diff options
Diffstat (limited to 'src/backend/optimizer/plan/analyzejoins.c')
| -rw-r--r-- | src/backend/optimizer/plan/analyzejoins.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/backend/optimizer/plan/analyzejoins.c b/src/backend/optimizer/plan/analyzejoins.c index 857f51c752c..4d42625e1d4 100644 --- a/src/backend/optimizer/plan/analyzejoins.c +++ b/src/backend/optimizer/plan/analyzejoins.c @@ -595,9 +595,9 @@ rel_supports_distinctness(PlannerInfo *root, RelOptInfo *rel) /* * For a plain relation, we only know how to prove uniqueness by * reference to unique indexes. Make sure there's at least one - * suitable unique index. It must be immediately enforced, and if - * it's a partial index, it must match the query. (Keep these - * conditions in sync with relation_has_unique_index_for!) + * suitable unique index. It must be immediately enforced, and not a + * partial index. (Keep these conditions in sync with + * relation_has_unique_index_for!) */ ListCell *lc; @@ -605,8 +605,7 @@ rel_supports_distinctness(PlannerInfo *root, RelOptInfo *rel) { IndexOptInfo *ind = (IndexOptInfo *) lfirst(lc); - if (ind->unique && ind->immediate && - (ind->indpred == NIL || ind->predOK)) + if (ind->unique && ind->immediate && ind->indpred == NIL) return true; } } |