title: How to mask a column in Redshift?
body: <p>I've a requirement to keep a user table for granting access to an application where there's a password field which has to be masked.</p>
  
  <p>How to go about it?</p>
  
  <p>Example: If you query <code>select * from PG_USER;</code> in Redshift, you'd see, the password column values are shown as <code>*****</code>. How to do exactly that for my custom table?</p>