| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Andrei Lepikhov <lepihov(at)gmail(dot)com>, Alena Rybakina <a(dot)rybakina(at)postgrespro(dot)ru>, jian he <jian(dot)universality(at)gmail(dot)com>, Nikolay Shaplov <dhyan(at)nataraj(dot)su>, pgsql-hackers(at)lists(dot)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org, Marcos Pegoraro <marcos(at)f10(dot)com(dot)br>, teodor(at)sigaev(dot)ru, Peter Eisentraut <peter(at)eisentraut(dot)org>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> |
| Subject: | Re: POC, WIP: OR-clause support for indexes |
| Date: | 2024-10-07 16:12:04 |
| Message-ID: | CAH2-WzkN4iWyZtzVnnWkVXM1_DySb_t-g49sMnu3p5eprz+1+A@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Oct 7, 2024 at 12:02 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Oy. I don't agree with that *at all*. An "optimization" that changes
> query semantics is going to be widely seen as a bug.
I don't believe that I said otherwise?
It's just rather unclear what query semantics really mean here, in
detail. At least to me. But it's obvious that (for example) it would
not be acceptable if a cast were to visibly fail, where that hadn't
happened before.
--
Peter Geoghegan
| From | Date | Subject | |
|---|---|---|---|
| Next Message | jian he | 2024-10-07 16:17:11 | Re: Set query_id for query contained in utility statement |
| Previous Message | Peter Geoghegan | 2024-10-07 16:05:53 | Re: bt Scankey in another contradictory case |