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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;
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原文地址：http://www.cnblogs.com/dataclimber/p/5946766.html
