CloneFkReferenced-fix.patch

diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 8e26053a5c..2ad30c8452 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -8319,8 +8317,8 @@ CloneFkReferenced(Relation parentRel, Relation partitionRel,
 	{
 		Form_pg_constraint constrForm = (Form_pg_constraint) GETSTRUCT(tuple);
 
-		/* ignore this constraint if the parent is already on the list */
-		if (list_member_oid(clone, constrForm->conparentid))
+		/* Only try to clone the top-level constraint; skip child ones. */
+		if (constrForm->conparentid != InvalidOid)
 			continue;
 
 		clone = lappend_oid(clone, constrForm->oid);
@@ -8348,13 +8346,6 @@ CloneFkReferenced(Relation parentRel, Relation partitionRel,
 			elog(ERROR, "cache lookup failed for constraint %u", constrOid);
 		constrForm = (Form_pg_constraint) GETSTRUCT(tuple);
 
-		/* skip children whose parents are going to be cloned, as above */
-		if (list_member_oid(clone, constrForm->conparentid))
-		{
-			ReleaseSysCache(tuple);
-			continue;
-		}
-
 		/*
 		 * Because we're only expanding the key space at the referenced side,
 		 * we don't need to prevent any operation in the referencing table, so