use [msdb]
set nocount on
begin tran
declare @SubPlanName varchar(200)
--计划名称从Sqlserver 代理->作业查看，
--例如：BakUserDB.子计划，那该值就是“子计划”，赋值给下面的变量
set @SubPlanName='MaintenancePlan_Remotebak.Subplan_1' --\'子计划\'

--获得外键约束用到的列
declare @subPlan_id varchar(100),@job_id varchar(100)
    ,@msx_job_id varchar(100),@Schedule_id varchar(100)
select @job_id=job_id,@msx_job_id=msx_job_id,
    @subPlan_id=subPlan_id from sysmaintplan_SubPlans where SubPlan_name=@SubPlanName

--按照顺序删除记录
if (@SubPlan_id is not null and @SubPlan_id<>'\')
delete from sysmaintplan_log where SubPlan_id=@SubPlan_id

if (@SubPlanName<>'\' and @SubPlanName is not null) 
delete from sysmaintplan_SubPlans where SubPlan_Name=@SubPlanName

if (@Schedule_id is not null and @Schedule_id <>'\')
delete from SysSchedules where Schedule_id=@Schedule_id

if (@job_id is not null and @job_id<>'\')
delete from sysjobs where job_id=@job_id

/**//*--------------------------------------------------------------------
在上面的句子执行完后，该维护计划的接点依然存在，此时再更新msdb中对应的视图
---------------------------------------------------------------------*/
delete
  FROM msdb.dbo.sysmaintplan_plans
--执行上述代码结束后，刷新维护计划的节点，该节点成功删除。
commit tran
if @@error<>0 Print 'no\'
else Print 'yes\'

set nocount off