title: Using JOIN when reading from SQLite via ContentResolver
body: <p>How can I join two tables when using ContentResolver in android?
  Right now I am able to access the USERS table this way:</p>
  
  <pre><code>    contentUri = Uri.withAppendedPath(ContentProviderDB.CONTENT_URI, DatabaseTables.USERS);
      selection = DatabaseColumns.USER_ID + " = " + String.valueOf(userId);
      cursor = context.getContentResolver().query(contentUri, null, selection, null, null);
  </code></pre>
  
  <p>But how do I join with USER_PRODUCTS for example? As far as I can tell, the "query" method does not support JOIN operations</p>