diff options
Diffstat (limited to 'src/backend/optimizer/path')
| -rw-r--r-- | src/backend/optimizer/path/equivclass.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/backend/optimizer/path/equivclass.c b/src/backend/optimizer/path/equivclass.c index 9f39f46..06f89a6 100644 --- a/src/backend/optimizer/path/equivclass.c +++ b/src/backend/optimizer/path/equivclass.c @@ -1851,6 +1851,21 @@ create_join_clause(PlannerInfo *root, rightem->em_nullable_relids), ec->ec_min_security); + /* + * If either EM is a child, force the clause's clause_relids to include + * the relid(s) of the child rel. In normal cases it would already, but + * not if we are considering appendrel child relations with pseudoconstant + * translated variables (i.e., UNION ALL sub-selects with constant output + * items). We must do this so that join_clause_is_movable_into() will + * think that the clause should be evaluated at the correct place. + */ + if (leftem->em_is_child) + rinfo->clause_relids = bms_add_members(rinfo->clause_relids, + leftem->em_relids); + if (rightem->em_is_child) + rinfo->clause_relids = bms_add_members(rinfo->clause_relids, + rightem->em_relids); + /* Mark the clause as redundant, or not */ rinfo->parent_ec = parent_ec; |