Scheduled Task or Job

Create a scheduled Job

Create a Job

To add a job first we have to use a stored procedure named [sp_add_job](https://msdn.microsoft.com/en-us/library/ms187358.aspx)

USE msdb ;
GO
EXEC dbo.sp_add_job
@job_name = N'Weekly Job' ;  -- the job name

Then we have to add a job step using a stored procedure named [sp_add_jobStep](https://msdn.microsoft.com/en-us/library/ms178625.aspx)

EXEC sp_add_jobstep
@job_name = N'Weekly Job',  -- Job name to add a step
@step_name = N'Set database to read only',  -- step name
@subsystem = N'TSQL',  -- Step type
@command = N'ALTER DATABASE SALES SET READ_ONLY',   -- Command
@retry_attempts = 5,  --Number of attempts
@retry_interval = 5 ; -- in minutes

Target the job to a server

EXEC dbo.sp_add_jobserver
@job_name = N'Weekly Sales Data Backup',
@server_name = 'MyPC\data;   -- Default is LOCAL
GO

Create a schedule using SQL

To Create a schedule we have to use a system stored procedure called sp_add_schedule

USE msdb
GO

EXEC sp_add_schedule
    @schedule_name = N'NightlyJobs' ,  -- specify the schedule name
    @freq_type = 4,   -- A value indicating when a job is to be executed (4) means Daily
    @freq_interval = 1,  -- The days that a job is executed and depends on the value of `freq_type`.
    @active_start_time = 010000 ;   -- The time on which execution of a job can begin
GO

There are more parameters that can be used with sp_add_schedule you can read more about in the the link provided above.

Attaching schedule to a JOB

To attach a schedule to an SQL agent job you have to use a stored procedure called sp_attach_schedule

-- attaches the schedule to the job BackupDatabase
EXEC sp_attach_schedule
   @job_name = N'BackupDatabase',  -- The job name to attach with
   @schedule_name = N'NightlyJobs' ;  -- The schedule name
GO