Oracle获取当前Unix时间戳（秒）

SQL > SELECT ( to_date('2017-07-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss') - to_date('1970-1-1 8', 'yyyy-mm-dd hh24') ) * 86400 AS unix_timestamp FROM DUAL;

unix_timestamp

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1498838400