diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/optimizer/plan/planner.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/backend/optimizer/plan/planner.c b/src/backend/optimizer/plan/planner.c index eadc04222ef..401299e5420 100644 --- a/src/backend/optimizer/plan/planner.c +++ b/src/backend/optimizer/plan/planner.c @@ -3124,6 +3124,14 @@ remove_useless_groupby_columns(PlannerInfo *root) if (rte->rtekind != RTE_RELATION) continue; + /* + * We must skip inheritance parent tables as some of the child rels + * may cause duplicate rows. This cannot happen with partitioned + * tables, however. + */ + if (rte->inh && rte->relkind != RELKIND_PARTITIONED_TABLE) + continue; + /* Nothing to do unless this rel has multiple Vars in GROUP BY */ relattnos = groupbyattnos[relid]; if (bms_membership(relattnos) != BMS_MULTIPLE) |