1 files changed, 11 insertions, 1 deletions
diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 8813324262c..b20a6892ce2 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -123,7 +123,17 @@ public:
     delete [] comparators;
     comparators= 0;
   }
-
+  /*
+    Set correct cmp_context if items would be compared as INTs.
+  */
+  inline void set_cmp_context_for_datetime()
+  {
+    DBUG_ASSERT(func == &Arg_comparator::compare_datetime);
+    if ((*a)->result_as_longlong())
+      (*a)->cmp_context= INT_RESULT;
+    if ((*b)->result_as_longlong())
+      (*b)->cmp_context= INT_RESULT;
+  }
   friend class Item_func;
 };