直观时运用变式方法的目的是（　）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='51381' and id < 3269667 and id<>'3269667' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='51381' and id > 3269667 and id<>'3269667' order by id asc limit 5