From fea0fb2c8b171f19b234c811609854aaf535037f Mon Sep 17 00:00:00 2001
From: "igor@rurik.mysql.com" <>
Date: Sun, 31 Jul 2005 02:32:33 -0700
Subject: [PATCH] Fixed bug #12095: a join query with GROUP_CONCAT over a
 single row table. If GROUP_CONCAT is calculated we always put its argument
 into a temp table, even when the argument is a constant item.

---
 sql/item_sum.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 6ca3f024f61..1ee48dfb763 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -1986,6 +1986,7 @@ bool Item_func_group_concat::setup(THD *thd)
   }
   
   count_field_types(tmp_table_param,all_fields,0);
+  tmp_table_param->need_const= 1;
   if (table)
   {
     /*