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From: Ron Johnson <[email protected]>
To: [email protected] <[email protected]>
Subject: Re: Suggestion for Easier Cross-Database Query Handling in PostgreSQL
Date: Fri, 15 May 2026 19:57:45 -0400
Message-ID: <CANzqJaDqtavaNgnwNHHqa-HJcMhBhhKDk75UxnuyPXp4gnHKdA@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CAHWFTRjCy3U30whQJBw8z5_8boq=V9MzbtHMh6HZVP3o-OaGxg@mail.gmail.com>
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	<[email protected]>

On Fri, May 15, 2026 at 7:22 PM Tom Lane <[email protected]> wrote:

> Ron Johnson <[email protected]> writes:
> > Why doesn't the shared OID space make cross-database queries possible?
>
> OIDs are not guaranteed unique across databases.


Ah.


> But totally independently of implementation considerations, it's not
> apparent to me that this would be a good idea.  As Frank mentioned,
> Postgres has always treated databases as isolation boundaries.
> Changing that would probably break a lot of peoples' installation
> designs.
>

Even now, roles need privilege to access databases.

-- 
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!


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