ขอสอบถามเกี่ยวกับ PDO function ครับเกียวกับ Statement หรือ คำสั่งบางประการ ที่ทำให้เกิดข้อผิดพลาด

class Database extends PDO{

    public function __construct() {
           $server = 'Crazy\INTz';
           $dbname = 'mvc';
           $user   = 'sa';
           $password = '12345678';
        parent::__construct('mssql:host='.$server.';'.'dbname='.$dbname
                            ,$user
                            ,$password);
        echo "Connected !";
    }

}

class Model {

    public function __construct() {
         $this->database = new Database();
    }

}

class Login extends Controller{
    function __construct() {
        parent::__construct();
    }
    
    function index(){
        $this->view->render('login/index');
    }
    
    function run(){
        $this->model->run();
    }
}

class Login_Model extends Model{
    
    public function __construct() {
        parent::__construct();
    }
    
    public function run(){
        $sth = $this->db->prepare("SELECT ID FROM Users WHERE Login = :login And Password = :password "); 
        $sth->execute(array(
           ':login' => $_POST['login'],
            ':password' => $_POST['password']
        ));
        $data = $sth->fetchAll();
        print_r($data); 
    }
}