SQL服务器在多列上进行透视

Question

我试图转向多列.我正在使用SQL Server 2008.这是我到目前为止所尝试的

CREATE TABLE #t ( id int, Rscd varchar(10),Accd varchar(10),position int)

INSERT INTO #t Values (10,'A','B',1)

INSERT INTO #t Values (10,'C','D',2)

Select id,[1],[2],[11],[12] FROM
(SELECT id, Rscd,Accd, position , position +10 as Aposition 
From #t)
As query
PIVOT (MAX(Rscd )
      FOR Position IN ([1],[2])) AS Pivot1
      PIVOT (MAX(Accd )
      FOR Aposition IN ([11],[12])) AS Pivot2

以下是我得到的结果

id  1     2     11    12
10  NULL  C     NULL  D
10  A     NULL  B     NULL

但我想要实现的结果是,

id  1   2   11   12
10  A   C   B    D

有帮助吗？我的代码有什么问题.

Answer 1

我会首先将列拆分成对,然后转动它们.基本上,逆透视过程中会转化列对(rscd,position和accd,aposition)为行,那么你可以申请支点.代码将是:

select id, [1], [2], [11], [12]
from
(
  select id, col, value
  from #t
  cross apply
  (
    select rscd, position union all
    select Accd, position + 10
  ) c (value, col)
) d
pivot
(
  max(value)
  for col in ([1], [2], [11], [12])
) piv;

请参阅SQL Fiddle with Demo

Answer 2

Select id,sum([1]),sum([2]),sum([11]),sum([12]) FROM
(SELECT id, Rscd,Accd, position , position +10 as Aposition 
From #t)
As query
PIVOT (MAX(Rscd )
      FOR Position IN ([1],[2])) AS Pivot1
      PIVOT (MAX(Accd )
      FOR Aposition IN ([11],[12])) AS Pivot2

group by id