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Additional refinements to Expr handling. Restore compression of trigger

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expressions.  Change Expr.zToken to Expr.u.zToken and added Expr.u.iValue.
Remove an unnecessary ExprDup from CHECK constraint processing.  And so forth. (CVS 6682)

FossilOrigin-Name: 4ac2bdfbb4230b6ceaae87e738fa61036bbe03cb
This commit is contained in:
drh
2009-05-28 01:00:55 +00:00
parent b7916a78ff
commit 33e619fc1c
23 changed files with 296 additions and 197 deletions
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12
src/where.c
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@@ -16,7 +16,7 @@
** so is applicable. Because this module is responsible for selecting
** indices, you might also think of this module as the "query optimizer".
**
** $Id: where.c,v 1.398 2009/05/27 10:31:29 drh Exp $
** $Id: where.c,v 1.399 2009/05/28 01:00:55 drh Exp $
*/
#include "sqliteInt.h"
@@ -658,7 +658,7 @@ static int isLikeOrGlob(
(pColl->type!=SQLITE_COLL_NOCASE || !*pnoCase) ){
return 0;
}
z = pRight->zToken;
z = pRight->u.zToken;
cnt = 0;
if( z ){
while( (c=z[cnt])!=0 && c!=wc[0] && c!=wc[1] && c!=wc[2] ){
@@ -691,7 +691,7 @@ static int isMatchOfColumn(
if( pExpr->op!=TK_FUNCTION ){
return 0;
}
if( sqlite3StrICmp(pExpr->zToken,"match")!=0 ){
if( sqlite3StrICmp(pExpr->u.zToken,"match")!=0 ){
return 0;
}
pList = pExpr->x.pList;
@@ -1161,12 +1161,12 @@ static void exprAnalyze(
pLeft = pExpr->x.pList->a[1].pExpr;
pRight = pExpr->x.pList->a[0].pExpr;
pStr1 = sqlite3Expr(db, TK_STRING, pRight->zToken);
if( pStr1 ) pStr1->zToken[nPattern] = 0;
pStr1 = sqlite3Expr(db, TK_STRING, pRight->u.zToken);
if( pStr1 ) pStr1->u.zToken[nPattern] = 0;
pStr2 = sqlite3ExprDup(db, pStr1, 0);
if( !db->mallocFailed ){
u8 c, *pC;
pC = (u8*)&pStr2->zToken[nPattern-1];
pC = (u8*)&pStr2->u.zToken[nPattern-1];
c = *pC;
if( noCase ){
if( c=='@' ) isComplete = 0;