Request a Demo
Home   >   mailing lists

Re: Repeatable Read Isolation Level "transaction start time" - Mailing list pgsql-general

From Greg Sabino Mullane
Subject Re: Repeatable Read Isolation Level "transaction start time"
Date
Msg-id CAKAnmmLt2ezcf7-LgJkO_oeqK+Ei+XB6F3pHk2mnyadRq3corQ@mail.gmail.com
Whole thread Raw
In response to Re: Repeatable Read Isolation Level "transaction start time"  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Repeatable Read Isolation Level "transaction start time"
List pgsql-general
Tree view
On Tue, Sep 24, 2024 at 10:28 AM Tom Lane <tgl@sss.pgh.pa.us> 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

pgsql-general by date:

Previous
From: Adrian Klaver
Date:
Subject: Re: PgBackRest : Restore to a checkpoint shows further transactions
Next
From: Adrian Klaver
Date:
Subject: Re: Repeatable Read Isolation Level "transaction start time"