Method _fallback_column_name

lib/sqlalchemy/sql/compiler.py:2603–2606

(self, column)

            )

    def _fallback_column_name(self, column):
        raise exc.CompileError(
            "Cannot compile Column object until its 'name' is assigned."
        )

    def visit_lambda_element(self, element, **kw):
        sql_element = element._resolved