title: Get unique contact names from contacts provider?
body: <p>I am querying contacts content provider as shown below, it returns duplicate names of those contacts which have multiple contact numbers while I care for only Unique names despite number of contact numbers. 
  I used: </p>
  
  <pre><code>Cursor cursor = context.getContentResolver().query(
                      Phone.CONTENT_URI,
                      new String[] { Phone._ID,
                              Phone.DISPLAY_NAME,
                              Phone.NUMBER },
                      null, null,
                      null);
  </code></pre>
  
  <p>How to query for only Unique names? </p>