declare @t table (name varchar(2),tel int,time varchar(10))
insert into @t
select '张',133,'2010-2-2' union all
select '李',133,'2010-2-3' union all
select '黄',134,'2010-2-4' union all
select '张',135,'2010-2-5' union all
select '王',135,'2010-2-6'


select * from @t t where
time=(select max(time) from @t where tel=t.tel )
order by time desc
/*
name tel         time
---- ----------- ----------
王    135         2010-2-6
黄    134         2010-2-4
李    133         2010-2-3
*/