没有聚合功能的TSQL Pivot

我有这样的桌子...

CustomerID   DBColumnName   Data
--------------------------------------
1            FirstName      Joe
1            MiddleName     S
1            LastName       Smith
1            Date           12/12/2009
2            FirstName      Sam
2            MiddleName     S
2            LastName       Freddrick
2            Date           1/12/2009
3            FirstName      Jaime
3            MiddleName     S
3            LastName       Carol
3            Date           12/1/2009

我想要这个

使用PIVOT可以吗？

CustomerID  FirstName   MiddleName          LastName        Date
----------------------------------------------------------------------
1           Joe             S               Smith           12/12/2009
2           Sam             S               Freddrick       1/12/2009
3           Jaime           S               Carol           12/1/2009

您可以使用MAX聚合，它将仍然有效。一个值的最大值=该值。

在这种情况下，您还可以在customerid上自我连接5次，并按每个表引用按dbColumnName进行过滤。它可能会更好。

是的，但是为什么 ！！？？

   Select CustomerID,
     Min(Case DBColumnName When 'FirstName' Then Data End) FirstName,
     Min(Case DBColumnName When 'MiddleName' Then Data End) MiddleName,
     Min(Case DBColumnName When 'LastName' Then Data End) LastName,
     Min(Case DBColumnName When 'Date' Then Data End) Date
   From table
   Group By CustomerId

WITH pivot_data AS
(
SELECT customerid, -- Grouping Column
dbcolumnname, -- Spreading Column
data -- Aggregate Column
FROM pivot2 
)
SELECT customerid, [firstname], [middlename], [lastname]
FROM pivot_data
PIVOT (max(data) FOR dbcolumnname IN ([firstname],[middlename],[lastname])) AS p;

SELECT
main.CustomerID,
f.Data AS FirstName,
m.Data AS MiddleName,
l.Data AS LastName,
d.Data AS Date
FROM table main
INNER JOIN table f on f.CustomerID = main.CustomerID
INNER JOIN table m on m.CustomerID = main.CustomerID
INNER JOIN table l on l.CustomerID = main.CustomerID
INNER JOIN table d on d.CustomerID = main.CustomerID
WHERE f.DBColumnName = 'FirstName' 
AND m.DBColumnName = 'MiddleName' 
AND l.DBColumnName = 'LastName' 
AND d.DBColumnName = 'Date' 

编辑：我写了没有编辑器，并且没有运行SQL。希望您能明白。

好的，很抱歉这个问题。gbn让我步入正轨。这就是我一直在寻找的答案。

SELECT [FirstName], [MiddleName], [LastName], [Date] 
FROM #temp 
PIVOT
(   MIN([Data]) 
    FOR [DBColumnName] IN ([FirstName], [MiddleName], [LastName], [Date]) 
)AS p

然后，我不得不使用while语句并将上述语句构建为varchar并使用dynmaic sql。

使用这样的东西

SET @fullsql = @fullsql + 'SELECT ' + REPLACE(REPLACE(@fulltext,'(',''),')','')
SET @fullsql = @fullsql + 'FROM #temp '
SET @fullsql = @fullsql + 'PIVOT'
SET @fullsql = @fullsql + '('
SET @fullsql = @fullsql + ' MIN([Data])'
SET @fullsql = @fullsql + ' FOR [DBColumnName] IN '+@fulltext
SET @fullsql = @fullsql + ')'
SET @fullsql = @fullsql + 'AS p'

EXEC (@fullsql)

使用while循环构建@fulltext并从表中选择不同的列名称。感谢您的回答。

OP实际上并不需要在没有聚集的情况下进行数据透视，但是对于那些来这里的人来说，他们知道如何看待：

SQL参数化CTE查询

该问题的答案涉及一种情况，即需要不进行汇总的数据透视，因此，执行此操作的示例是解决方案的一部分。

试试这个：

SELECT CUSTOMER_ID, MAX(FIRSTNAME) AS FIRSTNAME, MAX(LASTNAME) AS LASTNAME ...

FROM
(

SELECT CUSTOMER_ID, 
       CASE WHEN DBCOLUMNNAME='FirstName' then DATA ELSE NULL END AS FIRSTNAME,
       CASE WHEN DBCOLUMNNAME='LastName' then DATA ELSE NULL END AS LASTNAME,
        ... and so on ...
GROUP BY CUSTOMER_ID

) TEMP

GROUP BY CUSTOMER_ID

这应该工作：

select * from (select [CustomerID]  ,[Demographic] ,[Data]
from [dbo].[pivot]
) as Ter

pivot (max(Data) for  Demographic in (FirstName, MiddleName, LastName, [Date]))as bro

这是为枢纽查询建立动态栏位的好方法：

-将值汇总到tmp表

declare @STR varchar(1000)
SELECT  @STr =  COALESCE(@STr +', ', '') 
+ QUOTENAME(DateRange) 
from (select distinct DateRange, ID from ##pivot)d order by ID

---查看生成的字段

print @STr

exec('  .... pivot code ...
pivot (avg(SalesAmt) for DateRange IN (' + @Str +')) AS P
order by Decile')