** 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 1.98 2001/11/12 13:10:53 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** The following global variable is incremented every time a cursor
** moves, either by the OP_MoveTo or the OP_Next opcode.  The test
................................................................................
    VERIFY( if( p->tos<0 ) goto not_enough_stack; )
    Integerify(p, p->tos);
    start = aStack[p->tos].i;
    POPSTACK;
  }else{
    start = pOp->p1;
  }
  if( start>0 ) start--;
  VERIFY( if( p->tos<0 ) goto not_enough_stack; )
  if( Stringify(p, p->tos) ) goto no_mem;

  /* "n" will be the number of characters in the input string.
  ** For iso8859, the number of characters is the number of bytes.
  ** Buf for UTF-8, some characters can use multiple bytes and the
  ** situation is more complex. 

** 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 1.99 2001/11/12 13:51:43 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** The following global variable is incremented every time a cursor
** moves, either by the OP_MoveTo or the OP_Next opcode.  The test
................................................................................
    VERIFY( if( p->tos<0 ) goto not_enough_stack; )
    Integerify(p, p->tos);
    start = aStack[p->tos].i;
    POPSTACK;
  }else{
    start = pOp->p1;
  }
  if( start ) start--;
  VERIFY( if( p->tos<0 ) goto not_enough_stack; )
  if( Stringify(p, p->tos) ) goto no_mem;

  /* "n" will be the number of characters in the input string.
  ** For iso8859, the number of characters is the number of bytes.
  ** Buf for UTF-8, some characters can use multiple bytes and the
  ** situation is more complex. 

**    May you share freely, never taking more than you give.
**
*************************************************************************
** This module contains C code that generates VDBE code used to process
** the WHERE clause of SQL statements.  Also found here are subroutines
** to generate VDBE code to evaluate expressions.
**
** $Id: where.c,v 1.27 2001/11/09 13:41:10 drh Exp $
*/
#include "sqliteInt.h"

/*
** The query generator uses an array of instances of this structure to
** help it analyze the subexpressions of the WHERE clause.  Each WHERE
** clause subexpression is separated from the others by an AND operator.
................................................................................
          ){
            sqliteExprCode(pParse, pExpr->pLeft);
            geFlag = pExpr->op==TK_LE;
            aExpr[k].p = 0;
            break;
          }
        }


      }
      brk = pLevel->brk = sqliteVdbeMakeLabel(v);
      cont = pLevel->cont = sqliteVdbeMakeLabel(v);
      if( nEqColumn>0 || (score&2)!=0 ){
        sqliteVdbeAddOp(v, OP_MakeKey, nEqColumn + ((score&2)!=0), 0);
        if( !geFlag ){
          sqliteVdbeAddOp(v, OP_IncrKey, 0, 0);

**    May you share freely, never taking more than you give.
**
*************************************************************************
** This module contains C code that generates VDBE code used to process
** the WHERE clause of SQL statements.  Also found here are subroutines
** to generate VDBE code to evaluate expressions.
**
** $Id: where.c,v 1.28 2001/11/12 13:51:43 drh Exp $
*/
#include "sqliteInt.h"

/*
** The query generator uses an array of instances of this structure to
** help it analyze the subexpressions of the WHERE clause.  Each WHERE
** clause subexpression is separated from the others by an AND operator.
................................................................................
          ){
            sqliteExprCode(pParse, pExpr->pLeft);
            geFlag = pExpr->op==TK_LE;
            aExpr[k].p = 0;
            break;
          }
        }
      }else{
        geFlag = 1;
      }
      brk = pLevel->brk = sqliteVdbeMakeLabel(v);
      cont = pLevel->cont = sqliteVdbeMakeLabel(v);
      if( nEqColumn>0 || (score&2)!=0 ){
        sqliteVdbeAddOp(v, OP_MakeKey, nEqColumn + ((score&2)!=0), 0);
        if( !geFlag ){
          sqliteVdbeAddOp(v, OP_IncrKey, 0, 0);

proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2001 ??? ?? (2.1.0)} {
<li>Change the format of data records so that records up to 16MB in size
    can be stored.</li>
<li>Change the format of indices to allow for better query optimization.</li>
<li>Implement the "LIMIT ... OFFSET ..." clause on SELECT statements.</li>
}

chng {2001 Nov 3 (2.0.8)} {

proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2001 Nov 12 (2.1.0)} {
<li>Change the format of data records so that records up to 16MB in size
    can be stored.</li>
<li>Change the format of indices to allow for better query optimization.</li>
<li>Implement the "LIMIT ... OFFSET ..." clause on SELECT statements.</li>
}

chng {2001 Nov 3 (2.0.8)} {