title: rawquery() issue
body: <p>I am using rawquery() for perform inner join, but this is not giving me any error and does not working, if i use this query directly into sqlite browser than this is working but in application this query does not work, following is my code, sorry for bad English communication</p>
  
  <pre><code>public void deleteFifo() {
      final String MY_QUERY1 = "Delete from Items where res_id in (select _id from Favourite where _id not in (select _id from Favourite order by date desc limit 50))";
      final String MY_QUERY2 = "Delete from Favourite where _id not in (select _id from Favourite order by date desc limit 50)";
      db.rawQuery(MY_QUERY1, null);
      db.rawQuery(MY_QUERY2, null);
  }
  </code></pre>