diff options
Diffstat (limited to 'src/backend/statistics/extended_stats.c')
| -rw-r--r-- | src/backend/statistics/extended_stats.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/statistics/extended_stats.c b/src/backend/statistics/extended_stats.c index e0aece6b51d..6593eb6c2de 100644 --- a/src/backend/statistics/extended_stats.c +++ b/src/backend/statistics/extended_stats.c @@ -28,6 +28,7 @@ #include "nodes/nodeFuncs.h" #include "optimizer/clauses.h" #include "optimizer/optimizer.h" +#include "parser/parsetree.h" #include "postmaster/autovacuum.h" #include "statistics/extended_stats_internal.h" #include "statistics/statistics.h" @@ -1075,6 +1076,14 @@ statext_mcv_clauselist_selectivity(PlannerInfo *root, List *clauses, int varReli mcv_totalsel, other_sel, sel; + RangeTblEntry *rte = planner_rt_fetch(rel->relid, root); + + /* + * When dealing with inheritance trees, ignore extended stats (which were + * built without data from child rels, and thus do not represent them). + */ + if (rte->inh) + return 1.0; /* check if there's any stats that might be useful for us. */ if (!has_stats_of_kind(rel->statlist, STATS_EXT_MCV)) |