-- 2959.38秒 SELECT TRUNC(2959.38 / 24 / 60, 0) || '天' || trunc((2959.38 - 60 * 24 * TRUNC(2959.38 / 24 / 60, 0)) / 60, 0) || '小时' || trunc(2959.38 - 60 * 24 * TRUNC(2959.38/ 24 / 60, 0) - 60 * trunc((2959.38 - 60 * 24 * TRUNC(2959.38/ 24 / 60, 0)) / 60, 0)) || '分钟' sumtime FROM DUAL;