如何使用go pg查询一对多关系

我想查询一对多关系。我有以下结构:

type AppointmentsParticipants struct {
    AppointmentsID int `sql:",pk"`
    UserID int `sql:",pk"`
    Approved bool
    ReviewedAt time.Time
    ReviewedBy int
    Comment string
    Cancelled bool

}

type Appointments struct {
    ID int `sql:",pk"`
    Pending bool
    StartTime time.Time
    EndTime time.Time
    auditData
    InitialAppointmentID int
    SessionID string
    Type string
    AppointmentParticipants []*AppointmentsParticipants `json:"participants"`
}

var app Appointments
err = database.DB().
        Model(&app).
        Column("*").
        Where("appointments_participants.user_id = ?", id).
        Join("JOIN appointments_participants ON appointments.id = appointments_participants.appointments_id").
        Select()

这将返回Appoints结构的所有值,AppointmentParticipants切片除外。它返回一个空切片。我接受了go pg编写的查询,并在psql中验证了它确实从appointment_参与者表返回了一条记录。

{140 true 2018-09-01 00:00:00 +0000 UTC 2018-09-01 01:00:00 +0000 UTC {2018-08-15 22:52:11.326775 +0000 UTC 5 0001-01-01 00:00:00 +0000 UTC 0} 0 Session []}

有趣的是,此查询确实返回了一个错误: pg: can't find column=appointments_id in model=Appointments 但是,我尝试使用struct标记来尝试并解决这个问题,但没有效果。