From 83fd58dff02f4f1912c87194d8f9db7fe9e644c4 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 24 Sep 2002 18:38:23 +0000 Subject: [PATCH] Add missing correction of sublevelsup when pulling up a subquery. Fixes problem with cases like SELECT * FROM foo t WHERE NOT EXISTS (SELECT remoteid FROM (SELECT f1 as remoteid FROM foo WHERE f1 = t.f1) AS t1) --- src/backend/optimizer/plan/planner.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/src/backend/optimizer/plan/planner.c b/src/backend/optimizer/plan/planner.c index 5510a74957..b607173a4c 100644 --- a/src/backend/optimizer/plan/planner.c +++ b/src/backend/optimizer/plan/planner.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planner.c,v 1.124 2002/09/04 20:31:21 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planner.c,v 1.125 2002/09/24 18:38:23 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -337,17 +337,23 @@ pull_up_subqueries(Query *parse, Node *jtnode, bool below_outer_join) /* * Now make a modifiable copy of the subquery that we can run - * OffsetVarNodes on. + * OffsetVarNodes and IncrementVarSublevelsUp on. */ subquery = copyObject(subquery); /* - * Adjust varnos in subquery so that we can append its + * Adjust level-0 varnos in subquery so that we can append its * rangetable to upper query's. */ rtoffset = length(parse->rtable); OffsetVarNodes((Node *) subquery, rtoffset, 0); + /* + * Upper-level vars in subquery are now one level closer to their + * parent than before. + */ + IncrementVarSublevelsUp((Node *) subquery, -1, 1); + /* * Replace all of the top query's references to the subquery's * outputs with copies of the adjusted subtlist items, being