Method outerjoin

lib/sqlalchemy/orm/query.py:2477–2494

Create a left outer join against this ``Query`` object's criterion and apply generatively, returning the newly resulting ``Query``. Usage is the same as the ``join()`` method. .. seealso:: :meth:`_sql.Select.outerjoin` - v2 equivalent method.

(
        self,
        target: _JoinTargetArgument,
        onclause: Optional[_OnClauseArgument] = None,
        *,
        full: bool = False,
    )

        return self

    def outerjoin(
        self,
        target: _JoinTargetArgument,
        onclause: Optional[_OnClauseArgument] = None,
        *,
        full: bool = False,
    ) -> Self:
        """Create a left outer join against this ``Query`` object's criterion
        and apply generatively, returning the newly resulting ``Query``.

        Usage is the same as the ``join()`` method.

        .. seealso::

            :meth:`_sql.Select.outerjoin` - v2 equivalent method.

        """
        return self.join(target, onclause=onclause, isouter=True, full=full)

    @_generative
    @_assertions(_no_statement_condition)