Question

我想得到一份清单，其中包含不同国家的名称，每个国家的员工人数明显不同。我无法在SQL服务器中为每个循环使用a。有没有办法实现我想要的？我可以使用country ='input country'，但我不想为每个国家都这样做。

Select   distinct Country,
     SUM(Test.[Number of Manager]) over () AS 'Number of Parts Staff/Manager',
     Count(Test.[Name]) over () AS 'Number of Test'

From Test;

Answer 1

请勿使用DISTINCT，而应使用GROUP BY：

Select Country,
       SUM([Number of Manager]) AS 'Number of Parts Staff/Manager',
       Count([Name]) AS 'Number of Test'
From Test
GROUP BY Country

Answer 2

我认为您正在寻找group by：

SELECT Country,
       SUM([Number of Manager]) AS 'Number of Parts Staff/Manager',
       Count([Name]) AS 'Number of Test'
FROM Test
GROUP BY Country;

Answer 3

SELECT Country,
     SUM(Test.[Number of Manager]) OVER () AS 'Number of Parts Staff/Manager',
     COUNT(Test.[Name]) OVER () AS 'Number of Test'
FROM Test
GROUP BY Country

Answer 4

您可以使用 PATITION BY

来完成此操作

Select   Country,
     SUM(Test.[Number of Manager]) over (partition by Country order by Country) AS 'Number of Parts Staff/Manager',
     Count(distinct Test.[Name]) over (partition by Country Country) AS 'Number of Test'

From Test;

或使用 Group By COUNTRY

的简单方法

select country,Count(distinct Test.[Name]) AS 'Number of Test', SUM(Test.[Number of Manager]) AS 'Number of Parts Staff/Manager' from test
group by country

每个不同的总和的SQL服务器

4 个答案: