天:
ROUND(TO_NUMBER(END_DATE - START_DATE))
小时:
ROUND(TO_NUMBER(END_DATE - START_DATE) * 24)
分钟:
ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60)
秒:
ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60 * 60)
毫秒:
ROUND(TO_NUMBER(END_DATE - START_DATE) * 24 * 60 * 60 * 60)