存储过程始终返回1

Question

我一直在与这个战斗至少两个小时，因为我对MSSql的了解非常有限，想要求帮助：

val action: DBIO[Seq[Int]] = sql"""
  DECLARE @id int;
  EXEC AdsContent.TemplatesCreate
    @ID_ClientSites  = ${bannerElementTemplatesDto.idClientSites},
    @Title = ${bannerElementTemplatesDto.title},
    @FileName = ${bannerElementTemplatesDto.fileName},
    @Description1 = ${bannerElementTemplatesDto.description},
    @Description2 = ${bannerElementTemplatesDto.description},
    @DID_BannerElementStatus = ${bannerElementTemplatesDto.didBannerElementStatus},
    @TemplateVersion = ${bannerElementTemplatesDto.templateVersion},
    @ID_AgencyUsers  = ${bannerElementTemplatesDto.idAgencyUser},
    @IsReadOnly = ${bannerElementTemplatesDto.readOnly},
    @CanBeUsedInProductTargeting = ${bannerElementTemplatesDto.canBuUsedInProductionTargeting},
    @ID_OwnedBy = ${bannerElementTemplatesDto.ownedBy},
    @ID_CreatedBy = ${bannerElementTemplatesDto.createdById},
    @ID_BannerElementTemplates = @id OUTPUT;
  select @id as 'id'
  """.as[Int]

db.run(action).map { x =>
  x match {
    case Seq() => throw new SQLException("No id was returned from the when inserting template to DB")
    case Seq(a) => a
    case Seq(xs @ _*) => throw new SQLException(s"Multiple values were returned when inserting template to DB: $xs")
  }
}

这个编译它可以将数据插入到数据库中，但我无法获得生成的id。

id与@ID_BannerElementTemplates相关联，并以此方式设置过程：

SELECT @ID_BannerElementTemplates = SCOPE_IDENTITY()

我总是得到1。