From bcd6006ceda177abb4a38c3de4fad259dc758259 Mon Sep 17 00:00:00 2001
From: nnuanyang <zhaoxl@vastdata.com.cn>
Date: Mon, 18 Dec 2023 04:48:51 -0800
Subject: [PATCH] fixed 527f5a2 from
 https://gitee.com/totaj/openGauss-server/pulls/4648 WITH RECURSIVE bug

---
 src/common/backend/nodes/nodeFuncs.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/common/backend/nodes/nodeFuncs.cpp b/src/common/backend/nodes/nodeFuncs.cpp
index e50e5aeaf..f9ee2aaf5 100644
--- a/src/common/backend/nodes/nodeFuncs.cpp
+++ b/src/common/backend/nodes/nodeFuncs.cpp
@@ -3420,6 +3420,9 @@ bool raw_expression_tree_walker(Node* node, bool (*walker)(), void* context)
             return p2walker(((CommonTableExpr*)node)->ctequery, context);
         case T_AutoIncrement:
             return p2walker(((AutoIncrement*)node)->expr, context);
+        case T_UserVar:
+            /* @var do not need recursion */
+            break;
         default:
             ereport(ERROR,
                 (errcode(ERRCODE_UNRECOGNIZED_NODE_TYPE), errmsg("unrecognized node type: %d", (int)nodeTag(node))));