ORACLE毫秒与日期的相互转换:SELECT TO_CHAR(1406538765000 / (1000 * 60 * 60 * 24) + TO_DATE('1970-01-01 08:00:00', 'YYYY-MM-DD HH:MI:SS'), 'YYYY-MM-DD HH24:MI:SS') AS CDATE FROM DUAL; 日期转换毫秒 1 2 3 SELECT TO_NUMBER(TO_DATE('2014-07-28 17:12:45', 'YYYY-MM-DD HH2 SELECT