/*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
select cid=stuff((select ','+cid from R for xml path('')),1,1,'')
--1 declare @s varchar(1000) select @s=isnull(@s+',','')+Cid from E where Pid=(select id from R where [name]='水果') select @s--2 select stuff((select ','+Cid from E where Pid=(select id from R where [name]='水果') for xml path('')),1,1,'')
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
declare @s varchar(1000)
select @s=isnull(@s+',','')+Cid from E where Pid=(select id from R where [name]='水果')
select @s--2
select stuff((select ','+Cid from E where Pid=(select id from R where [name]='水果') for xml path('')),1,1,'')