diff --git a/src/pl/ob_pl_resolver.cpp b/src/pl/ob_pl_resolver.cpp
index afcded1a0..c5b720629 100644
--- a/src/pl/ob_pl_resolver.cpp
+++ b/src/pl/ob_pl_resolver.cpp
@@ -13951,8 +13951,7 @@ int ObPLResolver::resolve_sys_func_access(ObObjAccessIdent &access_ident,
     }
     if (OB_FAIL(ret)) {
     } else if (!access_ident.sys_func_expr_->get_result_type().is_xml_sql_type()
-                && !(access_ident.sys_func_expr_->get_result_type().is_ext()
-                     && access_ident.sys_func_expr_->get_result_type().get_udt_id() == T_OBJ_XML)) {
+                && !(access_ident.sys_func_expr_->get_result_type().is_ext())) {
       ret = OB_ERR_NOT_OBJ_REF;
       LOG_WARN("unsupported sys func ident",
         K(ret), K(access_ident), K(access_ident.sys_func_expr_->get_result_type()),
diff --git a/src/sql/resolver/dml/ob_dml_resolver.cpp b/src/sql/resolver/dml/ob_dml_resolver.cpp
index 9cbfc536e..37be0c3ca 100755
--- a/src/sql/resolver/dml/ob_dml_resolver.cpp
+++ b/src/sql/resolver/dml/ob_dml_resolver.cpp
@@ -1407,7 +1407,7 @@ int ObDMLResolver::check_column_udt_type(ParseNode *root_node)
         if (OB_ISNULL(col_expr)) {
           ret = OB_ERR_BAD_FIELD_ERROR;
           LOG_WARN("get invalid identifier name", K(ret), K(tab_str), K(col_str), K(tab_has_alias));
-        } else if (!col_expr->get_result_type().is_user_defined_sql_type()) {
+        } else if (!col_expr->get_result_type().is_user_defined_sql_type() && !col_expr->get_result_type().is_ext()) {
           ret = OB_ERR_NOT_OBJ_REF;
         }
       }