将行值取消透视成多列

Question

我具有以下结构：

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) 

我想取消透视此表，因此它看起来像：

 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 

我可以取消旋转一层以获得NewYork列，但无法将伦敦和新加坡列设置到位。 我已经修改了以下代码以添加伦敦和新加坡，但未成功。 我只是保持不动吗？

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

) As unpvt

Answer 1

我们可以使用CROSS APPLY取消定价，然后再应用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