Re: [SQL] this one's simpler

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.Boekhold@et.tudelft.nl                         |
-----------------------------------------------------------------------------