Question

我已经编写了一些代码（如下），如果组织级别低于3，则会尝试选择职位名称和分配给职位的员工人数。

然后我试图插入另外两个条件。当OrganizationLevel低于2时，职称变为大写。

但是我正在努力为这个SQL实现第二个条件。当OrganizationLevel = 1时，职位名称应显示＆＃39; MANAGING DIRECTOR＆＃39;。

有人可以帮助我实现这个目标吗？这就是我到目前为止所拥有的：

with T as( SELECT IIF ( OrganizationLevel < 2, UPPER ( IIF ( OrganizationLevel=1, 'MANAGING DIRECTOR', JobTitle )), JobTitle ) AS JobTitle , OrganizationLevel
from HumanResources.Employee)
select count(*) AS NumOfEmp,JobTitle from T 
where OrganizationLevel < 3 group by JobTitle order by JobTitle;

谢谢。

Answer 1

您应该尝试使用CASE表达式：

with T as( 
SELECT case
        when OrganizationLevel = 1 then 'MANAGING DIRECTOR'
        when OrganizationLevel < 2 then upper(JobTitle)
        else JobTitle 
    end AS JobTitle,
    OrganizationLevel
from HumanResources.Employee)

select count(*) AS NumOfEmp, JobTitle 
from T 
where OrganizationLevel < 3 
group by JobTitle 
order by JobTitle;

多条件选择语句

1 个答案: