摘要： 注:sqlserver下create table test(areaid int,score int)insert into test select 0,10union all select 0,20union all select 0,30union all select 0,40union all select 0,50union all select 1,10union all select 1,20union all select 1,30union all select 1,40union all select 1,50union all select 2,10union all s 阅读全文