Re: CREATE SYNONYM ...

On Tue, 7 Mar 2006, Jim C. Nasby wrote:

> On Tue, Mar 07, 2006 at 12:39:55PM -0800, Stephan Szabo wrote:
> >
> > On Tue, 7 Mar 2006, Jonah H. Harris wrote:
> >
> > > On 3/7/06, Stephan Szabo <sszabo@megazone.bigpanda.com> wrote:
> > > >
> > > > I'd personally be more interested in what the impact is on people not
> > > > using synonyms. How free is any search for synonyms if you aren't using
> > > > the feature?
> > >
> > >
> > > Unless synonym enablement were a configurable parameter (which wouldn't
> > > really make sense), the cost would be the same whether they're used or not
> > > during searching.
> >
> > Right, but the response was that "using" synonyms incurred a cost and this
> > should be documented.  However, if there's a cost to people not using
> > synonyms there's a higher barrier to entry for the feature.
>
> Wouldn't the cost only be incurred if you searched for something in
> pg_class that wasn't there, and therefor had to fall back to pg_synonym?

I think if synonyms were search path dependant that wouldn't be true since
you'd need to know if there was a synonym that shadowed another item.