Re: Help with syntax for timestamp addition

> Just to add to the record, the mathematically sound way to write this
> query would be this:
>
> SELECT number
> FROM procedures
> WHERE date + numdays * interval '1 day' <= current_timestamp;


Thanks for that Peter!  That's a lot closer than what I originally
had...I didn't think about doing that but it makes sense.


Is there any advantage/disadvantages to using this method or the other?




On Mon, 2004-11-22 at 10:26, Peter Eisentraut wrote:
> Ian Barwick wrote:
> > On Mon, 22 Nov 2004 15:12:26 +0100, Patrick Fiche
> >
> > <patrick.fiche@aqsacom.com> wrote:
> > > Have a try at this syntax
> > >
> > > SELECT number
> > > FROM procedures
> > > WHERE date + CAST( numdays || ' days' AS interval ) <=
> > > CURRENT_TIMESTAMP;
> >
> > Just for the record you could write it like this too:
> >  SELECT number
> >  FROM procedures
> >  WHERE date + (numdays || ' days')::interval  <= CURRENT_TIMESTAMP;
>
> Just to add to the record, the mathematically sound way to write this
> query would be this:
>
> SELECT number
> FROM procedures
> WHERE date + numdays * interval '1 day' <= current_timestamp;
>
> --
> Peter Eisentraut
> http://developer.postgresql.org/~petere/