1 files changed, 1 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 90f5e11dd16..f27f1024e73 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -2176,6 +2176,7 @@ setup_subq_exit:
     choose_tableless_subquery_plan();
     if (select_lex->have_window_funcs())
     {
+      calc_group_buffer(this, group_list);
       if (!(join_tab= (JOIN_TAB*) thd->alloc(sizeof(JOIN_TAB))))
         DBUG_RETURN(1);
       need_tmp= 1;