摘要：
create table tb(id int, value varchar(10)) insert into tb values(1, 'aa') insert into tb values(1, 'bb') insert into tb values(2, 'aaa') insert into tb values(2, 'bbb') insert into tb values(2, 'ccc') go create function [dbo].[f_str](@id int) returns nvarchar(1000) as begin declare @str nvarchar(100 阅读全文
