Re: create or replace view

On Thu, 2002-11-14 at 11:17, snpe wrote:
> On Thursday 14 November 2002 02:41 pm, Bruno Wolff III wrote:
> > On Thu, Nov 14, 2002 at 13:41:18 +0000,
> >
> > snpe <snpe(at)snpe(dot)co(dot)yu> wrote:
> > > Hello,
> > > When I change view and change number of column PostgreSQL return error
> > > : 'cannot change number of column in view'
> > > Is it too hard set this command
> > > if view exits drop view
> > > and then change view
> > >
> > > It is like with return type in function
> > >
> > > Now 'or replace' don't help too much
> >
> > The create or replace command exists so that you can modify a view in a
> > way that allows other objects that refer to it to keep working (without
> > having to recreate those objects). However if you can the number of
> > columns (and probably any of their types), then these other objects
> > or going to need to know that things have changed so that you can't
> > just replace the view.
>
> I undestand that, but if I change number of column I want that
> 'create or replace view' do 'drop view ..; create view ..;'
> Why not ?

Now you've just broken all functions, views, rules, and triggers that
depend on that view to function.

--
Rod Taylor