diff options
Diffstat (limited to 'src/backend/optimizer/path/equivclass.c')
| -rw-r--r-- | src/backend/optimizer/path/equivclass.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/equivclass.c b/src/backend/optimizer/path/equivclass.c index 130f482eb62..a0a4699c813 100644 --- a/src/backend/optimizer/path/equivclass.c +++ b/src/backend/optimizer/path/equivclass.c @@ -800,7 +800,8 @@ find_em_expr_for_rel(EquivalenceClass *ec, RelOptInfo *rel) * applied in prepare_sort_from_pathkeys. */ Expr * -find_em_expr_usable_for_sorting_rel(EquivalenceClass *ec, RelOptInfo *rel) +find_em_expr_usable_for_sorting_rel(PlannerInfo *root, EquivalenceClass *ec, + RelOptInfo *rel, bool require_parallel_safe) { ListCell *lc_em; @@ -831,6 +832,12 @@ find_em_expr_usable_for_sorting_rel(EquivalenceClass *ec, RelOptInfo *rel) continue; /* + * If requested, reject expressions that are not parallel-safe. + */ + if (require_parallel_safe && !is_parallel_safe(root, (Node *) em_expr)) + continue; + + /* * As long as the expression isn't volatile then * prepare_sort_from_pathkeys is able to generate a new target entry, * so there's no need to verify that one already exists. |