From cad553de49b1418c8d99652332dd62c706f65cc7 Mon Sep 17 00:00:00 2001
From: unknown <serg@serg.mysql.com>
Date: Wed, 12 Feb 2003 11:03:41 +0100
Subject: [PATCH] backported MERGE+MAX bugfix from 4.0

---
 sql/opt_sum.cc | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc
index b88cfb4e073..9385e993859 100644
--- a/sql/opt_sum.cc
+++ b/sql/opt_sum.cc
@@ -165,10 +165,9 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
 	    error=table->file->index_last(table->record[0]) !=0;
 	  else
 	  {
-	    (void) table->file->index_read(table->record[0], key_buff,
-					   ref.key_length,
-					   HA_READ_AFTER_KEY);
-	    error=table->file->index_prev(table->record[0]) ||
+           error = table->file->index_read(table->record[0], key_buff,
+                                          ref.key_length,
+                                         HA_READ_PREFIX_LAST) ||
 	      key_cmp(table,key_buff,ref.key,ref.key_length);
 	  }
 	  if (table->key_read)