From 56df115668d16ef90af455dff156d9f9114c66f5 Mon Sep 17 00:00:00 2001
From: Colm McHugh <colm.mchugh@gmail.com>
Date: Thu, 16 Jan 2025 18:17:20 +0000
Subject: [PATCH] Potential fix for issues #7782, #7783

---
 .../distributed/planner/distributed_planner.c    | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/backend/distributed/planner/distributed_planner.c b/src/backend/distributed/planner/distributed_planner.c
index 0ec3883da..21af214fd 100644
--- a/src/backend/distributed/planner/distributed_planner.c
+++ b/src/backend/distributed/planner/distributed_planner.c
@@ -272,6 +272,22 @@ distributed_planner(Query *parse,
 			planContext.plan = standard_planner(planContext.query, NULL,
 												planContext.cursorOptions,
 												planContext.boundParams);
+
+			if (needsDistributedPlanning)
+			{
+				List *rtesPostPlan = ExtractRangeTableEntryList(planContext.query);
+				if (list_length(rtesPostPlan) < list_length(rangeTableList))
+				{
+					bool fDistributedTable = false;
+
+					/* range table entries have been reduced by planner, possibly by constant folding. */
+					needsDistributedPlanning = ListContainsDistributedTableRTE(
+						rtesPostPlan,
+						&
+						fDistributedTable);
+				}
+			}
+
 			if (needsDistributedPlanning)
 			{
 				result = PlanDistributedStmt(&planContext, rteIdCounter);