create table #t(Uname varchar(10),age int)insert #tselect '啊啊',19 union all select '信息',23 union all select '宝宝',31 union all select '喔喔',21 union all select '米米',6 select nnd as '年龄段',count(*) as '人数' from(select casewhen age>=1 and age<=10 then '1-10'when age>=11 and age<=20 then '11-20'when age>=21 and age<=30 then '21-30'when age>=31 and age<=40 then '31-40' end as nnd,uname from #t)a group by nnd
