SQL多個where是一個新的表格列

Question

我有一些問題，是由於我缺乏在語言經驗分配，想您的幫助......

我想要的代碼返回表中的例子如下：

T01 -- T02 -- T03 
23,00 32,00 43,00 

所以，我的繼承人代碼：

SELECT 
SUM([TOTAL $]) AS T01 
FROM PFIN_base 
WHERE [COORD] = 'alfa' 
UNION 
SELECT 
SUM([TOTAL $]) AS T02 
FROM PFIN_base 
WHERE [COORD] = 'beta' 
UNION 
SELECT 
SUM([TOTAL $]) AS T03 
FROM PFIN_base 
WHERE [COORD] = 'gama' 

此代碼返回以下結果：

T01 
23,00 
32,00 
43,00 

我如何得到想要的結果？ 謝謝！

Answer 1

你想有條件聚集：

select sum(case when coord = 'alfa' then [TOTAL $] end) as T01, 
     sum(case when coord = 'beta' then [TOTAL $] end) as T02, 
     sum(case when coord = 'gamma' then [TOTAL $] end) as T03 
from PFin_base