On Tuesday 12 March 2002 18:19, Gary Stainburn wrote:
> On Tuesday 12 March 2002 1:25 pm, Ian Barwick wrote:
> > On Tuesday 12 March 2002 13:17, Gary Stainburn wrote:
> > > Hi all,
> > >
> > > I'm trying to use a select to get the latest item of news, provided
> > > that it's within the last X days. What do I need to add to the where
> > > clause for the select statement below:
> > >
> > > select ndate, nauthor, nheading
> > > from news
> > > order by ndate desc
> > > limit 1
> > > *** where ndate within the last 3 months ******
> > > ;
> >
> > something like:
> >
> > where ndate > current_timestamp - interval '3 months'
> >
> > more on the subject here:
> >
> > http://techdocs.postgresql.org/techdocs/faqdatesintervals.php
> >
> > Ian Barwick
>
> Thanks for that Ian, worked a treat. However, can someone tell me why
>
> select n.ntimestamp, n.nmid from news n where n.ntimestamp > current_time -
> interval '5 minutes';
>
> works while
>
> select n.ntimestamp, n.nmid, m.mfname, m.mlname
> from news n, members m
> order by ntimestamp desc
> limit 1
> where (n.nmid = m.mid) and
> (n.ntimestamp > current_time - interval '5 minutes');
>
> has a parse error at or near "where"
select n.ntimestamp, n.nmid, m.mfname, m.mlname from news n, members m where (n.nmid = m.mid) and (n.ntimestamp >
current_time- interval '5 minutes') order by ntimestamp desc limit 1
should work...
Ian Barwick
