How to get last day of a month

Question

using pl/sql
What i need is that all members whose birthdate is in the curren month will be included as having had their birthdate regardless of the date of the month. The code i have is:
Select me607.subscriber_id
me607.mbr_dob,
** trunc(months_between (*end of current month*,me607.mbr_dob) / 12) as age
from odw.mbr607_member_expanded me607
The asterixed line is what I need to change. If I put the end of the current month (where I put 'end of current month') then all those whose birthday month is in Feb will show as having had their birthdate. So if run today, folks whose birthdate is 26-feb-2005 will show an age of 5.
When grabbing the last day of the month using visual basic I just use the first day of the subsequent month minus 1. Any assistance is appreciated..

Answer 1

Hi,
This does what you requested:
Select  me607.subscriber_id,     -- Don't you need a comma here?
     me607.mbr_dob,
     ROUND ( MONTHS_BETWEEN ( SYSDATE
                            , me607.mbr_dob
           / 12
from    odw.mbr607_member_expanded     me607
WHERE     TO_CHAR (me607.mbr_dob, 'MONTH') =
     TO_CHAR (SYSDATE,      'MONTH')
;If this is run sometime in February, 2010, and mbr_dob is sometime in Febrary, 2005, then the result of MONTHS_BETWEEN will be between 59 and 61. When we divide by 12 convert that to years, that difference of up to one month becomes so small that it will be lost in the rounding.
If this isn't exactly what you need, tthen post a little sample data (CREATE TABLE and INSERT statements) and the results you want from that data.
Edited by: Frank Kulash on Feb 17, 2010 1:32 PM
Added explanation.