title: Check if a user exists in SQL database, make the user, if not, don't make one?
body: <p>I was wondering how to check if a user exists, and if the user does exist, tell them their account is already in use? Thanks!</p>
  
  <p>EDIT: Kind of like a COLUMN_EXISTS type function?<br />
  EDIT: It's a MySQL Server! :D</p>