龙元建设网站/百度推广怎么操作流程
查询其实也是个循环，简单的例子介绍
declare @Name varchar(120)
set @Name=''
select top 12 @Name=@Name+Column_Name from Sort
print @Name
查询其实也是个循环，简单的例子介绍
declare @Name varchar(120)
set @Name=''
select top 12 @Name=@Name+Column_Name from Sort
print @Name