请教sql字符串相加
请教sql字符串相加

表

ID,Name
1 中
2 国
3 人
4 民

求一条SQL语句

查询出的结果是：中+国+人+民

越简单语句越好，千万不要写的太复杂。就一条语句，让SQL输出成上面的结果。
谢谢！

[解决办法]

SQL code

declare @tb table(id int identity(1,1) not null,name nvarchar(5))insert into @tb values('中'),('国'),('人'),('民')declare @str varchar(50) set @str=''select  @str=@str+'+'+ name from @tbselect RIGHT(@str,LEN(@str)-1 )  --------------------------------------------------中+国+人+民(1 行受影响)
[解决办法]
----------------------------------------------------
/*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
[解决办法]
SQL code
WITH #001AS(SELECT 1 AS id,'中' AS id_name UNION ALLSELECT 2 AS id,'国' AS id_name UNION ALLSELECT 3 AS id,'人' AS id_name UNION ALLSELECT 4 AS id,'民' AS id_name )SELECT [拼接] = STUFF(( SELECT   '+' + [id_name]                        FROM     #001 ORDER BY id                      FOR                       XML PATH('')                     ), 1, 1, '')  --输出:拼接中+国+人+民(1 行受影响)
[解决办法]
SQL code
WITH #001AS(SELECT 1 AS id,'中' AS id_name UNION ALLSELECT 2 AS id,'国' AS id_name UNION ALLSELECT 3 AS id,'人' AS id_name UNION ALLSELECT 4 AS id,'民' AS id_name )SELECT [拼接] = STUFF(( SELECT   '+' + [id_name]                        FROM     #001 ORDER BY id                      FOR                       XML PATH('')                     ), 1, 1, '')  --结果：拼接中+国+人+民(1 行受影响)