Merge mysql.com:/home/gluh/MySQL/Merge/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt


mysql-test/r/order_by.result:
  Auto merged
mysql-test/t/order_by.test:
  Auto merged
sql/item.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
mysql-test/r/join.result:
  manual merge
mysql-test/t/join.test:
  manual merge

1 files changed, 13 insertions, 0 deletions

diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 8303ef54c23..75e019ccb63 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -3801,6 +3801,19 @@ find_field_in_natural_join(THD *thd, TABLE_LIST *table_ref, const char *name,
       column reference. See create_view_field() for details.
     */
     item= nj_col->create_item(thd);
+    /*
+     *ref != NULL means that *ref contains the item that we need to
+     replace. If the item was aliased by the user, set the alias to
+     the replacing item.
+     We need to set alias on both ref itself and on ref real item.
+     */
+    if (*ref && !(*ref)->is_autogenerated_name)
+    {
+      item->set_name((*ref)->name, (*ref)->name_length,
+                     system_charset_info);
+      item->real_item()->set_name((*ref)->name, (*ref)->name_length,
+                                  system_charset_info);
+    }
     if (register_tree_change && arena)
       thd->restore_active_arena(arena, &backup);