| From: | Stephen Frost <sfrost(at)snowman(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Christoph Berg <myon(at)debian(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Surjective functional indexes |
| Date: | 2019-01-15 00:06:39 |
| Message-ID: | 20190115000639.GA2528@tamriel.snowman.net |
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| Lists: | pgsql-hackers |
Greetings,
* Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us) wrote:
> Andres Freund <andres(at)anarazel(dot)de> writes:
> > On 2019-01-14 18:53:02 -0500, Tom Lane wrote:
> >> But I suspect just doing the revert is already going to be painful
> >> enough :-(
>
> > I assume you're not particularly interested in doing that?
>
> No, I'm willing to do it, and will do so tomorrow if there haven't
> been objections.
>
> What I'm not willing to do is write hacks for pg_upgrade or pg_dump
> to mask cases where the option has been set on a v11 index. I judge
> that it's not worth the trouble. If someone else disagrees, they
> can do that work.
I'd love for there to be a better option beyond "just let people run the
pg_upgrade and have it fail half-way through"... Particularly after
someone's run the pg_upgrade check against the database...
If there isn't, then I'll write the code to add the check to pg_upgrade.
I'll also offer to add other such checks, if there's similar cases that
people are aware of.
Thanks,
Stephen
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