观察下图，这幅漫画反映的本质问题是(  )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19914' and id < 1729644 and id<>'1729644' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='19914' and id > 1729644 and id<>'1729644' order by id asc limit 5