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Change to reduce the number of OP_Null opcodes in "WHERE <rowid> IN (x,y,z)" queries. (CVS 5763)

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FossilOrigin-Name: 33b59a3db0b1797663ae840ceaca1b23a9a9e3b0
This commit is contained in:
danielk1977
2008-10-02 16:42:06 +00:00
parent a8b3018da4
commit 4e7f36a27f
3 changed files with 9 additions and 9 deletions
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4
src/expr.c
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@@ -12,7 +12,7 @@
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.395 2008/10/02 13:50:56 danielk1977 Exp $
** $Id: expr.c,v 1.396 2008/10/02 16:42:07 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -1348,6 +1348,7 @@ void sqlite3CodeSubselect(
/* Loop through each expression in <exprlist>. */
r1 = sqlite3GetTempReg(pParse);
r2 = sqlite3GetTempReg(pParse);
sqlite3VdbeAddOp2(v, OP_Null, 0, r2);
for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){
Expr *pE2 = pItem->pExpr;
@@ -1368,7 +1369,6 @@ void sqlite3CodeSubselect(
pParse->disableColCache--;
if( isRowid ){
sqlite3VdbeAddOp2(v, OP_Null, 0, r2);
sqlite3VdbeAddOp2(v, OP_MustBeInt, r3, sqlite3VdbeCurrentAddr(v)+2);
sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3);
}else{