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From: Greg Sabino Mullane <[email protected]>
To: Tom Lane <[email protected]>
Cc: Wizard Brony <[email protected]>
Cc: [email protected]
Subject: Re: Repeatable Read Isolation Level "transaction start time"
Date: Wed, 25 Sep 2024 13:22:31 -0400
Message-ID: <CAKAnmmLt2ezcf7-LgJkO_oeqK+Ei+XB6F3pHk2mnyadRq3corQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>

On Tue, Sep 24, 2024 at 10:28 AM Tom Lane <[email protected]> wrote:

> It's even looser than that, really: it's the first statement that
> requires an MVCC snapshot.


Hm....so why does "SELECT 1;" work as a transaction start marker then, as
opposed to "SHOW work_mem;", which does not? Do we simply consider anything
with a SELECT as needing a snapshot?

Cheers,
Greg

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