问题2:最有帮助的辅助检查是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25688' and id < 2159286 and id<>'2159286' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25688' and id > 2159286 and id<>'2159286' order by id asc limit 5