diff --git a/sql/sql_select.cc b/sql/sql_select.cc index e112aa9ae5e..7b49f378223 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -15158,6 +15158,17 @@ find_order_in_list(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables, uint el= all_fields.elements; all_fields.push_front(order_item); /* Add new field to field list. */ ref_pointer_array[el]= order_item; + /* + If the order_item is a SUM_FUNC_ITEM, when fix_fields is called + ref_by is set to order->item which is the address of order_item. + But this needs to be address of order_item in the all_fields list. + As a result, when it gets replaced with Item_aggregate_ref + object in Item::split_sum_func2, we will be able to retrieve the + newly created object. + */ + if (order_item->type() == Item::SUM_FUNC_ITEM) + ((Item_sum *)order_item)->ref_by= all_fields.head_ref(); + order->item= ref_pointer_array + el; return FALSE; }