Check if date is greater than/less than

Question

to_char(to_date(A.PERMISSION_USE_DT, 'YYYY-MM-DD')) < to_char(to_date(sysdate, 'YYYY-MM-DD'))

A.PERMISSION_USE_DT is currently formatted as 04/12/2013 ; I would like to check and match if the date is older than the system date. How do I do this?

Answer 1

If A.Permission_Use_Dt is a date type, there's no need to do the TO_CHAR/TO_DATE conversions. Just do this:

A.Permission_Use_Dt < SYSDATE

Note that SYSDATE also has a time component, so it's today's date and time right now . To compare just the date part of the values, do this:

TRUNC(A.Permission_Use_Dt) < TRUNC(SYSDATE)