Re: alter table impact on view

A bit sad

Thanks..

Le lun. 30 janv. 2023 à 13:53, David Rowley <dgrowleyml(at)gmail(dot)com> a écrit :

> On Tue, 31 Jan 2023 at 01:14, Marc Millas <marc(dot)millas(at)mokadb(dot)com> wrote:
> > But if I alter table to change a column that is a varchar 20 into a
> varchar 21
> > postgres refuse saying that it cannot due to the return rule... using
> said column
> >
> > why ?? as the view is not a materialized object, the impact of the
> length of a column of an underlying table do change the description of the
> view, clearly, but I dont see where the difficulty is "hidden". Can someone
> enlighten me?
>
> Primarily because nobody has written the required code.
>
> In [1], which is now quite old, there was some discussion about
> various aspects of making this better. Perhaps changing the typmod is
> easier than changing the type completely, but we still don't have any
> code for it. So for now, you're just stuck manually dropping and
> recreating your views.
>
> David
>
> [1]
> https://www.postgresql.org/message-id/603c8f070807291912x37412373q7cd7dc36dd55a8a7@mail.gmail.com
>