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Diffstat (limited to 'lib/sqlalchemy/sql_util.py')
| -rw-r--r-- | lib/sqlalchemy/sql_util.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql_util.py b/lib/sqlalchemy/sql_util.py index e3170ebce..0728bba47 100644 --- a/lib/sqlalchemy/sql_util.py +++ b/lib/sqlalchemy/sql_util.py @@ -27,7 +27,8 @@ class TableCollection(object): seq.append( node.item ) for child in node.children: to_sequence( child ) - to_sequence( head ) + if head is not None: + to_sequence( head ) if reverse: sequence.reverse() return sequence |