title: Revoking SELECT from database owner in postgresql
body: <p>I am trying to revoke <code>SELECT</code> from the user which is the database owner. 
  I have logged in as the <code>database_owner</code> into psql.</p>
  
  <p>And then run the following command </p>
  
  <pre><code>REVOKE SELECT ON ALL TABLES IN SCHEMA "some_schema" FROM database_owner;
  </code></pre>
  
  <p>This command run with giving <code>REVOKE</code> as its output.</p>
  
  <p>However at the end, the user is still able to <code>SELECT</code> from tables in the schema. Is it possible to revoke this privilege from database owner?</p>