TimeWithZone比较困难

Question

>> t = Time.zone.now; a = Account.create(:last_result_at => t); a.reload.last_result_at == t
=> false
>> t
=> Fri, 24 Jul 2009 21:52:16 UTC +00:00
>> a.last_result_at
=> Fri, 24 Jul 2009 21:52:16 UTC +00:00

是什么给出了？

Answer 1

在db

中存储时，usec组件被删除