sql-server-2008-r2 - SQL Server 2008 R2 分组

Question

这是我的脚本。

select jt.exempt_status as ExemptStatus, COUNT(*) as ExemptCount
from employee as e
join job_title as jt
    on e.job_title = jt.job_title
group by jt.exempt_status

执行时显示

ExemptStatus     ExemptCount
-----------------------------    
E                2
N                5

我需要它在不更改 jt.exempt_status 字段中的值的情况下显示。

ExemptStatus     ExemptCount
-----------------------------    
Exempt           2
Non-Exempt       5

Answer 1

CASE选择它们时，您可以使用表达式来格式化您的值：

select CASE jt.exempt_status 
    WHEN 'E' THEN 'Exempt'
    WHEN 'N' THEN 'Non-Exempt'
    END 
    as ExemptStatus, COUNT(*) as ExemptCount
from employee as e
join job_title as jt
    on e.job_title = jt.job_title
group by jt.exempt_status