diff options
Diffstat (limited to 'src/backend/optimizer/plan/setrefs.c')
| -rw-r--r-- | src/backend/optimizer/plan/setrefs.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/backend/optimizer/plan/setrefs.c b/src/backend/optimizer/plan/setrefs.c index 1ca26baa259..3585a703fbd 100644 --- a/src/backend/optimizer/plan/setrefs.c +++ b/src/backend/optimizer/plan/setrefs.c @@ -2289,9 +2289,11 @@ set_join_references(PlannerInfo *root, Join *join, int rtoffset) * the outer-join level at which they are used, Vars seen in the * NestLoopParam expression may have nullingrels that are just a * subset of those in the Vars actually available from the outer - * side. Not checking this exactly is a bit grotty, but the work - * needed to make things match up perfectly seems well out of - * proportion to the value. + * side. Another case that can cause that to happen is explained + * in the comments for process_subquery_nestloop_params. Not + * checking this exactly is a bit grotty, but the work needed to + * make things match up perfectly seems well out of proportion to + * the value. */ nlp->paramval = (Var *) fix_upper_expr(root, (Node *) nlp->paramval, |