title: Finding records in Oracle DB with non-alphanumeric characters
body: <p>I need to find all the records in an Oracle DB which have non-alphanumeric characters. I am trying to use the following, but it does not return anything. And I know there are records with non-alphanumeric characters:</p>
  
  <p>select * from users where first_name  LIKE '%[^a-z0-9A-Z]%'</p>