处方正文中的B. p代表什么

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30785' and id < 2479143 and id<>'2479143' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30785' and id > 2479143 and id<>'2479143' order by id asc limit 5