两列数据合并
A B
aa 11
bb 22

合并后的数据为 aa11,bb22 A表是varchar B表是int

[解决办法]
转个类型

SQL code

select wm_concat(to_char(A)||to_char(B)) c1from t1
[解决办法]
参考：
SQL code
if object_id('[tb]') is not null drop table [tb]gocreate table [tb] (code int,bill_code nvarchar(6))insert into [tb]select 4010305,'001' union allselect 4010305,'005' union allselect 4010306,'007' union allselect 4010307,'009' union allselect 4010305,'003'if object_id('dbo.f_str')is not null drop function dbo.f_strgoCREATE FUNCTION dbo.f_str(@code int)RETURNS varchar(8000)ASBEGIN    DECLARE @r varchar(8000)    SET @r = ''    SELECT @r = @r + ',' + bill_code    FROM tb    WHERE code=@code    RETURN STUFF(@r, 1, 1, '')ENDGOselect dbo.f_str(4010305)/*001,005,003(1 料列受到影)*/