On Wed, Feb 28, 2024 at 5:59 PM Laurenz Albe <laurenz.albe@xxxxxxxxxxx> wrote:
On Wed, 2024-02-28 at 16:09 +0100, Dominique Devienne wrote:
> From https://www.postgresql.org/docs/16/ddl-generated-columns.html:
> > PostgreSQL currently implements only stored generated columns
>
> We use generated columns extensively.
> And we have foreign-keys attached to those generated columns.
> The fact they are always Stored thus wastes space in our case.
> Any chance PostgreSQL might gain actual virtual / non-stored generated columns soon? Ever?
>
> For reference, both Oracle and SQLite have virtual / non-stored columns.
> And both support FKs and indexes on those too.
> Would be great to have feature parity on this particular point, eventually.
Isn't almost all of that functionality covered by a view?
Views can have foreign-keys?
Generated view columns be indexed? (for efficient CASCADE of the FKs)
AFAIK, no. Plus that would double the relations in schemas too. --DD
