下列变量名中不合法的是（　　）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57993' and id < 3664292 and id<>'3664292' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='57993' and id > 3664292 and id<>'3664292' order by id asc limit 5