需要将数据透视表转换为另一种格式

时间:2014-05-01 14:32:00

标签: sql sql-server pivot pivot-table

我想找到一些方法将数据透视表更改回普通表。

表1的格式如下:

acct type Hr08_C Hr09_C Hr10_C Hr08_H Hr09_H Hr10_H
 1    1     2      3      4      5      6       7

表2的格式如下:

acct type hour phone value
  1   1     8    C     2
  1   1     9    C     3
  1   1     10   C     3
  1   1     8    H     5
  1   1     9    H     6
  1   1     10   H     7

我想将表格1更改为表格2格式。请问有关查询的任何想法吗?

1 个答案:

答案 0 :(得分:1)

首先执行UNPIVOT,然后解码列名称:

declare @t table (acct int,type int, Hr08_C int, Hr09_C int, Hr10_C int,
                       Hr08_H int, Hr09_H int, Hr10_H int)
insert into @t (acct,type,Hr08_C,Hr09_C,Hr10_C,Hr08_H,Hr09_H,Hr10_H) values
( 1,1,2,3,4,5,6,7)

select
    acct,type,CONVERT(int,SUBSTRING(Encoded,3,2)) as hour,
    SUBSTRING(Encoded,6,1) as phone,value
from @t
unpivot (value for Encoded in (Hr08_C,Hr09_C,Hr10_C,Hr08_H,Hr09_H,Hr10_H)) t

结果:

acct        type        hour        phone value
----------- ----------- ----------- ----- -----------
1           1           8           C     2
1           1           9           C     3
1           1           10          C     4
1           1           8           H     5
1           1           9           H     6
1           1           10          H     7