支点及;在SQL Server中使用日期取消PIVOT功能
我目前正在使用pivot、unpivot检索最近6个可用日期数据。有人能帮我解答这个问题吗支点及;在SQL Server中使用日期取消PIVOT功能,sql,sql-server,tsql,pivot,unpivot,Sql,Sql Server,Tsql,Pivot,Unpivot,我目前正在使用pivot、unpivot检索最近6个可用日期数据。有人能帮我解答这个问题吗 select * from #myTable unpivot (value for Area in (abc,def,fgh,ijk,klp)) up pivot (max(value) for [date] in ( ##-- Here I need to get the last 6 available dates less than current date )) p [Date]列的数据类型为
select *
from #myTable
unpivot (value for Area in (abc,def,fgh,ijk,klp)) up
pivot (max(value) for [date] in (
##-- Here I need to get the last 6 available dates less than current date
)) p
[Date]
列的数据类型为日期。
my db中日期的示例值
2017-09-16,
2017-09-09,
2017-09-02,
2017-08-26,
2017-07-22,
2017-07-01,
2017-06-24,
2017-06-11
根据您的示例数据,一个区域的前6名对于每个区域都是相同的,因为区域是列名。有了这些信息,我们可以在原始轴之后使用动态取消pivot
declare @table table (TheDate date, abc int, def int, fgh int, ijk int, klp int)
insert into @table
values
('20170916',1,2,34,4,5),
('20170909',2,3,4,5,676),
('20170902',6,7,8,8,9)
DECLARE @DynamicPivotQuery AS NVARCHAR(MAX)
DECLARE @ColumnName AS NVARCHAR(MAX)
if object_id('tempdb..#staging') is not null drop table #staging
select
Area
,TheDate
,Val
into #staging
from @table
unpivot
(Val for Area in (abc,def,fgh,ijk,klp)
) up
--Get distinct values of the PIVOT Column / top 6 by date
SELECT @ColumnName= ISNULL(@ColumnName + ',','')
+ QUOTENAME(TheDate)
FROM (SELECT DISTINCT TOP 6 TheDate FROM #staging ORDER BY TheDate DESC) AS TheDate
--Prepare the PIVOT query using the dynamic
SET @DynamicPivotQuery =
N'SELECT Area, ' + @ColumnName + '
FROM #staging
PIVOT(SUM(Val)
FOR TheDate IN (' + @ColumnName + ')) AS PVTTable'
--Execute the Dynamic Pivot Query
EXEC sp_executesql @DynamicPivotQuery
根据您的示例数据,一个区域的前6名对于每个区域都是相同的,因为区域是列名。有了这些信息,我们可以在原始轴之后使用动态取消pivot
declare @table table (TheDate date, abc int, def int, fgh int, ijk int, klp int)
insert into @table
values
('20170916',1,2,34,4,5),
('20170909',2,3,4,5,676),
('20170902',6,7,8,8,9)
DECLARE @DynamicPivotQuery AS NVARCHAR(MAX)
DECLARE @ColumnName AS NVARCHAR(MAX)
if object_id('tempdb..#staging') is not null drop table #staging
select
Area
,TheDate
,Val
into #staging
from @table
unpivot
(Val for Area in (abc,def,fgh,ijk,klp)
) up
--Get distinct values of the PIVOT Column / top 6 by date
SELECT @ColumnName= ISNULL(@ColumnName + ',','')
+ QUOTENAME(TheDate)
FROM (SELECT DISTINCT TOP 6 TheDate FROM #staging ORDER BY TheDate DESC) AS TheDate
--Prepare the PIVOT query using the dynamic
SET @DynamicPivotQuery =
N'SELECT Area, ' + @ColumnName + '
FROM #staging
PIVOT(SUM(Val)
FOR TheDate IN (' + @ColumnName + ')) AS PVTTable'
--Execute the Dynamic Pivot Query
EXEC sp_executesql @DynamicPivotQuery
每个区域最后6个还是最后6个?样本数据和预期输出会很好。是的,每个区域…添加了样本表,以及相同的预期结果。。提前感谢…每个区域最后6个还是最后6个?样本数据和预期输出会很好。是的,每个区域…添加了样本表,以及相同的预期结果。。先谢谢你。。。