1 files changed, 2 insertions, 0 deletions
diff --git a/sql/item_sum.h b/sql/item_sum.h
index f58fa0b9688..01583d32f45 100644
--- a/sql/item_sum.h
+++ b/sql/item_sum.h
@@ -1563,6 +1563,8 @@ public:
 
   void clear();
   bool add();
+  bool supports_removal() const;
+  void remove();
   void reset_field() {};
   void update_field() {};
   void cleanup();