From: | Maarten Boekhold <maartenb(at)dutepp2(dot)et(dot)tudelft(dot)nl> |
---|---|
To: | Eric McKeown <ericm(at)palaver(dot)net> |
Cc: | PGsql <pgsql-sql(at)postgreSQL(dot)org> |
Subject: | Re: [SQL] this one's simpler |
Date: | 1998-08-25 07:40:58 |
Message-ID: | Pine.SUN.3.91.980825093939.865A-100000@dutepp2.et.tudelft.nl |
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Lists: | pgsql-sql |
On Mon, 24 Aug 1998, Eric McKeown wrote:
> Ok, I think this questions is a little bit easier. I have this piece of
> code:
>
> select (max(date_asked) - min(date_asked))::timespan from questions ;
>
> And it produces this output:
>
> timespan
> ------------------------------------
> @ 2334 days 13 hours 21 mins 45 secs
> (1 row)
>
> Now, what I'd really like is a way to format that output into months so
> that I could see the difference between the two dates in terms of months.
> Pointers??
Well, since not every month has the same number of days, and not every
*year* has the same number of days, I think this would only be possible
if you also give same starting date (ie min(date_asked)). I'd try to
write a C-function for this I guess.
Maarten
_____________________________________________________________________________
| TU Delft, The Netherlands, Faculty of Information Technology and Systems |
| Department of Electrical Engineering |
| Computer Architecture and Digital Technique section |
| M(dot)Boekhold(at)et(dot)tudelft(dot)nl |
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