function to find last day of month

Hello

try:

CREATE OR REPLACE FUNCTION LastDateOfMonth(date) RETURNS date AS '
SELECT CAST(date_trunc(''month'', $1) + interval ''1 month''
- interval ''1 day'' as date);
' LANGUAGE sql;

Regards
Pavel

On Fri, 5 Dec 2003, Jennifer Lee wrote:

Hello,

Does anyone happen to have a function, prefereably in pl/pgsql, which
given the month and year will return the last day in that month?

Something like this might get you started:

CREATE OR REPLACE FUNCTION public.fom(date)
RETURNS date AS
'
SELECT COALESCE($1, CURRENT_DATE)-EXTRACT(DAY FROM COALESCE($1,
CURRENT_DATE))::INTEGER+1;
'
LANGUAGE 'sql' VOLATILE;

CREATE OR REPLACE FUNCTION public.lom(date)
RETURNS date AS
'
SELECT fom(date (COALESCE($1, CURRENT_DATE) + interval \'1 month\'))-1;
'
LANGUAGE 'sql' VOLATILE;

~Berend Tober

Thanks, and to everyone else who sent suggestions they were all
fantastic. I've got a working function now.

Cheers,
Jennifer

-----Original Message-----
From: Pavel Stehule [mailto:stehule@kix.fsv.cvut.cz]
Sent: Friday, December 05, 2003 1:05 PM
To: Jennifer Lee
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] function to find last day of month

Hello

try:

CREATE OR REPLACE FUNCTION LastDateOfMonth(date) RETURNS date AS '
SELECT CAST(date_trunc(''month'', $1) + interval ''1 month''
- interval ''1 day'' as date);
' LANGUAGE sql;

Regards
Pavel

On Fri, 5 Dec 2003, Jennifer Lee wrote:

Hello,

Does anyone happen to have a function, prefereably in pl/pgsql, which
given the month and year will return the last day in that month?

Thanks,
Jennifer

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