From a053437d9ee71ba99a648a76652401dcc590cf13 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 28 Jan 2007 02:53:34 +0000 Subject: [PATCH] Dept of second thoughts: the IQ of estimate_array_length() needs to be kept on par with that of scalararraysel(), else estimates that should track might not. Hence teach it about binary-compatible cases, too. --- src/backend/utils/adt/selfuncs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index 7bf135c2b2..0780e52a89 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -15,7 +15,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.222 2007/01/28 01:37:38 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.223 2007/01/28 02:53:34 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1698,6 +1698,9 @@ scalararraysel(PlannerInfo *root, int estimate_array_length(Node *arrayexpr) { + /* look through any binary-compatible relabeling of arrayexpr */ + arrayexpr = strip_array_coercion(arrayexpr); + if (arrayexpr && IsA(arrayexpr, Const)) { Datum arraydatum = ((Const *) arrayexpr)->constvalue;