| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruno Wolff III <bruno(at)wolff(dot)to> |
| Cc: | Hadley Willan <hadley(dot)willan(at)deeperdesign(dot)co(dot)nz>, Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl>, PGSQL General <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Date manipulation |
| Date: | 2004-04-19 04:42:58 |
| Message-ID: | 15231.1082349778@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
Bruno Wolff III <bruno(at)wolff(dot)to> writes:
> Hadley Willan <hadley(dot)willan(at)deeperdesign(dot)co(dot)nz> wrote:
>> dateRange = ''now''::date - ( 7 * '1 week'::interval );
> If you actually are using a date you don't have to use an interval as
> the number subtracted will be in days. So you could just use
> current_date - (7 * 7);
Good point --- in fact, that's probably exactly what Hadley wants,
because "date - integer" will yield a date and not a timestamp. The
form involving interval will do odd things when crossing a DST
transition.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Hadley Willan | 2004-04-19 05:42:21 | Re: Date manipulation |
| Previous Message | Bruno Wolff III | 2004-04-19 03:27:48 | Re: Date manipulation |