Re: Small optimization set tuple block/tableOid once

From: David Rowley <dgrowleyml(at)gmail(dot)com>
To: Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>
Cc: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Small optimization set tuple block/tableOid once
Date: 2026-01-04 09:20:00
Message-ID: CAApHDvoAcEVUA9ybGRx2yQbz67pC9GUm1DsA6y0TpiSUzPd3mQ@mail.gmail.com
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On Thu, 3 Apr 2025 at 23:09, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com> wrote:
> rebased heapam.c and heapam_handler.c

This doesn't work. The tids are not being set in all cases.

patched:
select tableoid,ctid,oid from pg_class TABLESAMPLE BERNOULLI (100);
tableoid | ctid | oid
----------+---------+-------
1259 | (0,0) | 16409
1259 | (0,0) | 16403
1259 | (0,0) | 16412
1259 | (0,0) | 16407
1259 | (0,0) | 16415
1259 | (0,0) | 16418
1259 | (0,0) | 16434
...

master:
tableoid | ctid | oid
----------+---------+-------
1259 | (0,10) | 16409
1259 | (0,11) | 16403
1259 | (0,12) | 16412
1259 | (0,13) | 16407
1259 | (0,15) | 16415
1259 | (0,16) | 16418
1259 | (0,17) | 16434
...

David

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