fix core caused by alias_column_expr in aggr for win func and Swallow error code

src/sql/optimizer/ob_log_plan.cpp

@@ -3405,6 +3405,7 @@ int ObLogPlan::generate_subplan_for_query_ref(ObQueryRefRawExpr* query_ref)
       ObArray<std::pair<int64_t, ObRawExpr*>> exec_params;
       ObLogPlan* logical_plan = NULL;
       if (OB_ISNULL(logical_plan = opt_ctx.get_log_plan_factory().create(opt_ctx, *subquery))) {
+        ret = OB_ALLOCATE_MEMORY_FAILED;
         LOG_WARN("failed to create plan", K(ret), K(subquery->get_sql_stmt()));
       } else if (OB_FAIL(logical_plan->init_plan_info())) {
         LOG_WARN("failed to init equal sets", K(ret));

src/sql/resolver/dml/ob_select_resolver.cpp

@@ -4834,8 +4834,14 @@ inline bool ObSelectResolver::column_need_check_group_by(const ObQualifiedName&
 int ObSelectResolver::wrap_alias_column_ref(const ObQualifiedName& q_name, ObRawExpr*& real_ref_expr)
 {
   int ret = OB_SUCCESS;
-  if (q_name.parent_aggr_level_ >= 0 && current_level_ <= q_name.parent_aggr_level_) {
-    ObAliasRefRawExpr* alias_expr = NULL;
+  // aggr in window function isn't used to wrap column ref, just only expand alias column, and do
+  // wrap alias column ref is used to help analyze aggregate pullup for alias column in aggr. the
+  // other situation should expand alias column directly.
+  // eg: select sum(t1.c1) from t1 order by (select sum(t1.c1) from t2);
+  // sum(t1.c1) in subquery is from parent stmt.
+  if (!q_name.parents_expr_info_.has_member(IS_WINDOW_FUNC) && q_name.parent_aggr_level_ >= 0 &&
+      current_level_ <= q_name.parent_aggr_level_) {
+    ObAliasRefRawExpr *alias_expr = NULL;
     if (OB_FAIL(ObRawExprUtils::build_alias_column_expr(
             *params_.expr_factory_, real_ref_expr, current_level_, alias_expr))) {
       LOG_WARN("build alias column expr failed", K(ret));