-- 3. Chèn lại vào CTDONDH (Chi tiết đơn hàng D001) ...
RANK() OVER (ORDER BY score DESC) AS score_rank, DENSE_RANK() OVER (ORDER BY score DESC) AS dense_rnk, ROW_NUMBER() OVER (ORDER BY score DESC) AS row_num LAG(score) OVER (ORDER BY score DESC) AS ...