select extract(day
from(to_date('20130210000000', 'yyyymmddhh24miss') - sysdate)
day(9) to second) 天,
extract(hour
from(to_date('20130210000000', 'yyyymmddhh24miss') - sysdate)
day(9) to second) 時,
extract(minute
from(to_date('20130210000000', 'yyyymmddhh24miss') - sysdate)
day(9) to second) 分鐘,
extract(second
from(to_date('20130210000000', 'yyyymmddhh24miss') - sysdate)
day(9) to second) 秒
from dual
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