Nathan Bossart <nathandbossart@gmail.com> writes:
> On Thu, Dec 29, 2022 at 03:29:15PM -0500, Tom Lane wrote:
>> I tried to make a patch along these lines, and soon hit a stumbling
>> block: ONLY is a fully-reserved SQL keyword. I don't think this
>> syntax is attractive enough to justify requiring people to
>> double-quote the option, so we are back to square one. Anybody
>> have a different suggestion?
> ... adding both SKIP_DATABASE_STATS and ONLY_DATABASE_STATS might be the
> best bet.
Nobody has proposed a different bikeshed color, so I'm going to
proceed with that syntax. I'll incorporate the parallel-machinery
fix from your patch and push to HEAD only (since it's hard to argue
this isn't a new feature).
This needn't foreclose pursuing the various ideas about making
vac_update_datfrozenxid faster; but none of those would eliminate
the fundamental O(N^2) issue AFAICS.
regards, tom lane