From 84ccfdf0879150e1349f6933a348976e5d423499 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 27 Feb 2000 19:45:44 +0000 Subject: [PATCH] Avoid a little bit of unnecessary computation in canonicalize_qual. --- src/backend/optimizer/prep/prepqual.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/backend/optimizer/prep/prepqual.c b/src/backend/optimizer/prep/prepqual.c index 7538d858d9..5f92c545cc 100644 --- a/src/backend/optimizer/prep/prepqual.c +++ b/src/backend/optimizer/prep/prepqual.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.22 2000/01/28 03:22:36 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.23 2000/02/27 19:45:44 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -139,7 +139,8 @@ canonicalize_qual(Expr *qual, bool removeAndFlag) * and only one relation is mentioned, and DNF is no larger than * the CNF representation. (Pretty shaky; can we improve on this?) */ - if (dnfok && dnfnodes <= cnfnodes && or_clause((Node *) newqual) && + if (cnfok && dnfok && dnfnodes <= cnfnodes && + or_clause((Node *) newqual) && NumRelids((Node *) newqual) == 1) cnfok = false; /* -- 2.11.0