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Fix oversight in MIN/MAX optimization: must not return NULL entries

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from index, since the aggregates ignore NULLs.
This commit is contained in:
Tom Lane
2005-04-12 05:11:28 +00:00
parent 2e7a68896b
commit 7ace43e0c2
3 changed files with 29 additions and 15 deletions
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5
src/backend/optimizer/plan/createplan.c
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@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.178 2005/04/06 16:34:05 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.179 2005/04/12 05:11:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -73,7 +73,6 @@ static void fix_indxqual_sublist(List *indexqual, IndexOptInfo *index,
static Node *fix_indxqual_operand(Node *node, IndexOptInfo *index,
Oid *opclass);
static List *get_switched_clauses(List *clauses, Relids outerrelids);
static List *order_qual_clauses(Query *root, List *clauses);
static void copy_path_costsize(Plan *dest, Path *src);
static void copy_plan_costsize(Plan *dest, Plan *src);
static SeqScan *make_seqscan(List *qptlist, List *qpqual, Index scanrelid);
@ -1417,7 +1416,7 @@ get_switched_clauses(List *clauses, Relids outerrelids)
* For now, we just move any quals that contain SubPlan references (but not
* InitPlan references) to the end of the list.
*/
static List *
List *
order_qual_clauses(Query *root, List *clauses)
{
List *nosubplans;