SQL - 获取具有最大值的记录

Question

我正在尝试检索价格最高的产品：

SELECT ProductName, Price 
FROM [Products]
ORDER BY Price DESC
LIMIT 1

我想知道是否有另一种方式以更高效的方式执行此操作，例如MAX。

Answer 1

使用MAX和GROUP BY

SELECT ProductName, MAX(Price) [Price]
FROM [Products]
GROUP BY ProductName
ORDER BY MAX(Price) DESC
LIMIT 1;

Answer 2

我总是用以下

完成它

SELECT top 1 Name FROM tableName
按价格订购DESC

Answer 3

select top 1 * from [Products] order by Price desc 

Answer 4

你可以使用TOP 1，但你总是要考虑打平局的可能性，所以：

SELECT TOP 1 WITH TIES ProductName, Price 
FROM [Products]
ORDER BY Price DESC