title: sqlite3 error when updating to django 1.4
body: <p>I have created a new virtual environment so that I can update my code from django1.3 to django1.4.  The django1.3 environment has no issues with the sqlite version and database I am using.  The Django1.4 version gives me a error of:</p>
  
  <pre><code>DISTINCT ON fields is not supported by this database backend
  </code></pre>
  
  <p>I am not finding any information on changes to the new version that might cause this.  Does anyone know why it might work fine in 1.3 and not 1.4?</p>