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求按天内去重后结果有一个表 A:表 A 结构及数据time_strremote_host2015-02-17 21:25:53112.142.97.542015-02-17 21:25:52128.9.1.22015-02-17 19:13:43133.09.12.382015-02-17 18:44:10128.9.1.22015-02-16 23:27:36136.22.15.992015-02-16 23:27:19136.22.15.992015-02-17 21:25:08128.9.1.22015-02-16 23:30:24136.22.15.992015-02-16 23:28:2644.52.142.72015-02-16 23:28:06112.142.97.542015-02-17 20:50:26133.09.12.382015-02-17 19:59:35112.142.97.542015-02-17 20:50:32133.09.12.382015-02-16 23:30:28136.22.15.992015-02-17 18:43:54133.09.12.382015-02-17 18:43:46112.142.97.542015-02-16 23:32:42112.142.97.542015-02-16 23:32:38127.09.18.
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