COUNT(CASE WHEN) SQL 中的重复行

Question

这里是初级 SQL 用户。

我需要我的桌子看起来像这样：

ModuleID | Draft | Proposed | Committed | Total
---------------------------------------------
A        |    1  |    0     |     1     | 2

目前看起来是这样的：

ModuleID | Draft | Proposed | Committed | Total
---------------------------------------------
A        |    1  |    0     |     1     | 1
A        |    0  |    0     |     1     | 1

代码如下：

SELECT T3.NAME AS ModuleID, 
   COUNT(CASE WHEN T4.LITERAL_NAME = 'Draft' THEN 1 END) AS Draft,
   COUNT(CASE WHEN T4.LITERAL_NAME = 'Proposed' THEN 1 END) AS Proposed,
   COUNT(CASE WHEN T4.LITERAL_NAME = 'Committed' THEN 1 END) AS Committed,
   SUM(1) AS Total

FROM ...
WHERE ...

GROUP BY T4.LITERAL_NAME,T3.NAME

所以它提取了正确的信息，但它复制了每列的模块 ID。我已经搜索了董事会和谷歌，无法弄清楚出了什么问题。请帮忙！

Answer 1

GROUP BY T4.LITERAL_NAME,T3.NAME

改成

GROUP BY T3.NAME