SQL Server 2008 R2分組

Question

這是我的腳本。

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 

在執行時它顯示

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

我需要它什麼顯示而無需在jt.exempt_status字段改變值是。

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

Answer 1

選擇它們時，您可以使用CASE表達格式化你的價值觀：

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