Re: Statistics Import and Export

From: Corey Huinker <corey(dot)huinker(at)gmail(dot)com>
To: Jeff Davis <pgsql(at)j-davis(dot)com>
Cc: "Shinoda, Noriyoshi (SXD Japan FSIP)" <noriyoshi(dot)shinoda(at)hpe(dot)com>, jian he <jian(dot)universality(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "alvherre(at)alvh(dot)no-ip(dot)org" <alvherre(at)alvh(dot)no-ip(dot)org>
Subject: Re: Statistics Import and Export
Date: 2024-10-16 23:20:19
Message-ID: CADkLM=fajh1Lpcyr_XsMmq-9Z=SGk-u+_Zeac7Pt0RAN3uiVCg@mail.gmail.com
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>
> Code fix with comment on why nobody expects a relpages -1. Test case to
> demonstrate that relpages -1 can happen, and updated doc to reflect the new
> lower bound.
>

Additional fixes, now in a patch-set:

1. Allow relpages to be set to -1 (partitioned tables with partitions have
this value after ANALYZE).
2. Turn off autovacuum on tables (where possible) if they are going to be
the target of pg_set_relation_stats().
3. Allow pg_set_relation_stats to continue past an out-of-range detection
on one attribute, rather than immediately returning false.

Attachment Content-Type Size
v2-0001-Allow-pg_set_relation_stats-to-set-relpages-to-1.patch text/x-patch 5.2 KB
v2-0002-Turn-off-autovacuum-for-pg_set_relation_stats-tes.patch text/x-patch 2.9 KB
v2-0003-Allow-pg_set_relation_stats-to-continue-after-non.patch text/x-patch 3.1 KB

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