Filter to display only modified content in Views
Unfortunately impossible to do it in the current UI. 

There are 3 options AFAIK :


try the module views custom conditions
write an alter hook, 
or implement a filter handler, which is definitely going to be slightly more complicated, but probably more fun :)


A repaired :) attempt to do the alter hook (with help from another answer on this great site) and the add_where_expression function :

function main_mm_views_query_alter(&amp;$view, &amp;$query) {
  if($view-&gt;name == 'admin_views_user') {
    $query-&gt;add_where_expression(0,'users.access &lt; users.login');
  }
}


This is the view that comes with the module admin views. there are 2 columns - access and login, both are dates and this seems to work :) you will want to do a dpm($query) first, to see your actual query.