diff options
Diffstat (limited to 'src/backend/optimizer/path/allpaths.c')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 63f0f6b79c7..b23cc8ee82d 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -554,12 +554,11 @@ set_rel_pathlist(PlannerInfo *root, RelOptInfo *rel, * its own pool of workers. Instead, we'll consider gathering partial * paths for the parent appendrel. * - * Also, if this is the topmost scan/join rel (that is, the only baserel), - * we postpone gathering until the final scan/join targetlist is available - * (see grouping_planner). + * Also, if this is the topmost scan/join rel, we postpone gathering until + * the final scan/join targetlist is available (see grouping_planner). */ if (rel->reloptkind == RELOPT_BASEREL && - bms_membership(root->all_baserels) != BMS_SINGLETON) + !bms_equal(rel->relids, root->all_baserels)) generate_useful_gather_paths(root, rel, false); /* Now find the cheapest of the paths for this rel */ @@ -3435,7 +3434,7 @@ standard_join_search(PlannerInfo *root, int levels_needed, List *initial_rels) * partial paths. We'll do the same for the topmost scan/join rel * once we know the final targetlist (see grouping_planner). */ - if (lev < levels_needed) + if (!bms_equal(rel->relids, root->all_baserels)) generate_useful_gather_paths(root, rel, false); /* Find and save the cheapest paths for this rel */ |