diff options
Diffstat (limited to 'src/backend/statistics/dependencies.c')
| -rw-r--r-- | src/backend/statistics/dependencies.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/statistics/dependencies.c b/src/backend/statistics/dependencies.c index 8bf80db8e4d..a41bace75ab 100644 --- a/src/backend/statistics/dependencies.c +++ b/src/backend/statistics/dependencies.c @@ -24,6 +24,7 @@ #include "nodes/pathnodes.h" #include "optimizer/clauses.h" #include "optimizer/optimizer.h" +#include "parser/parsetree.h" #include "statistics/extended_stats_internal.h" #include "statistics/statistics.h" #include "utils/bytea.h" @@ -1410,11 +1411,19 @@ dependencies_clauselist_selectivity(PlannerInfo *root, int ndependencies; int i; AttrNumber attnum_offset; + RangeTblEntry *rte = planner_rt_fetch(rel->relid, root); /* unique expressions */ Node **unique_exprs; int unique_exprs_cnt; + /* + * 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_DEPENDENCIES)) return 1.0; |