title: how to reuse deleted primary keys in mysql?
body: <p>i've got an column named 'id' in a mysql table which also is a primary key that auto-increments.</p>
  
  <p>when i delete rows their id's will also be deleted thus creating "holes" in my id sequence, eg.</p>
  
  <p>1, 2, 3, 9, 10, 30 and so on</p>
  
  <p>is there a way of reusing these deleted id:s?</p>