SQL命令按最高金額「殺死除以死亡」

Question

假設我有一張表： ID | KILLS | DEATHS $ratio = $kills/deaths;

如何訂購字段，以便我回復最高比例的ID？對不起，英語是我的第二語言，我不知道如何改寫它，所以它更有意義。

在此先感謝。

Answer 1

你有沒有嘗試這個辦法：

select id from table order by kills/deaths desc limit 1; 

嘗試(kills + 0.0)/deaths如果它不自動升級爲浮動。

也可以嘗試kills/(deaths+0.0001)防止由零鴻溝..

Answer 2

WITH CTE AS 
(
    SELECT T.*, 
     Ratio = kills/deaths, 
     Rank = DENSE_RANK()OVER(PARTITION BY Id ORDER BY kills/deaths DESC) 
    FROM dbo.TableName T 
) 
SELECT * FROM CTE WHERE Rank = 1 

Answer 3

嘗試

SELECT TOP 1 ID, cast(Kills/Deaths as float) FROM KillsDeaths 
ORDER BY (Kills/Deaths) DESC