How is it possible to select NULL values from the database with Active Record ?
The code below doesn't show any results, but when I change condition to 'parentId is null' it works.
$menus = Menu::model()->with(array('menuContent'=> array('params' => array(':lang'=>$lang), 'condition'=>'language=:lang')))->findAll(array('condition'=>'parentId=:parentId', 'params'=> array(':parentId'=>$parentId)));