Re: Last day of month
| От | Michael Chaney |
|---|---|
| Тема | Re: Last day of month |
| Дата | |
| Msg-id | 20040226163702.GC22092@michaelchaney.com обсуждение исходный текст |
| Ответ на | Re: Last day of month ("Greg Sabino Mullane" <greg@turnstep.com>) |
| Список | pgsql-sql |
On Thu, Feb 26, 2004 at 03:07:52AM -0000, Greg Sabino Mullane wrote:
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> > How to find the last sunday/mon..../sat of any given month.
>
> There is probably a smoother way to do it, but here is a
> quick little function to do what you ask. Feed it a date
> and a number, where 0 is Sunday, 1 is Monday, etc.
select date_trunc('month', current_date + '1 month'::interval) - '1 day'::interval + (((3 - 7 -
to_char(date_trunc('month',current_date + '1 month'::interval) - '1 day'::interval,'D')::int) %7)||'
days')::interval;
The "3" is the day of week (1 = Sunday, 7 = Saturday). This equation
will return the date of the last "x" of the current month. Change
"current_date" to be whatever date you wish to find the last "x" of.
Michael
--
Michael Darrin Chaney
mdchaney@michaelchaney.com
http://www.michaelchaney.com/
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