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1：查询ID，根据时间

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select timestamp_to_scn(to_timestamp('2012-04-11 17:00:00','YYYY-MM-DD HH24:MI:SS'))? id ?from dual

2：根据ID找回数据

select * from 表名
AS OF SCN id
insert into xt_yh select * from 表名
AS OF SCN id

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