用in失败，可以用inner join代替。
use solardb;
select * from data as v
inner join
(
select distinct Timestamp from data order by unix_timestamp(str_to_date(Timestamp,"%d.%m.%Y %H:%i")) desc limit 10) as v2
on v.Timestamp = v2.Timestamp;
原文：http://www.cnblogs.com/dataclimber/p/5946766.html