优先权是在创建进程时确定的，确定之后在整个进程运行期间不再改变。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id < 2440253 and id<>'2440253' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id > 2440253 and id<>'2440253' order by id asc limit 5