From c5aee669bbdf58f38f1063934a1d93286506de7b Mon Sep 17 00:00:00 2001 From: Peter Geoghegan Date: Fri, 29 May 2015 02:53:41 -0700 Subject: [PATCH 4/4] Additional defensive measure --- src/backend/optimizer/util/plancat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c index 1b81f4c..4f38972 100644 --- a/src/backend/optimizer/util/plancat.c +++ b/src/backend/optimizer/util/plancat.c @@ -758,7 +758,7 @@ infer_collation_opclass_match(InferenceElem *elem, Relation idxRel, if (((Var *) elem->expr)->varattno == attno) return true; } - else + else if (attno == 0) { Node *nattExpr = list_nth(idxExprs, (natt - 1) - nplain); -- 1.9.1