如何排列数据透视表的列 table

Question

我有一个像这样创建的枢轴table：

date    Services Uptime     Services Downtime   Centers Downtime Centers Uptime
-----   --------- -     ------------------    ----------------    ---------------
12/5/14      100.00%              0.00%                   100.00%        100.00%    
12/12/14     100.00%              0.00%                     0.00%          0.00%
12/19/14     100.00%              0.00%                   100.00%        0.00%
12/26/14     100.00%              0.00%                   100.00%         0.00%

我希望它作为支点出现 table，像这样：

Date         Name                Uptime               Downtime
-----        ------            ---------            -------------
12/5/14     Services             100.00%                 0.00%  
12/5/14      Center              100.00%               100.00%
12/12/14    services             100.00%                 0.00%  
12/12/14    Center                 0.00%                 0.00%

Answer 1

如果您只有这 2 个值，请尝试 UNION：

select  [date]
        ,'Services'
        ,[Services Uptime] as Uptime
        ,[Services Dowtime] as Downtime
from    myTable
union all
select  [date]
        ,'Center'
        ,[Centers Uptime] as Uptime
        ,[Centers Dowtime] as Downtime
from    myTable

编辑：包括 Jason 关于 "union all"

的建议

Answer 2

可能您需要 unpivot 而不是旋转。我将使用 cross apply 和 tables valued constructor.

来做到这一点

性能方面，如果你有更多 names

，这将比 Union All 更好

SELECT [date],NAME, uptime, downtime
FROM   Yourtable
       CROSS apply (VALUES ('service',Services_Uptime,Services_Downtime),
                           ('center',Centers_Uptime,Centers_Downtime) ) 
                    cs (NAME, uptime, downtime)

如何排列数据透视表的列 table

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