1987年Galibert等首先报道：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24724' and id < 2117778 and id<>'2117778' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24724' and id > 2117778 and id<>'2117778' order by id asc limit 5