mansai的专栏

例如下图：a组可能是3行，b组2行,c组5行 declare @t table ( id int, groups varchar(max), Name varchar(max) ); insert into @t select 1,'a','分类a1' union all select 2,'a','分类a2' union all select 3,'a','分类a3' union all select 4,'b','分类b1' union all select 5,'b','分类b2' unio..