Question

我想添加一个案例陈述来为“全部完成”返回Y / N？＆＃39;列或排除“全部完成”的所有行＆＃39; =＆＃39; Y＆＃39;。

为了全部完成＆＃39;要设置为Y，所有ID_Status都需要为每个客户和每个代码编号完成。每个客户可以拥有多个ID或Code_Number。我无法理解多个列中的CASE逻辑，其中值并不总是相同的。谢谢你的帮助。

IDTable:
ID   ID_Status Customer  Code_Number  All Complete?

1    Complete  Alex      123          Y
2    Complete  Alex      123          Y
3    Complete  Brian     321          Y
4    Complete  Brian     321          Y
5    Open      Brian     425          N
6    Complete  Brian     425          N
7    Open      Charlie   123          N
8    Complete  Charlie   123          N
9    Open      Charlie   123          N
10   Complete  Donald    555          N
11   Complete  Donald    555          N
12   Testing   Donald    555          N
13   Complete  Eric      620          Y

Answer 1

假设SQL Server 2008 +：

WITH CTE AS
(
    SELECT  *,
            COUNT(*) OVER(PARTITION BY Customer, Code_Number) Total,
            SUM(CASE WHEN Id_Status = 'Complete' THEN 1 ELSE 0 END) OVER(PARTITION BY Customer, Code_Number) Completed
    FROM dbo.YourTable
)
SELECT  ID,
        ID_Status,
        Customer,
        Code_Number,
        CASE WHEN Total = Completed THEN 'Y' ELSE 'N' END [All Complete]
FROM CTE;

Answer 2

Select * 
   , CASE WHEN EXISTS 
                     (SELECT 1 FROM TableName t1
                       Where t1.Customer = t2.Customer
                         AND t1.Code_Number = t2.Code_Number
                         AND t1.ID_Status <> 'Complete'
                      )
          THEN 'N' ELSE 'Y' END AS [All Complete?]

from TableName t2

基于多个列值的Case语句

2 个答案: