From 4e8a5b253ec6ef1dd69312c8f34a4cd38cd39a49 Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Tue, 29 Aug 2023 15:10:49 +0000
Subject: [PATCH] fix defensive check bug in WinMagic transform rule

---
 src/sql/rewrite/ob_transform_win_magic.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/sql/rewrite/ob_transform_win_magic.cpp b/src/sql/rewrite/ob_transform_win_magic.cpp
index 90f8a4f9f9..649054aec2 100644
--- a/src/sql/rewrite/ob_transform_win_magic.cpp
+++ b/src/sql/rewrite/ob_transform_win_magic.cpp
@@ -1834,11 +1834,8 @@ int ObTransformWinMagic::check_join_push_down(ObDMLStmt *main_stmt,
                 expr->get_relation_ids().has_member(view_table_idx) &&
                 expr->get_relation_ids().has_member(push_down_table_idx)) {
         ObSEArray<ObRawExpr *, 4> column_exprs;
-        if (!expr->is_op_expr()) {
+        if (!expr->is_op_expr() || expr->get_param_count() < 2) {
           //do nothing
-        } else if (expr->get_param_count() < 2) {
-          ret = OB_ERR_UNEXPECTED;
-          LOG_WARN("equal expr param count is less than 2", K(ret));
         } else if (OB_ISNULL(expr->get_param_expr(0)) ||
                   OB_ISNULL(expr->get_param_expr(1))) {
           ret = OB_ERR_UNEXPECTED;