id ,name,code,user,phone,depart_id,state,create_time SELECT ht.*,IF(p.depart_name is null ,'',d.depart_name) depart_name,IFNULL(p.depart_name,d.depart_name) p_depart_name FROM ums_equipment_handheld_terminal ht LEFT JOIN ums_depart d on ht.depart_id = d.id LEFT JOIN ums_depart p on d.parent_id = p.id ht.state = #{state} order by ht.id desc