Message-ID: <f36f10b8e9e7ebd00ed32fc713d29c38a6c8f04a.camel@cybertec.at>
Subject: Re: Best Approach for Swapping a Table with its Copy
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Marcelo Fernandes <marcefern7@gmail.com>, Adrian Klaver
	 <adrian.klaver@aklaver.com>
Cc: pgsql-general@lists.postgresql.org
Date: Thu, 13 Feb 2025 07:37:50 +0100
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On Thu, 2025-02-13 at 11:04 +1300, Marcelo Fernandes wrote:
> > I am not seeing how this can be done without some outage for that table.
> 
> Swapping tables without an outage is possible.

Yes, but only if you are willing to write C code that runs inside the
database server.  That way, you can do anything (and cause arbitrary
damage).

The big challenge here would be to do the swap in a safe way.  How do
you intend to guarantee that the foreign keys are valid without a table
scan?  How do you handle concurrent data modifications?

Yours,
Laurenz Albe

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