title: how to perform a max() on an alphanumeric column correctly
body: <p>I have a table for users where the IDs are such:  ASmith1, Asmith2, Asmith3, Asmith5, Asmith9, Asmith10, Asmith13, Asmith15, Asmith21, etc.</p>
  
  <p>When I get the Max() of that column, I get Asmith9. What query or function can I use to get Asmith21?</p>