title: Sphinx Search - Returning unique results only possible?
body: <p>We use sphinxsearch for a number of our web services.</p>
  
  <p>We were wondering if there is any way to have it return only unique results?</p>
  
  <p>As the case is now, we sometimes get results like "title matched" and "title matched" since our sphinx database <strong>does</strong> have some duplicate entries.</p>
  
  <p>Is there a way to instruct sphinx to return only unique results?</p>
  
  <p>We are using sphinx 2.0.4 and accessing it via the php pecl extension.</p>