select c.mac_key, d.`value` from equipment a inner join mac b on a.id = b.equipment_id inner join sensor c on b.sensor = c.id left join sensoradjust d on b.id = d.sen_dev_id where a.mac = #{0} UPDATE equipment SET state=#{1} WHERE mac=#{0} SELECT LAST_INSERT_ID() insert into history (mac, sensor, mac_key, mac_value, time) values ( #{item.mac}, #{item.sensor}, #{item.mac_key}, #{item.mac_value}, #{item.time} ) select mac from equipment select time from history where mac=#{0} order by time DESC limit 1