title: Set boolean to 1 with doctrine
body: <p>I get some troubles with a very simple request that I try to make working with doctrine:</p>
  
  <pre><code>    return $this-&gt;createQueryBuilder('l')
                  -&gt;set('l.valide', true)
                  -&gt;andWhere('l.artiste=:artiste')
                  -&gt;andWhere('l.client=:client')
                  -&gt;andWhere('l.annonce=:annonce')
                  -&gt;setParameters(
                      array(
                          ':artiste' =&gt; $artiste,
                          ':client'  =&gt; $client,
                          ':annonce' =&gt; $annonce
                      ))
                  -&gt;getQuery()
                  -&gt;getResult();
  </code></pre>
  
  <p>The request is executing without errors, but the update is not.
  This request has to put 1 in the field 'valide'.
  Some items in the table is matching with the 3 where clause.</p>
  
  <p>What is wrong ?</p>
  
  <p>Thanks for help</p>