From 7b1f8e9db94cb188fe2647adb11808e079aa13eb Mon Sep 17 00:00:00 2001
From: xianyu-w <707512433@qq.com>
Date: Thu, 13 Apr 2023 09:12:32 +0000
Subject: [PATCH] Fix a join elimination bug

---
 src/sql/rewrite/ob_transform_join_elimination.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/sql/rewrite/ob_transform_join_elimination.cpp b/src/sql/rewrite/ob_transform_join_elimination.cpp
index 8d352771f..cd2286b7c 100644
--- a/src/sql/rewrite/ob_transform_join_elimination.cpp
+++ b/src/sql/rewrite/ob_transform_join_elimination.cpp
@@ -582,6 +582,9 @@ int ObTransformJoinElimination::create_missing_select_items(ObSelectStmt *source
         LOG_WARN("failed to remove duplicated agg expr", K(ret));
       } else if (OB_FAIL(source_stmt->add_select_item(*miss_select_items.at(i)))) {
         LOG_WARN("failed to add select item", K(ret));
+      } else if (OB_FAIL(ObTransformUtils::extract_query_ref_expr(miss_select_items.at(i)->expr_,
+                                                                  source_stmt->get_subquery_exprs()))) {
+        LOG_WARN("failed to extract query ref exprs", K(ret));
       } else { /*do nothing*/ }
     }
   }