DBEntity::query PHP Method

    protected static function query($qry)
    {
        if (!isset($dbLink)) {
            db();
        }
        $result = mysql_query($qry) or die(mysql_error());
        return $result;
    }

 public static function clearForAccount($accID)
 {
     return DBEntity::query('DELETE FROM account_session WHERE accountId=' . $accID);
 }