From e243bd79d98ff4dc5acc20a290dbdc1ad2e17e91 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Mon, 11 Nov 2013 16:36:27 -0500 Subject: [PATCH] Fix failure with whole-row reference to a subquery. Simple oversight in commit 1cb108efb0e60d87e4adec38e7636b6e8efbeb57 --- recursively examining a subquery output column is only sane if the original Var refers to a single output column. Found by Kevin Grittner. --- src/backend/utils/adt/selfuncs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index d8c1a889ed..9e00f22994 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -4504,6 +4504,12 @@ examine_simple_variable(PlannerInfo *root, Var *var, RelOptInfo *rel; TargetEntry *ste; + /* + * Punt if it's a whole-row var rather than a plain column reference. + */ + if (var->varattno == InvalidAttrNumber) + return; + /* * Punt if subquery uses set operations or GROUP BY, as these will * mash underlying columns' stats beyond recognition. (Set ops are -- 2.40.0