操作数据库失败Unknown column 'm.paixu' in 'order clause'
sql:select m.*,f.* from sfo_maintb as m left join sfo_test as f on f.id = m.id where m.id=f.id and m.verify=0 and m.category in (618) and m.lang='cn' order by f.paixu*1 asc,m.paixu desc limit 0,30

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