逆透視行值到multple列

Question

我已在用下面的結構如下：

http://sqlfiddle.com/#!6/0e72e/8

CREATE TABLE Prices 
(
Day date, 
ProductName nVARCHAR(10), 
Location nVARCHAR(10), 
RegPrice1 float, 
SalePrice1 float, 
SalePrice2 float 
) 

INSERT INTO Prices VALUES ('6/24/2014', 'xbox', 'NewYork',30,20,10) 
INSERT INTO Prices VALUES ('6/24/2014', 'xbox', 'London', 100,80,60) 
INSERT INTO Prices VALUES ('6/24/2014', 'xbox', 'Singapore', 70,50,30) 
INSERT INTO Prices VALUES ('6/24/2014', 'watch1','NewYork', 500,400,300) 
INSERT INTO Prices VALUES ('6/24/2014', 'watch1','London', 1000,800,600) 
INSERT INTO Prices VALUES ('6/24/2014', 'watch1','Singapore', 999,888,777) 

我想這樣它看起來像到了unpivot此表：

Day   Pr_Name PriceType NewYork London Singapore 
2014-06-24 xbox RegPrice1 30  100  70 
2014-06-24 xbox SalePrice1 20  80  50 
2014-06-24 xbox SalePrice2 10  60  30 
2014-06-24 watch1 RegPrice1 500  1000 999 
2014-06-24 watch1 SalePrice1 400  800  888 
2014-06-24 watch1 SalePrice1 300  600  777 

我能夠轉移一層來獲得NewYork列，但我沒有能夠獲得倫敦和新加坡的專欄。我已經修改了下面的代碼來添加倫敦和新加坡，但一直沒有成功。我只是保持不透明嗎？

select Day, ProductName, PriceType, NewYork 
from (select * from Prices) as t 
Unpivot 
(
    NewYork for PriceType in (RegPrice1, SalePrice1, SalePrice2) 

) As unpvt 

Answer 1

我們可以使用CROSS APPLY來unpivot的價格，然後應用PIVOT

SELECT 
* 
FROM 

    (select Day, ProductName, Location, col, value 
    from Prices 
    cross apply 
    (
     select 'RegPrice1' , Prices.RegPrice1 union all 
     select 'SalePrice1', Prices.SalePrice1 union all 
     select 'SalePrice2', Prices.SalePrice2 
    ) c (col, value) 
) PD 
    PIVOT 
    (max(value) for Location in ([NewYork],[London],[Singapore]) 
)pvt