Re: unlogged sequences

On Fri, Apr 1, 2022 at 12:31 PM Peter Eisentraut
<peter.eisentraut@enterprisedb.com> wrote:
> > An "internal" dependency means that the internal object shouldn't really
> > be operated on directly.  (In some cases it's allowed for convenience.)
> > So I think in that case the sequence must follow the table's persistence
> > in all cases.  This is accomplished by setting the initial persistence
> > to the table's, making ALTER TABLE propagate persistence changes, and
> > prohibiting direct ALTER SEQUENCE SET.
>
> But to make pg_upgrade work for identity sequences of unlogged tables,
> we need to allow ALTER SEQUENCE ... SET LOGGED on such sequences.  Which
> I guess is not a real problem in the end.

And I think also SET UNLOGGED, since it would be weird IMHO to make
such a change irreversible.

-- 
Robert Haas
EDB: http://www.enterprisedb.com