bk commit into 5.0 tree (igor:1.2027)

[igor]

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ChangeSet
  1.2027 06/02/02 13:47:21 igor@stripped +1 -0
  Merge rurik.mysql.com:/home/igor/mysql-5.0
  into  rurik.mysql.com:/home/igor/dev/mysql-5.0-0

  sql/sql_select.cc
    1.391 06/02/02 13:47:15 igor@stripped +0 -0
    Auto merged

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	igor
# Host:	rurik.mysql.com
# Root:	/home/igor/dev/mysql-5.0-0/RESYNC

--- 1.390/sql/sql_select.cc	2006-02-01 20:43:37 -08:00
+++ 1.391/sql/sql_select.cc	2006-02-02 13:47:15 -08:00
@@ -6016,6 +6016,20 @@
       problems in free_elements() as some of the elements are then deleted.
     */
     tmp_table_param.copy_funcs.empty();
+    /*
+      If we have tmp_join and 'this' JOIN is not tmp_join and
+      tmp_table_param.copy_field's  of them are equal then we have to remove
+      pointer to  tmp_table_param.copy_field from tmp_join, because it qill
+      be removed in tmp_table_param.cleanup().
+    */
+    if (tmp_join &&
+        tmp_join != this &&
+        tmp_join->tmp_table_param.copy_field ==
+        tmp_table_param.copy_field)
+    {
+      tmp_join->tmp_table_param.copy_field=
+        tmp_join->tmp_table_param.save_copy_field= 0;
+    }
     tmp_table_param.cleanup();
   }
   DBUG_VOID_RETURN;