Re: MVCC snapshot timing

Bruce Momjian <bruce@momjian.us> writes:
> I received a private email report that our introductory MVCC
> documentation is unclear about when a snapshot is taken.  I have
> adjusted the wording in the attached patch to be less precise about
> snapshot timing. Snapshot timing is controlled by the session isolation
> level, which I don't think we want to cover in this introductory
> paragraph.

I'm not really seeing the point of s/transaction/session/ here.
The phrasing is a bit awkward and maybe could be improved, but I think you
should keep it referring to transactions.

            regards, tom lane