Re: Repeatable Read Isolation Level "transaction start time"

[Greg Sabino Mullane]

On Tue, Sep 24, 2024 at 10:28 AM Tom Lane <t...@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