SQL Server Agent Job - Exists then Drop?

Try something like this:

DECLARE @jobId binary(16)SELECT @jobId = job_id FROM msdb.dbo.sysjobs WHERE (name = N'Name of Your Job')IF (@jobId IS NOT NULL)BEGIN    EXEC msdb.dbo.sp_delete_job @jobIdENDDECLARE @ReturnCode intEXEC @ReturnCode =  msdb.dbo.sp_add_job @job_name=N'Name of Your Job'

Best to read the docs on all the parameters required for 'sp_add_job' and 'sp_delete_job'

IF EXISTS (SELECT job_id             FROM msdb.dbo.sysjobs_view             WHERE name = N'Your Job Name')EXEC msdb.dbo.sp_delete_job @job_name=N'Your Job Name'                            , @delete_unused_schedule=1

If you generate the SQL script for a job (tested with enterprise manager), it automatically builds the check for existance and drop statements for you. Example below: -

DECLARE @JobID BINARY(16)   DECLARE @ReturnCode INT  SELECT @ReturnCode = 0  -- Delete the job with the same name (if it exists)  SELECT @JobID = job_id   FROM  msdb.dbo.sysjobs  WHERE (name = N'My test job')   IF (@JobID IS NOT NULL)  BEGIN  -- Check if the job is a multi-server job  IF (EXISTS (SELECT *   FROM msdb.dbo.sysjobservers   WHERE (job_id = @JobID) AND (server_id <> 0)))   BEGIN   -- There is, so abort the script   RAISERROR (N'Unable to import job ''My test job'' since there is already a multi-server   job with this name.', 16, 1) END   ELSE   -- Delete the [local] job   EXECUTE msdb.dbo.sp_delete_job @job_name = N'My test job'   SELECT @JobID = NULL  END