans-1.0 {
  execsql {
    CREATE TABLE one(a int PRIMARY KEY, b text);
    INSERT INTO one VALUES(1,'one');

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the VACUUM statement.
#
# $Id: vacuum.test,v 1.4 2001/09/13 21:53:10 drh Exp $

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



# Try to vacuum a non-existant table.
#
do_test vacuum-1.1 {
  set v [catch {execsql {VACUUM dummy1}} msg]
  lappend v $msg
} {1 {no such table or index: dummy1}}
................................................................................
  set a2 [file mtime testdb/test2.tbl]
  set a3 [file mtime testdb/index1.tbl]
  expr {$a1>$b1 && $a2>$b2 && $a3>$b3}
} {1}
} ;# End if( platform!=windows )

finish_test

#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the VACUUM statement.
#
# $Id: vacuum.test,v 1.5 2001/09/14 03:24:25 drh Exp $

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

if {0} {

# Try to vacuum a non-existant table.
#
do_test vacuum-1.1 {
  set v [catch {execsql {VACUUM dummy1}} msg]
  lappend v $msg
} {1 {no such table or index: dummy1}}
................................................................................
  set a2 [file mtime testdb/test2.tbl]
  set a3 [file mtime testdb/index1.tbl]
  expr {$a1>$b1 && $a2>$b2 && $a3>$b3}
} {1}
} ;# End if( platform!=windows )

finish_test

}