关于前列腺，错误的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31775' and id < 2540491 and id<>'2540491' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31775' and id > 2540491 and id<>'2540491' order by id asc limit 5