判断一种行为是否正常，首先必须考虑以下哪个要素（    ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27169' and id < 2250993 and id<>'2250993' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27169' and id > 2250993 and id<>'2250993' order by id asc limit 5