1 files changed, 8 insertions, 0 deletions
diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h
index 4832ddbd1b1..04009fe10e1 100644
--- a/sql/item_strfunc.h
+++ b/sql/item_strfunc.h
@@ -425,6 +425,14 @@ public:
     return item->walk(processor, arg) ||
       Item_str_func::walk(processor, arg);
   }
+  Item *transform(Item_transformer transformer, byte *arg)
+  {
+    Item *new_item= item->transform(transformer, arg);
+    if (!new_item)
+      return 0;
+    item= new_item;
+    return Item_str_func::transform(transformer, arg);
+  }
   void print(String *str);
 };