[英]SQL 2005 Merge / concatenate multiple rows to one column
我们有一点SQL quandry。 说我有一个看起来像这样的结果......
61E77D90-D53D-4E2E-A09E-9D6F012EB59C | 一个
61E77D90-D53D-4E2E-A09E-9D6F012EB59C | 乙
61E77D90-D53D-4E2E-A09E-9D6F012EB59C | C
61E77D90-D53D-4E2E-A09E-9D6F012EB59C | d
7ce953ca-a55b-4c55-a52c-9d6f012ea903 | Ë
7ce953ca-a55b-4c55-a52c-9d6f012ea903 | F
有没有办法我可以在SQL中将这些结果分组以返回为
61E77D90-D53D-4E2E-A09E-9D6F012EB59C | A B C D
7ce953ca-a55b-4c55-a52c-9d6f012ea903 | EF
人们有什么想法?
非常感谢
戴夫
试试这个:
set nocount on;
declare @t table (id char(36), x char(1))
insert into @t (id, x)
select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'A' union
select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'B' union
select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'C' union
select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'D' union
select '7ce953ca-a55b-4c55-a52c-9d6f012ea903' , 'E' union
select '7ce953ca-a55b-4c55-a52c-9d6f012ea903' , 'F'
set nocount off
SELECT p1.id,
stuff(
(SELECT
' ' + x
FROM @t p2
WHERE p2.id=p1.id
ORDER BY id, x
FOR XML PATH('')
)
,1,1, ''
) AS YourValues
FROM @t p1
GROUP BY id
OUTPUT:
id YourValues
------------------------------------ --------------
61E77D90-D53D-4E2E-A09E-9D6F012EB59C A B C D
7ce953ca-a55b-4c55-a52c-9d6f012ea903 E F
(2 row(s) affected)
编辑
根据OP关于需要运行现有查询的评论,试试这个:
;WITH YourBugQuery AS
(
--replace this with your own query
select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' AS ColID , 'A' AS ColX
union select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'B'
union select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'C'
union select '61E77D90-D53D-4E2E-A09E-9D6F012EB59C' , 'D'
union select '7ce953ca-a55b-4c55-a52c-9d6f012ea903' , 'E'
union select '7ce953ca-a55b-4c55-a52c-9d6f012ea903' , 'F'
)
SELECT p1.ColID,
stuff(
(SELECT
' ' + ColX
FROM YourBugQuery p2
WHERE p2.ColID=p1.ColID
ORDER BY ColID, ColX
FOR XML PATH('')
)
,1,1, ''
) AS YourValues
FROM YourBugQuery p1
GROUP BY ColID
这与上面显示的结果设置相同。
另一种方法是使用FOR XML PATH选项
SELECT
[ID],
(
SELECT
[Value] + ' '
FROM
[YourTable] [YourTable2]
WHERE
[YourTable2].[ID] = [YourTable].[ID]
ORDER BY
[Value]
FOR XML PATH('')
) [Values]
FROM
[YourTable]
GROUP BY
[YourTable].[ID]
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