写t-sql添加计划任务

BEGIN TRANSACTION             
  DECLARE @JobID BINARY(16)   
  DECLARE @ReturnCode INT     
  SELECT @ReturnCode = 0      
IF (SELECT COUNT(*) FROM msdb.dbo.syscategories WHERE name = N'[Uncategorized (Local)]') < 1  
  EXECUTE msdb.dbo.sp_add_category @name = N'[Uncategorized (Local)]' 
 
  -- 删除同名的警报（如果有的话）。 
  SELECT @JobID = job_id      
  FROM   msdb.dbo.sysjobs     
  WHERE (name = N'KILL')        
  IF (@JobID IS NOT NULL)     
  BEGIN   
  -- 检查此作业是否为多重服务器作业   
  IF (EXISTS (SELECT  *  
              FROM    msdb.dbo.sysjobservers  
              WHERE   (job_id = @JobID) AND (server_id <> 0)))  
  BEGIN  
    -- 已经存在，因而终止脚本  
    RAISERROR (N'无法导入作业“--任务名称--”，因为已经有相同名称的多重服务器作业。', 16, 1)  
    GOTO QuitWithRollback   
  END  
  ELSE  
    -- 删除［本地］作业  
    EXECUTE msdb.dbo.sp_delete_job @job_name = N'--任务名称--'  
    SELECT @JobID = NULL 
  END  
 
BEGIN  
 
  -- 添加作业 
  EXECUTE @ReturnCode = msdb.dbo.sp_add_job @job_id = @JobID OUTPUT , @job_name = N'--任务名称--', @owner_login_name = N'sa', @description = N'没有可用的描述。', @category_name = N'[Uncategorized (Local)]', @enabled = 1, @notify_level_email = 0, @notify_level_page = 0, @notify_level_netsend = 0, @notify_level_eventlog = 2, @delete_level= 0 
  IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback  
 
  -- 添加作业步骤
  EXECUTE @ReturnCode = msdb.dbo.sp_add_jobstep @job_id = @JobID, @step_id = 1, @step_name = N'backup',
  @command = N'--任务内容--', @database_name = N'master', @server = N'', @database_user_name = N'', @subsystem = N'TSQL', @cmdexec_success_code = 0, @flags = 0, @retry_attempts = 0, @retry_interval = 1, @output_file_name = N'', @on_success_step_id = 0, @on_success_action = 1, @on_fail_step_id = 0, @on_fail_action = 2 
  IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback  
  EXECUTE @ReturnCode = msdb.dbo.sp_update_job @job_id = @JobID, @start_step_id = 1  
 
  IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback  
 
  -- 添加作业调度
  EXECUTE @ReturnCode = msdb.dbo.sp_add_jobschedule @job_id = @JobID, @name = N'02:00', @enabled = 1, @freq_type = 4,
  @active_start_time = 000000, @freq_interval = 90, @freq_subday_type = 1, @freq_subday_interval = 0, @freq_relative_interval = 0, @freq_recurrence_factor = 0, @active_end_date = 99991231, @active_end_time = 235959 
  IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback  
 
  -- 添加目标服务器 
  EXECUTE @ReturnCode = msdb.dbo.sp_add_jobserver @job_id = @JobID, @server_name = N'(local)'  
  IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback  
 
END 

COMMIT TRANSACTION           
GOTO   EndSave               
QuitWithRollback: 
  IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION  
EndSave: