Re: create or replace view

On Thursday 14 November 2002 04:38 pm, Rod Taylor wrote:
> 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@snpe.co.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.
But I can simple:
drop view view_name;
create view view_name ...;

I want that 'create or replace view' work drop-create if view exists else only 
create

regards
Haris Peco