1 files changed, 5 insertions, 0 deletions
diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 6d81c7acc40..6cd7e0e3e78 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -260,6 +260,7 @@ public:
   bool is_null();
   longlong val_int();
   void cleanup();
+  enum Functype functype() const   { return IN_OPTIMIZER_FUNC; }
   const char *func_name() const { return "<in_optimizer>"; }
   Item_cache **get_cache() { return &cache; }
   void keep_top_level_cache();
@@ -277,6 +278,10 @@ public:
   void reset_cache() { cache= NULL; }
   virtual void print(String *str, enum_query_type query_type);
   void restore_first_argument();
+  Item* get_wrapped_in_subselect_item()
+  {
+    return args[1];
+  }
 };
 
 class Comp_creator