title: mysql deleting oldest record in a table
body: <p>Hi all I am trying to come up with a sql that will delete the single oldest row in a database, currently I have this:</p>
  
  <pre><code>DELETE FROM `videos` WHERE date_added IS NOT NULL LIMIT 1
  </code></pre>
  
  <p>Will that only ever delete from the top of my database or will it pick at random?</p>