diff -r bc69eca59041 -r 203be9022b46 pgtoolkit/pgdatadiff.py
--- a/pgtoolkit/pgdatadiff.py	Fri Aug 19 17:08:34 2011 +0200
+++ b/pgtoolkit/pgdatadiff.py	Tue Sep 06 17:55:15 2011 +0200
@@ -190,7 +190,7 @@
 
     def _select(self):
         browser = pgbrowser.PgBrowser(self.conn1)
-        columns = browser.list_columns(schema=self.schema1, table=self.table1)
+        columns = browser.list_columns(schema=self.schema1, table=self.table1, order=1)
         columns_sel = ', '.join(['"' + x['name'] + '"' for x in columns])
         self.colnames = [x['name'] for x in columns]