您好我看过很多文章，但没有人回复我的问题。 我有一张表ProductPropertyPrice
CREATE TABLE [dbo].[Product_PropertyPrice](
[id] [int] IDENTITY(1,1) NOT NULL,
[ProductID] [int] NULL,
[PropertyID] [int] NULL,
[PropertyValueID] [int] NULL,
[PriceID] [int] NULL,
[ValidFrom] [date] NULL,
我希望每个产品都有一行，每个产品从日期开始有效，所有属性id和propertiesvaluesid以及价格ID为列
我尝试了这个，但没有工作可以有人帮助我吗？
抱歉，我无法发布我的代码，我收到错误，我是stachoverflow的新手 create PROCEDURE [dbo].[GetPriceTable] (@ProductTypeID int)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
SET @cols = STUFF((SELECT distinct ',' + QUOTENAME(c.PropertyID)
FROM (SELECT Product_PropertiesLookup.PropertyID,Product_PropertiesLookup.PropertyName
FROM Product_PropertiesLookup INNER JOIN
Product_PropertiesperProductType ON Product_PropertiesLookup.PropertyID = Product_PropertiesperProductType.ProductPropertyID
WHERE (Product_PropertiesperProductType.ProductTypeID = 1)) c
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
--pivot query
set @query = 'SELECT ProductID,PriceID,ValidFrom, ' + @cols + ',rownum from
( SELECT ProductID, PriceID, ValidFrom,PropertyValueID,PropertyID,
row_number() over (partition by propertyid order by productid ) as RowNum
FROM Product_PropertyPrice ) x
pivot
(
max(PropertyValueID)
for PropertyID in (' + @cols + ')
) p '
exec (@query)
END
我收到了这个结果
ProductID PriceID ValidFrom 1 2 3 4 RowNum
----------- ----------- ---------- ----------- ----------- ----------- ----------- --------------------
110 1 2015-01-01 0 NULL 1 1 1
110 1 2015-01-01 NULL NULL NULL 1 2
110 1 2015-01-01 NULL NULL 1 1 3
110 1 2015-01-01 1 NULL 1 1 4
110 1 2015-01-01 2 NULL NULL 1 5
110 1 2015-01-01 NULL NULL NULL 1 6
110 1 2015-01-01 NULL NULL NULL 1 7
110 1 2015-01-01 3 NULL NULL 1 8
110 1 2015-01-01 4 NULL 1 1 9
110 1 2015-01-01 NULL NULL 1 1 10
110 1 2015-01-01 5 NULL 1 1 11
110 1 2015-01-01 6 NULL 1 1 12
110 1 2015-01-01 7 NULL 1 1 13
110 1 2015-01-01 8 NULL 1 1 14
110 1 2015-01-01 9 NULL 1 1 15
110 1 2015-01-01 10 NULL 1 1 16
110 1 2015-01-01 11 NULL 1 1 17
110 1 2015-01-01 12 NULL 1 1 18
110 1 2015-01-01 13 NULL 1 1 19
110 1 2015-01-01 14 NULL 1 1 20
110 1 2015-01-01 15 NULL 1 1 21
110 1 2015-01-01 16 NULL 1 1 22
110 1 2015-01-01 17 NULL 1 1 23
110 1 2015-01-01 NULL NULL 1 1 24
110 1 2015-01-01 NULL NULL 1 1 25
110 1 2015-01-01 NULL NULL 1 1 26
110 1 2015-01-01 NULL NULL 1 1 27
110 1 2015-01-01 NULL NULL 1 1 28
110 1 2015-01-01 NULL NULL 1 1 29
sample data
id ProductID PropertyID PropertyValueID PriceID ValidFrom
----------- ----------- ----------- --------------- ----------- ----------
70 110 1 23 2 2015-01-01
71 110 3 1 2 2015-01-01
72 110 4 1 2 2015-01-01
73 110 1 24 2 2015-01-01
74 110 3 1 2 2015-01-01
75 110 4 1 2 2015-01-01
76 110 1 25 3 2015-01-01
77 110 3 1 3 2015-01-01
78 110 4 1 3 2015-01-01
79 110 1 26 3 2015-01-01
80 110 3 1 3 2015-01-01
81 110 4 1 3 2015-01-01
82 110 1 27 3 2015-01-01
83 110 3 1 3 2015-01-01
84 110 4 1 3 2015-01-01
Result i need
ProductID PropertyID(1) PropertyID(3) PropertyID(4) PriceID ValidFrom
110 23 1 1 2 2015-01-01
110 24 1 1 2 2015-01-01
110 25 1 1 3 2015-01-01
110 26 1 1 3 2015-01-01
110 27 1 1 3 2015-01-01
答案 0 :(得分：0)
尝试这样的事情
SELECT ProductID,
[PropertyID(1)]=Max([PropertyID(1)]),
[PropertyID(3)]=Max([PropertyID(3)]),
[PropertyID(4)]=Max([PropertyID(4)]),
ValidFrom=Max(ValidFrom)
FROM (SELECT ProductID,
rn=Row_number()
OVER(
partition BY PropertyID
ORDER BY (SELECT NULL)),
PropertyID,
CASE WHEN PropertyID = 1 THEN PropertyValueID END AS [PropertyID(1)],
CASE WHEN PropertyID = 3 THEN PropertyValueID END AS [PropertyID(3)],
CASE WHEN PropertyID = 4 THEN PropertyValueID END AS [PropertyID(4)],
PriceID,
ValidFrom AS ValidFrom
FROM Yourtable)a
GROUP BY ProductID,
rn
您需要将上述内容转换为dynamic query。如果您在转换为dynamic query