Oracle时间戳（毫秒）转为Date

SELECT TO_CHAR(1112070645000 / (1000 * 60 * 60 * 24) +  
       TO_DATE('1970-01-01 08:00:00', 'YYYY-MM-DD HH:MI:SS'), 'YYYY-MM-DD HH:MI:SS') AS CDATE  
FROM PDA_ORDER t;