Re: Extracting cross-version-upgrade knowledge from buildfarm client

Michael Paquier <michael@paquier.xyz> writes:
> On Sat, Jan 14, 2023 at 03:06:06PM -0500, Tom Lane wrote:
> +       # Can't upgrade aclitem in user tables from pre 16 to 16+.
> +       _add_st($result, 'regression',
> +               'alter table public.tab_core_types drop column aclitem');

> Could you just use a DO block here to detect tables with such
> attributes, like in upgrade_adapt.sql, rather than dropping the table
> from the core tests?  That's more consistent with the treatment of
> WITH OIDS.

I guess, but it seems like make-work as long as there's just the one
column.

> Is this module pluggable with 002_pg_upgrade.pl?

I did find that 002_pg_upgrade.pl could load it.  I got stuck at
the point of trying to test things, because I didn't understand
what the test process is supposed to be for an upgrade from a
back branch.  For some reason I thought that 002_pg_upgrade.pl
could automatically create the old regression database, but
now I see that's not implemented.

            regards, tom lane