肖定点运算发生溢出时，应 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29993' and id < 2430711 and id<>'2430711' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29993' and id > 2430711 and id<>'2430711' order by id asc limit 5