diff options
Diffstat (limited to 'lib/sqlalchemy/sql/util.py')
| -rw-r--r-- | lib/sqlalchemy/sql/util.py | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py index 1bea97318..55c17a193 100644 --- a/lib/sqlalchemy/sql/util.py +++ b/lib/sqlalchemy/sql/util.py @@ -401,7 +401,12 @@ def surface_selectables_only(clause): elif isinstance(elem, FromGrouping): stack.append(elem.element) elif isinstance(elem, ColumnClause): - stack.append(elem.table) + if elem.table is not None: + stack.append(elem.table) + else: + yield elem + elif elem is not None: + yield elem def extract_first_column_annotation(column, annotation_name): |