Is this a TODO item?
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Bruno Wolff III wrote:
> On Sun, Aug 25, 2002 at 10:00:56 +1000,
> Martijn van Oosterhout <kleptog@svana.org> wrote:
> > On Sat, Aug 24, 2002 at 08:18:25PM +0500, Timur wrote:
> > > Hello!
> > >
> > > I am new to PostgreSQL and databases in general, and I have this
> > > question: why it is not possible to specify ordering when creating an
> > > index?
> > >
> > > Let's say I have a query which looks like this:
> > > SELECT * FROM table1
> > > ORDER BY field1, field2 DESC
> > > LIMIT 100;
> > >
> > > Apparently, system won't use index ON (field1, field2) ..
> >
> > It will if you do:
> > SELECT * FROM table1
> > ORDER BY field1 DESC, field2 DESC
> > LIMIT 100;
> >
> > Time to go read that SQL book again?
>
> That may or may not be his problem. If the order he wants is
> order by field1 ASC, fiels2 DESC there isn't a simple way to create
> a matching index.
>
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