Return one or zero results, or raise an exception for multiple rows. Equivalent to :meth:`_query.Query.one_or_none`.
(self)
| 461 | return self._iter().one() |
| 462 | |
| 463 | def one_or_none(self): |
| 464 | """Return one or zero results, or raise an exception for multiple |
| 465 | rows. |
| 466 | |
| 467 | Equivalent to :meth:`_query.Query.one_or_none`. |
| 468 | |
| 469 | """ |
| 470 | return self._iter().one_or_none() |
| 471 | |
| 472 | def all(self): |
| 473 | """Return all rows. |