数据库错误: [unknown column 'a.guid' in 'on clause'] select a.id,a.title,b.content,a.author,a.dttime from essj_list a join essj_list_content b on a.guid=b.guid where channelid=7 order by a.id desc limit 30
select a.id,a.title,b.content,a.author,a.dttime from essj_list a join essj_list_content b on a.guid=b.guid where channelid=7 order by a.id desc limit 30