diff --git a/src/sql/resolver/expr/ob_raw_expr.cpp b/src/sql/resolver/expr/ob_raw_expr.cpp
index 9068aab4dd..b0fa9142e5 100644
--- a/src/sql/resolver/expr/ob_raw_expr.cpp
+++ b/src/sql/resolver/expr/ob_raw_expr.cpp
@@ -398,7 +398,9 @@ int ObRawExpr::deduce_type(const ObSQLSessionInfo *session_info,
   ObRawExprDeduceType expr_deducer(session_info, solidify_session_vars, local_vars, local_var_id);
   expr_deducer.set_expr_factory(expr_factory_);
   if (OB_FAIL(expr_deducer.deduce(*this))) {
-    if (session_info->is_varparams_sql_prepare()) {
+    if (session_info->is_varparams_sql_prepare() &&
+        OB_ERR_INVALID_COLUMN_NUM != ret &&
+        OB_ERR_TOO_MANY_VALUES != ret) {
       ret = OB_SUCCESS;
       LOG_TRACE("ps prepare phase ignores type deduce error");
     } else {
diff --git a/src/sql/rewrite/ob_transform_aggr_subquery.cpp b/src/sql/rewrite/ob_transform_aggr_subquery.cpp
index 339f93f2db..7fb27a4fce 100644
--- a/src/sql/rewrite/ob_transform_aggr_subquery.cpp
+++ b/src/sql/rewrite/ob_transform_aggr_subquery.cpp
@@ -1301,8 +1301,8 @@ int ObTransformAggrSubquery::get_trans_param(ObDMLStmt &stmt,
     }
   } else if (stmt.is_update_stmt()) {
     ObUpdateStmt &upd_stmt = static_cast<ObUpdateStmt &>(stmt);
-    if (OB_FAIL(upd_stmt.get_assign_values(pre_group_by_exprs, true))) {
-      LOG_WARN("failed to get assign values", K(ret));
+    if (OB_FAIL(ObTransformUtils::get_post_join_exprs(&stmt, pre_group_by_exprs, true))) {
+      LOG_WARN("failed to get post join exprs", K(ret));
     }
   }
   int64_t pre_count = pre_group_by_exprs.count();