Comments on: Are you really 18 years old today?

by: HunterX

Wed, 26 Mar 2008 08:22:29 +0000

:-)

by: Laurent Schneider

Tue, 04 Mar 2008 12:14:26 +0000

of course my comment is not very accurate… I mean if you are born 29-feb-1992 you will not be 18 on feb-28-2010 but one day later

by: Laurent Schneider

Fri, 29 Feb 2008 13:07:27 +0000

not sure if you can enter the party when born 29-FEB-1991 next year before 1st march… depends on the bodyguard

by: HunterX

Fri, 29 Feb 2008 10:11:03 +0000

OK!
I can watch adult movie or drink Gin-tonic.

create function add_mon (date1 IN DATE,add_mon IN NUMBER) return DATE IS loc_date2 date;

BEGIN
loc_date2:= ADD_MONTHS(date1-1,add_mon);

IF LAST_DAY(date1) = date1
THEN
IF LAST_DAY(loc_date2)=loc_date2
THEN
RETURN loc_date2;
ELSE
RETURN loc_date2 +1;
END IF;
ELSE
RETURN ADD_MONTHS(date1,add_mon);
END IF;

END;
/

SQL> l
1 declare
2 a date;
3 begin
4 a := add_mon (to_date(’1990-02-28′,’YYYY-MM-DD’),18*12);
5 dbms_output.put_line(a);
6* end;
SQL> /
28-FEB-08

by: Anonymous

Fri, 29 Feb 2008 09:11:44 +0000

If I was born Feb 28, 1990. Today is my birth day for 18 years old.

ADD_MONTH
———
27-FEB-08

SQL> select add_months(date ‘1990-02-28′,18*12) from dual;

ADD_MONTH
———
29-FEB-08

by: Laurent Schneider

Thu, 28 Feb 2008 18:37:45 +0000

nothing unexpected if you read the doc before using add_months

by: radino

Thu, 28 Feb 2008 18:31:43 +0000

nothing unexpected..

doc:
If date is the last day of the month or if the resulting month has fewer days than the day component of date, then the result is the last day of the resulting month.

by: Laurent Schneider

Thu, 28 Feb 2008 17:19:15 +0000

Hi Claudia,
No, I did not know the Pirates of Penzance.
I have an uncle who is celebrating his 18th birthday tomorrow… since his father reached its 101st I would not be surprised he will reach 21st.
:)
Laurent

by: Claudia Zeiler

Thu, 28 Feb 2008 17:11:12 +0000

Hi Laurent,
The person born Feb 29, 1992 acquires the day the the one born Feb 28, 1990 lost.

1* select add_months(date ‘1992-02-29′,18*12) from dual
SQL> /

ADD_MONTH
———
28-FEB-10

By the way, do you know “The Pirates of Penzance”? The whole plot turns around the hero who was indentured to pirates until his 21st birthday. BUT he was born Feb 29. No one ever claimed that Gilbert and Sullivan make sense. )
-Claudia