From 3370cbde509b3e230c46a503956f11f78df74b88 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Wed, 11 Nov 2015 14:21:02 -0500
Subject: [PATCH] - correct the commit from ref #3582 to refer to the correct
 sub-element

---
 lib/sqlalchemy/sql/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 5def704442..676e45a24c 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -213,7 +213,7 @@ def surface_column_elements(clause):
         elem = stack.popleft()
         yield elem
         for sub in elem.get_children():
-            if isinstance(elem, FromGrouping):
+            if isinstance(sub, FromGrouping):
                 continue
             stack.append(sub)
 
-- 
2.47.2