What is the purpose of this letter?

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27942' and id < 2294107 and id<>'2294107' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27942' and id > 2294107 and id<>'2294107' order by id asc limit 5