declare @temp varchar(1000) set @temp = '' select @temp = @temp + id from tablename order by id desc select @temp
/*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 */drop table tb
create table tb(id int) insert into tb select 1 union all select 2 union select 3 union select 4 union select 5 go select stuff(( select ','+convert(varchar,id) from tb for xml path('') ),1,1,'') go drop table tb /* --------------------------------------------------------------------------------- 1,2,3,4,5*/
set @temp = ''
select @temp = @temp + id
from tablename
order by id desc
select @temp
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
*/drop table tb
insert into tb select 1 union all select 2 union select 3 union select 4 union select 5
go
select stuff((
select ','+convert(varchar,id) from tb for xml path('')
),1,1,'')
go
drop table tb
/*
---------------------------------------------------------------------------------
1,2,3,4,5*/