linn

 

 

SELECT TO_NUMBER(TO_DATE(\'2015-01-01 05:00:00\', \'YYYY-MM-DD HH24:MI:SS\') 
- TO_DATE(\'1970-01-01 8:0:0\', \'YYYY-MM-DD HH24:MI:SS\')) * 24 * 60 * 60 FROM DUAL;

 

秒转日期

SELECT TO_DATE(\'1970-1-1  8:0:0\',\'YYYY-MM-DD HH24:MI:SS\')+(1430020800/(3600*24))  FROM DUAL

 

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