SCRUM

additions about DEFAULT in UPDATE and SELECT

sql/item.cc

@@ -1150,6 +1150,12 @@ bool Item_default_value::fix_fields(THD *thd, struct st_table_list *table_list,
   return 0;
 }
 
+void Item_default_value::print(String *str)
+{
+  str->append("default(");
+  arg->print(str);
+  str->append(')');
+}
 
 /*
   If item is a const function, calculate it and return a const item

sql/item.h

@@ -674,6 +674,12 @@ public:
   enum Type type() const { return DEFAULT_VALUE_ITEM; }
   bool eq(const Item *item, bool binary_cmp) const;
   bool fix_fields(THD *, struct st_table_list *, Item **);
+  bool check_loop(uint id)
+  {
+    return Item_field::check_loop(id) || arg->check_loop(id);
+  }
+  void set_outer_resolving() { arg->set_outer_resolving(); }
+  void print(String *str);
 };
 
 class Item_cache: public Item