title: What does MySQL do when auto incrementing IDs overflow?
body: <p>I have a django app that uses MySQL as the database backend. It's been running for a few days now, and I'm up to ID 5000 in some tables already. </p>
  
  <p>I'm concerned about what will happen when I overflow the datatype.</p>
  
  <p>Is there anyway to tell the auto increment to start over at some point? My data is very volatile, so when I do overflow the ID, there is no possible way that ID 0, or anywhere near that will still be in use. </p>