title: How can I use now() in Doctrine 2 DQL?
body: <pre><code>$ php app/console doctrine:query:dql 'SELECT NOW()'
  </code></pre>
  
  <blockquote>
    <p>[Doctrine\ORM\Query\QueryException]
     [Syntax Error] line 0, col 7: Error: Expected known function, got 'now' </p>
  </blockquote>
  
  <p>How can I use MySQL's <code>NOW()</code> function with Doctrine's DQL?</p>