From c12b48b62e4f94a651eec634ca74a028e4b3d760 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Mon, 29 May 2006 02:57:33 +0000
Subject: connection more careful about checking if its closed before
 operations small fix to table sort if no tables unit test tweaks

---
 lib/sqlalchemy/sql_util.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/sqlalchemy/sql_util.py')

diff --git a/lib/sqlalchemy/sql_util.py b/lib/sqlalchemy/sql_util.py
index e3170ebce..0728bba47 100644
--- a/lib/sqlalchemy/sql_util.py
+++ b/lib/sqlalchemy/sql_util.py
@@ -27,7 +27,8 @@ class TableCollection(object):
             seq.append( node.item )
             for child in node.children:
                 to_sequence( child )
-        to_sequence( head )
+        if head is not None:
+            to_sequence( head )
         if reverse:
             sequence.reverse()
         return sequence
-- 
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