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Fix build_minmax_path() to cope if an IS NULL clause turns up in the

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indexable-clauses list for a btree index.  Formerly it just Asserted that
all such clauses were opclauses, but that's no longer true in 8.3.
Per bug #3796 from Matthias Schoeneich.
This commit is contained in:
Tom Lane
2007-12-03 22:37:17 +00:00
parent 50eed107ae
commit f538329f9d
1 changed files with 4 additions and 2 deletions
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6
src/backend/optimizer/plan/planagg.c
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@@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.34 2007/11/15 21:14:36 momjian Exp $ * $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.35 2007/12/03 22:37:17 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@@ -368,7 +368,9 @@ build_minmax_path(PlannerInfo *root, RelOptInfo *rel, MinMaxAggInfo *info)
RestrictInfo *rinfo = (RestrictInfo *) lfirst(ll); RestrictInfo *rinfo = (RestrictInfo *) lfirst(ll);
int strategy; int strategy;
Assert(is_opclause(rinfo->clause)); /* Could be an IS_NULL test, if so ignore */
if (!is_opclause(rinfo->clause))
continue;
strategy = strategy =
get_op_opfamily_strategy(((OpExpr *) rinfo->clause)->opno, get_op_opfamily_strategy(((OpExpr *) rinfo->clause)->opno,
index->opfamily[prevcol]); index->opfamily[prevcol]);