diff options
| -rw-r--r-- | lib/sqlalchemy/sql/base.py | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/lib/sqlalchemy/sql/base.py b/lib/sqlalchemy/sql/base.py index 48b9a8a2b..97fb04dd9 100644 --- a/lib/sqlalchemy/sql/base.py +++ b/lib/sqlalchemy/sql/base.py @@ -579,8 +579,7 @@ class ColumnCollection(util.OrderedProperties): object.__setattr__(self, '_all_columns', state['_all_columns']) def contains_column(self, col): - existing = self._data.get(col.key) - return existing is not None and hash(existing) == hash(col) + return col in set(self._all_columns) def as_immutable(self): return ImmutableColumnCollection(self._data, self._all_columns) |