select sysdate, (sysdate- to_date('1970-01-01','yyyy-mm-dd'))* 24*60*60*1000 current_milli from dual; --2011-10-27 11:21:55 select to_date('1970-01-01 00:00:00','yyyy-mm-dd hh24:mi:ss') + 1319714515000/1000/24/60/60 from dual
sysdate与long类型互转
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