title: How many arguments does COALESCE accept?
body: <p>I couln't find this in SO and thought it might be worth finding it here as the oracle documentation doesn't specify it.</p>
  
  <p><a href="http://docs.oracle.com/cd/B28359_01/server.111/b28286/functions023.htm" rel="nofollow">http://docs.oracle.com/cd/B28359_01/server.111/b28286/functions023.htm</a></p>