id,device_id,val, status,create_time INSERT INTO watch_third_bk_data id, device_id, val, status, create_time, #{data.id}, #{data.deviceId}, #{data.val}, #{data.status}, #{data.createTime}, SELECT COUNT(*) FROM watch_third_bk_data WHERE create_time = #{createTime} SELECT id, device_id, val, create_time FROM watch_third_bk_data WHERE device_id = #{deviceId} AND toDate(create_time) = #{date} ORDER BY create_time ASC SELECT FROM watch_third_bk_data WHERE device_id = #{deviceId} ORDER BY create_time DESC LIMIT 1