title: SQL server job dynamic schedule
body: <p>I have a set of SQL server jobs and I want the schedule for them to be dynamic i.e. I want the next run date to come from a table.</p>
  
  <p>I have tried updating  <code>next_run_date</code> in the <code>sysjobschedules</code> table and <code>next_scheduled_run_date</code> in  <code>sysjobactivity</code> table but this doesn't do anything.</p>
  
  <p>How would I go about this? </p>