透视/逆透视多列

Question

如何获得数据：

OrderID | Ver | Res | OI | Ret | Corp 
----------------------------------------------- 
     1 | 'BUD' | 57823 | 11111 | 34304 | 12344 
     2 | 'ACT' | 12345 | 23456 | 45678 | NULL 

要

Ver1 | Res1 | OI1 | Ret1 | Corp1 | Ver2 | Res2 | OI2 | Ret2 | Corp2 
----------------------------------------------------------------------------- 
'BUD' | 57823 | 11111 | 34304 | 12344 | 'ACT' | 12345 | 23456 | 45678 | NULL 

难道我使用多个支点？！？！

Answer 1

Without pivot it can be done by using this code : 

SELECT 
MAX(CASE WHEN ORDERID=1 THEN VER END) VER1, 
MAX(CASE WHEN ORDERID=1 THEN RES END) RES1, 
MAX(CASE WHEN ORDERID=1 THEN OI END) OI1, 
MAX(CASE WHEN ORDERID=1 THEN RET END)RET1, 
MAX(CASE WHEN ORDERID=1 THEN CORP END) CORP1, 

MAX(CASE WHEN ORDERID=2 THEN VER END)VER2, 
MAX(CASE WHEN ORDERID=2 THEN RES END) RES2, 
MAX(CASE WHEN ORDERID=2 THEN OI END) OI2, 
MAX(CASE WHEN ORDERID=2 THEN RET END)RET2, 
MAX(CASE WHEN ORDERID=2 THEN CORP END) CORP2 

FROM yourtable 

Answer 2

以下查询将适用于任意数量的行。

DECLARE @SQL NVARCHAR(MAX) 
WITH CTE 
AS 
(
SELECT 1 AS REF,Q,CONCAT(ITEM,ORDERID) AS COL FROM(
SELECT CAST(ORDERID AS VARCHAR(100)) AS ORDERID, 
CAST(VER AS VARCHAR(100)) AS VER, 
CAST(RES AS VARCHAR(100)) AS RES, 
CAST(OI AS VARCHAR(100)) AS OI, 
CAST(RET AS VARCHAR(100)) AS RET, 
CAST(CORP AS VARCHAR(100)) AS CORP FROM ORDERS) K 
UNPIVOT 
(Q FOR ITEM IN (VER,RES,[OI],RET,CORP)) UP 
) 

SELECT @SQL = N'WITH CTE 
AS 
(
SELECT 1 AS REF,Q,CONCAT(ITEM,ORDERID) AS COL FROM(
SELECT CAST(ORDERID AS VARCHAR(100)) AS ORDERID, 
CAST(VER AS VARCHAR(100)) AS VER, 
CAST(RES AS VARCHAR(100)) AS RES, 
CAST(OI AS VARCHAR(100)) AS OI, 
CAST(RET AS VARCHAR(100)) AS RET, 
CAST(CORP AS VARCHAR(100)) AS CORP FROM ORDERS) K 
UNPIVOT 
(Q FOR ITEM IN (VER,RES,[OI],RET,CORP)) UP 
) 
SELECT * FROM CTE 
PIVOT 
(MAX(Q) FOR COL IN ('+ STUFF((SELECT ','+COL FROM CTE FOR XML PATH('')),1,1,'') +')) P' 

EXEC SP_EXECUTESQL @SQL