SQL max产品价格

Question

我有一张产品表，每张唱片都有售出的价格，可能会有所不同

Product          Price
a                2
a                3
a                4
a                1
b                10
b                15
b                20

我想要一个查询，它将给出产品a的最高价格和产品b的最高价格，而不再是

我有成千上万的产品，所以案件无济于事

Answer 1

使用MAX和Group By

SELECT Product, MAX(Price)
FROM YourTable
GROUP BY Product

Answer 2

select product, max(price) as max_price
from products
group by product

Answer 3

使用MAX功能和Group By关键字

SELECT Product, MAX(Price) FROM products  GROUP BY Product