从局部的微小变化测知整体情况，称为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31675' and id < 2535977 and id<>'2535977' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31675' and id > 2535977 and id<>'2535977' order by id asc limit 5