database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-14 00:22:38 +03:00
Code Activity

Make sure the min() and max() optimizations work on empty indexed tables.

Browse Source 
Ticket #296. (CVS 914)

FossilOrigin-Name: 98ef6110068e5ed3cd77a14b004f890b79b731f7
This commit is contained in:
drh
2003-04-17 12:44:23 +00:00
parent 8396566204
commit d4d595f94c
6 changed files with 74 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/select.c
View File

@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle SELECT statements in SQLite.
**
** $Id: select.c,v 1.130 2003/03/31 13:36:09 drh Exp $
** $Id: select.c,v 1.131 2003/04/17 12:44:24 drh Exp $
*/
#include "sqliteInt.h"
@@ -1820,6 +1820,7 @@ static int simpleMinMaxQuery(Parse *pParse, Select *p, int eDest, int iParm){
sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
sqliteVdbeAddOp(v, OP_OpenRead, base, pTab->tnum);
sqliteVdbeChangeP3(v, -1, pTab->zName, P3_STATIC);
cont = sqliteVdbeMakeLabel(v);
if( pIdx==0 ){
sqliteVdbeAddOp(v, seekOp, base, 0);
}else{
@@ -1835,7 +1836,6 @@ static int simpleMinMaxQuery(Parse *pParse, Select *p, int eDest, int iParm){
memset(&eListItem, 0, sizeof(eListItem));
eList.a = &eListItem;
eList.a[0].pExpr = pExpr;
cont = sqliteVdbeMakeLabel(v);
selectInnerLoop(pParse, p, &eList, 0, 0, 0, -1, eDest, iParm, cont, cont);
sqliteVdbeResolveLabel(v, cont);
sqliteVdbeAddOp(v, OP_Close, base, 0);