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/*如何将一列中所有的值一行显示
数据源
a
b
c
d
e
结果
a,b,c,d,e
*/
create table tb(col varchar(20))
insert tb values ('a')
insert tb values ('b')
insert tb values ('c')
insert tb values ('d')
insert tb values ('e')
go
--方法一
declare @sql varchar(1000)
set @sql = ''
select @sql = @sql + t.col + ',' from (select col from tb) as t
set @sql='select result = ''' + left(@sql , len(@sql) - 1) + ''''
exec(@sql)
/*
result
----------
a,b,c,d,e,
*/
--方法二
declare @output varchar(8000)
select @output = coalesce(@output + ',' , '') + col from tb
print @output
/*
a,b,c,d,e
*/
---方法三
declare @s varchar(1000)
select @s=isnull(@s+',' , '')+col from tb
select @s
/*
a,b,c,d,e
*/
drop table tb
-------------
declare @T table([A] int)
Insert @T
select 1 union all
select 2 union all
select 3
SELECT STUFF((Select '/'+RTRIM([A]) from @T FOR XML PATH('')),1,1,'')
/*
1/2/3*/
declare @s nvarchar(max)
select @s=isnull(@s+'/','')+rtrim(A) from table1
print @s
declare @s nvarchar(max)
select @s=isnull(@s+'/','')+A from table1
print @s