非外键关联查询

[JaylenCoder]

select_models返回的还是 驱动表的对象，不返回关联表

Originally posted by @JaylenCoder in #65

[YanJa]

我也遇到类似问题, 用非外界关联查询, 如何返回关联表数据:

` user_alias = aliased(user_dao.model, name="user")

    return await self.select_order(
        'created_at',
        'desc',
        load_strategies=["users"],
        join_conditions=[
            JoinConfig(
                model=user_alias,
                join_on=self.model.creator==user_alias.id,
                join_type='left'
            )
        ],
        **filters)`

这个只返回主查询表的数据, 想要返回关联表的数据