为使上述论证成立，以下哪项是必须假设的？

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25836' and id < 2170169 and id<>'2170169' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25836' and id > 2170169 and id<>'2170169' order by id asc limit 5