Re: Days in month query

Hi,

Something like this?

SELECT date_part('day',
(date_part('year', '01/10/04' :: date) || '-' ||
date_part('month', '01/10/04' :: date) || '-01') ::date
+ '1 month'::interval
- '1 day'::interval) AS days;

Regards,

Arthur

On Wed, 30 Mar 2005 16:45:43 -0700, Mark Fox <mark(dot)fox(at)gmail(dot)com> wrote:
> Greetings,
>
> Thanks Dan, but I searched for, and scoured, that page before asking
> my question. It helped with some of the details, but not on the
> general approach. I'll try to restate my problem in a better way:
>
> What I want is SELECT statement that references no tables but returns
> the days in a given month. I'm now thinking that I might be able to
> come up with something using an IN clause and using EXTRACT, but
> haven't figured it out yet.
>
> Mark
>
>
> On Wed, 30 Mar 2005 15:16:19 -0800, Dann Corbit <DCorbit(at)connx(dot)com> wrote:
> > The online documentation has a search function. It would lead you to
> > this:
> > http://www.postgresql.org/docs/8.0/static/functions-datetime.html
> >
> > -----Original Message-----
> > From: pgsql-general-owner(at)postgresql(dot)org
> > [mailto:pgsql-general-owner(at)postgresql(dot)org] On Behalf Of Mark Fox
> > Sent: Wednesday, March 30, 2005 3:07 PM
> > To: pgsql-general(at)postgresql(dot)org
> > Subject: [GENERAL] Days in month query
> >
> > Greetings,
> >
> > This is more of an SQL question, but since each database server seems
> > to use it's own syntax for handling dates...
> >
> > Is there a way to query for the days in a month? For example,
> > querying for the days in January of this year? Listing the days
> > between two dates would be useful as well.
> >
> > I'm sure I saw a query like this somewhere, but I can't track it down.
> > Just to be clear, there were no tables involved. Just a SELECT
> > statement that returned all the days in a given month.
> >
> > Basically, I have a table of "events" and I'd like to generate a
> > histogram of how many events occur on the days of a particular month.
> > What I do now is create a temporary table, fill it with the
> > appropriate days, and then do a cross join and summation to generate
> > what I need. This works, but seems messy to me.
> >
> > Mark
> >
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