Re: why there is not VACUUM FULL CONCURRENTLY?

From: Michael Banck <mbanck(at)gmx(dot)net>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Antonin Houska <ah(at)cybertec(dot)at>, Junwang Zhao <zhjwpku(at)gmail(dot)com>, Kirill Reshke <reshkekirill(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: why there is not VACUUM FULL CONCURRENTLY?
Date: 2025-01-13 13:55:48
Message-ID: 67851b65.170a0220.2f4d00.41de@mx.google.com
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Hi,

On Sat, Jan 11, 2025 at 09:01:54AM -0500, Andrew Dunstan wrote:
> On 2025-01-09 Th 8:35 AM, Alvaro Herrera wrote:
> > Maybe we should have a new toplevel command. Some ideas that have been
> > thrown around:
> >
> > - RETABLE (it's like REINDEX, but for tables)
> > - ALTER TABLE <tab> SQUEEZE
> > - SQUEEZE <table>
> > - VACUUM (SQUEEZE)
> > - VACUUM (COMPACT)
> > - MAINTAIN <tab> COMPACT
> > - MAINTAIN <tab> SQUEEZE

I don't like any of them a lot :-/

> COMPACT tablename ...

That sounds like it would compress content rather than just rewrite it
normally to get rid of bloat.

I think REORG (or REPACK, but that has not history elsewhere) would fit
best, we don't need to emulate the myriad of DB2 options...

Michael

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