From 34a1de41f654f92b61b2d78725b0b86c41c24bf3 Mon Sep 17 00:00:00 2001 From: root Date: Tue, 1 Dec 2020 05:42:45 -0500 Subject: [PATCH] Avoid using lcons and list_delete_first --- src/backend/optimizer/prep/prepunion.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 745f443..28bb96a 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -886,9 +886,9 @@ plan_union_children(PlannerInfo *root, while (pending_rels != NIL) { - Node *setOp = linitial(pending_rels); + Node *setOp = llast(pending_rels); - pending_rels = list_delete_first(pending_rels); + pending_rels = list_delete_last(pending_rels); if (IsA(setOp, SetOperationStmt)) { @@ -899,8 +899,8 @@ plan_union_children(PlannerInfo *root, equal(op->colTypes, top_union->colTypes)) { /* Same UNION, so fold children into parent */ - pending_rels = lcons(op->rarg, pending_rels); - pending_rels = lcons(op->larg, pending_rels); + pending_rels = lappend(pending_rels, op->rarg); + pending_rels = lappend(pending_rels, op->larg); continue; } } -- 1.8.3.1