$query=db_query('SELECT * FROM {webform_submissions} WHERE submitted < :purge_timestamp AND nid IN (:nid)',array(':purge_timestamp'=>$purge_timestamp,':nid'=>$checkboxes));
$query=db_query('SELECT * FROM {webform_submissions} WHERE submitted < :purge_timestamp AND nid IN (:nid)'.($limit?' LIMIT '.check_plain($limit):''),array(':purge_timestamp'=>$purge_timestamp,':nid'=>$checkboxes));
$rows=$query->fetchAll();
// If submissions found to purge, get on with it.
@@ -177,6 +178,14 @@ function webform_purge_admin_settings_form($form, &$form_state) {