From 618ad9980b7561b30e37caa5d9788d1619788292 Mon Sep 17 00:00:00 2001
From: yinyj17 <yinyijun92@gmail.com>
Date: Mon, 14 Aug 2023 02:12:34 +0000
Subject: [PATCH] fix expr concat upgrade compatibility bug

---
 src/sql/engine/expr/ob_expr_concat.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sql/engine/expr/ob_expr_concat.cpp b/src/sql/engine/expr/ob_expr_concat.cpp
index c07776eeef..cd979527a5 100644
--- a/src/sql/engine/expr/ob_expr_concat.cpp
+++ b/src/sql/engine/expr/ob_expr_concat.cpp
@@ -224,7 +224,7 @@ int ObExprConcat::calc_result_typeN(ObExprResType &type,
         has_text = true;
       }
     }
-    if (has_text) {
+    if (has_text && GET_MIN_CLUSTER_VERSION() >= CLUSTER_VERSION_4_2_0_0) {
       type.set_type(ObLongTextType);
     } else {
       type.set_varchar();