SELECT * FROM new_device ORDER BY id DESC SELECT * FROM new_device WHERE id = #{id} INSERT INTO new_device (model, location, ip, port, account, password, create_time, update_time) VALUES (#{model}, #{location}, #{ip}, #{port}, #{account}, #{password}, #{createTime}, #{updateTime}) UPDATE new_device SET id = #{id}, model = #{model}, location = #{location}, ip = #{ip}, port = #{port}, account = #{account}, password = #{password}, update_time = #{updateTime} WHERE id = #{id} DELETE FROM new_device WHERE id = #{id}