- correct the commit from ref #3582 to refer to the correct sub-element

diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 5def7044428a1330e8414a7f096a64cd7efd59ab..676e45a24c74528937dc58461b0e3ae8762ebd5c 100644 (file)
--- 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)