diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/optimizer/util/restrictinfo.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/backend/optimizer/util/restrictinfo.c b/src/backend/optimizer/util/restrictinfo.c index d2bc096e1cc..760d24bebf3 100644 --- a/src/backend/optimizer/util/restrictinfo.c +++ b/src/backend/optimizer/util/restrictinfo.c @@ -544,13 +544,24 @@ clause_is_computable_at(PlannerInfo *root, RestrictInfo *rinfo, Relids eval_relids) { - Relids clause_relids = rinfo->clause_relids; + Relids clause_relids; ListCell *lc; /* Nothing to do if no outer joins have been performed yet. */ if (!bms_overlap(eval_relids, root->outer_join_rels)) return true; + /* + * For an ordinary qual clause, we consider the actual clause_relids as + * explained above. However, it's possible for multiple members of a + * group of clone quals to have the same clause_relids, so for clones use + * the required_relids instead to ensure we select just one of them. + */ + if (rinfo->has_clone || rinfo->is_clone) + clause_relids = rinfo->required_relids; + else + clause_relids = rinfo->clause_relids; + foreach(lc, root->join_info_list) { SpecialJoinInfo *sjinfo = (SpecialJoinInfo *) lfirst(lc); |