merge with 4.1

1 files changed, 4 insertions, 0 deletions

diff --git a/sql/item_subselect.h b/sql/item_subselect.h
index 4a325c4b224..6efb9052115 100644
--- a/sql/item_subselect.h
+++ b/sql/item_subselect.h
@@ -291,6 +291,7 @@ public:
   static table_map calc_const_tables(TABLE_LIST *);
   virtual void print(String *str)= 0;
   virtual int change_item(Item_subselect *si, select_subselect *result)= 0;
+  virtual bool no_tables()= 0;
 };
 
 
@@ -315,6 +316,7 @@ public:
   table_map upper_select_const_tables();
   void print (String *str);
   int change_item(Item_subselect *si, select_subselect *result);
+  bool no_tables();
 };
 
 
@@ -335,6 +337,7 @@ public:
   table_map upper_select_const_tables();
   void print (String *str);
   int change_item(Item_subselect *si, select_subselect *result);
+  bool no_tables();
 };
 
 
@@ -364,6 +367,7 @@ public:
   table_map upper_select_const_tables() { return 0; }
   void print (String *str);
   int change_item(Item_subselect *si, select_subselect *result);
+  bool no_tables();
 };