diff options
Diffstat (limited to 'lib/sqlalchemy/sql')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index 81c9d3936..8f611c05e 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -880,7 +880,10 @@ def _compound_select(keyword, *selects, **kwargs): return CompoundSelect(keyword, *selects, **kwargs) def _is_literal(element): - return not isinstance(element, (ClauseElement, Operators)) + global schema + if not schema: + from sqlalchemy import schema + return not isinstance(element, (ClauseElement, Operators, schema.SchemaItem)) def _from_objects(*elements, **kwargs): return itertools.chain(*[element._get_from_objects(**kwargs) for element in elements]) |