sql中合并列方法
方法一:創(chuàng)建合并列函數(shù)
-------創(chuàng)建一個(gè)方法----------
CREATE FUNCTION dbo.Role_Name(@AdminID int)
return varchar(8000)
AS
BEGIN
DECLARE @r varchar(8000)
SET @r = ''
SELECT @r = @r + '/' +Role
FROM (select a.AdminID,d.Role from r b inner join PA a on a.RenShiID=b.id
inner join Role c on a.AdminID=c.adminID inner join role d on d.ID=c.RoleID )t
WHERE AdminID=@AdminID
RETURN STUFF(@r, 1, 1, '')
END
--調(diào)用合并列函數(shù)---
dbo.Role_Name(1)
--刪除合并列函數(shù)--
drop function dbo.Role_Name
方法二:xml path()方法在05之后可用
select id,stuff((select '-' + convert(varchar(4),value)from tb where id=A.id order by id for xml path('')),1,1,'')
as values
from tb A
group by id
select top 10 a.ID,a.customerName,a.guideType
,(stuff((select ',' + guideLine from Line where CHARINDEX(cast(id as varchar),a.guideType)>0 for xml path('')),1,1,''))
from callIn as a order by ID desc
總結(jié)
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