diff options
Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
| -rw-r--r-- | src/backend/optimizer/prep/prepunion.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 944afc7192b..afcb5c0f0f0 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -244,6 +244,7 @@ recurse_set_operations(Node *setOp, PlannerInfo *root, { RangeTblRef *rtr = (RangeTblRef *) setOp; RangeTblEntry *rte = root->simple_rte_array[rtr->rtindex]; + SetOperationStmt *setops; Query *subquery = rte->subquery; PlannerInfo *subroot; List *tlist; @@ -257,11 +258,16 @@ recurse_set_operations(Node *setOp, PlannerInfo *root, /* plan_params should not be in use in current query level */ Assert(root->plan_params == NIL); + /* + * Pass the set operation details to the subquery_planner to have it + * consider generating Paths correctly ordered for the set operation. + */ + setops = castNode(SetOperationStmt, root->parse->setOperations); + /* Generate a subroot and Paths for the subquery */ - subroot = rel->subroot = subquery_planner(root->glob, subquery, - root, - false, - root->tuple_fraction); + subroot = rel->subroot = subquery_planner(root->glob, subquery, root, + false, root->tuple_fraction, + setops); /* * It should not be possible for the primitive query to contain any |