Getting time interval in seconds

Question

How do I get the time interval between two date ( i.e to_date - from_date) in seconds ? The date range can span across several days , even months . I need to order the rows according to this interval, hence able to get the difference in seconds will help.

Answer 1

This information can be useful for you :
MONTHS_BETWEEN returns number of months between dates date1 and date2. If date1 is later than date2, then the result is positive. If date1 is earlier than date2, then the result is negative. If date1 and date2 are either the same days of the month or both last days of months, then the result is always an integer. Otherwise Oracle calculates the fractional portion of the result based on a 31-day month and considers the difference in time components date1 and date2.
Examples
The following example calculates the months between two dates:
SELECT MONTHS_BETWEEN
(TO_DATE('02-02-1995','MM-DD-YYYY'),
TO_DATE('01-01-1995','MM-DD-YYYY') ) "Months"
FROM DUAL;
Months
1.03225806
Joel P�rez