maintain the ordering of the given collection of columns when reducing so that primar...

ordered the same as in the mapped table

diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 93998c9a91ac0c70d6c9de4469a5fd7c19ce872f..34397f261c4c4d03dd60a00b13e64f476c736c68 100644 (file)
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -67,7 +67,7 @@ def reduce_columns(columns, *clauses):
     
     """
     
-    columns = util.Set(columns)
+    columns = util.OrderedSet(columns)
     
     omit = util.Set()
     for col in columns: