title: Other alternatives for date/timestamp during delta-import
body: <p>For Performing delta-update in Solr, last_index_time (which is stored in dataimport.properties) is compared with a date/timestamp column in Database.</p>
  
  <p>Is it possible to configure in Solr so that:</p>
  
  <blockquote>
    <ul>
    <li>we use some other column (say an <strong>'id' which increases sequentially</strong>)    from Database instead of date/timestamp ? </li>
    <li><strong>last_index_id</strong> is stored in    dataimport.properties instead of last_index_time ? </li>
    <li>during delta-import    we may use a condition like <strong>'where id > dataimporter.last_index_id'</strong> ?</li>
    </ul>
  </blockquote>
  
  <p>Thanks in Advance!</p>