无法使用Leftjoin从2个表中获取所有数据

Question

我无法从查询中获取所有列，我只获得了1个表的结果，我还期望有其他表，这里我有2个表a）registration_types和b）packages。我得到了registration_types的结果，但是没有得到包表

   return await createQueryBuilder("registration_types")
            .leftJoinAndSelect("packages", "pk", "pk.registration_type_id = registration_types.id")
            .getMany();

我得到了结果，但不是所有的列

Answer 1

嘿，您应该尝试以下查询：

return await createQueryBuilder("registration_types")
    .leftJoinAndSelect("registration_types.packages", Package, "pk", "pk.registration_type_id = registration_types.id")
    .getMany();

OR

return await createQueryBuilder("registration_types")
    .leftJoinAndMapMany("registration_types.packages", Package, "pk", "pk.registration_type_id = registration_types.id")
    .getMany();

Answer 2

嘿，您应该尝试以下查询：

return await getManager().createQueryBuilder(registrationTypesEntity, "registration_types")
    .leftJoinAndSelect("registration_types.packages", PackageEntity, "pk", "pk.registration_type_id = registration_types.id")
    .getMany();

OR：

return await getManager().createQueryBuilder(registrationTypesEntity, "registration_types")
    .leftJoinAndSelect("registration_types.packages")
    .getMany();