零地址运算指令在指令格式中不给出操作数地址，它的操作数来自 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29993' and id < 2430723 and id<>'2430723' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29993' and id > 2430723 and id<>'2430723' order by id asc limit 5