與UNPIVOT列表中指定的其他列的類型衝突

有人可以幫助我解決此問題嗎？我收到一個錯誤說與UNPIVOT列表中指定的其他列的類型衝突

與其他列在UNPIVOT列表

我試圖名稱轉換爲varchar指定類型的類型列「名」的衝突，但沒有工作。

;with hd (id, name, parentid, category) 
as 
(
    select CAPABILITY_COMPONENT_ID id, CAPABILITY_COMPONENT_NAME name, CAPABILITY_PARENT_ID as parentid, 1 as category 
    from [dbo].[TDM_FCT_CPBLITY] 
    where CAPABILITY_PARENT_ID = -1 
    union all 
    select t1.CAPABILITY_COMPONENT_ID, t1.CAPABILITY_COMPONENT_NAME, t1.CAPABILITY_PARENT_ID, hd.category +1 
    from [dbo].[TDM_FCT_CPBLITY] t1 
    inner join hd 
    on t1.CAPABILITY_PARENT_ID = hd.id 
) 
select category categoryNumber 
into #temp 
from hd 

DECLARE @cols AS NVARCHAR(MAX), 
    @query AS NVARCHAR(MAX) 

select @cols = STUFF((SELECT distinct ',' + quotename('cat_'+cast(categoryNumber as varchar(10))+'_'+col) 
        from #temp 
        cross apply (select 'id' col 
           union all 
           select 'name' col) src 
      FOR XML PATH(''), TYPE 
      ).value('.', 'NVARCHAR(MAX)') 
     ,1,1,'') 

set @query = ';with hd (id, name, parentid, category) 
       as 
       (
       select CAPABILITY_COMPONENT_ID as id, CAPABILITY_COMPONENT_NAME as name, CAPABILITY_PARENT_ID as parentid, 1 as category 
       from [dbo].[TDM_FCT_CPBLITY] 
       where CAPABILITY_PARENT_ID = -1 
       union all 
       select t1.CAPABILITY_COMPONENT_ID, t1.CAPABILITY_COMPONENT_NAME, t1.CAPABILITY_PARENT_ID, hd.category +1 
       from [dbo].[TDM_FCT_CPBLITY] t1 
       inner join hd 
        on t1.CAPABILITY_PARENT_ID = hd.id 
      ), 
       unpiv as 
       (
       select value, ''cat_''+cast(category as varchar(5))+''_''+ col col_name 
       from 
       (
        select cast(id as varchar(17)) id, name, parentid, category     
        from hd 
       ) src 
       unpivot 
       (
        value for col in (id, name) 
       ) un 
      ) 
       select '[email protected]+' 
       from unpiv 
       pivot 
       (
       max(value) 
       for col_name in ('[email protected]+') 
       ) piv' 

execute(@query) 

drop table #temp

來源

2016-12-07 Roi Samagoue

downvotes和/或關閉請求的一個原因可能是，那*爲什麼我的代碼不工作？*被明確地命名爲第一點* *什麼是不是** SO * [查看詳細信息]（http ：//stackoverflow.com/help/on-topic） – Shnugo

你可以添加CREATE TABLE語句和一些插入值嗎？ – McNets

我可以建議你只顯示最後的@query語句，不加引號嗎？ – McNets

UNPIVOT不是反轉數據的最佳方式。

將代碼中的UNPIVOT部分替換爲「CROSS APPLY WITH VALUES」，這是一種好得多的方法，它的實現效率更高，實現也更簡單。

來源

2016-12-07 22:55:15 pacreely

與UNPIVOT列表中指定的其他列的類型衝突

回答

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