Robert Treat <xzilla@users.sourceforge.net> writes:
> On Wednesday 05 September 2007 18:40, Tom Lane wrote:
>> I don't see why you wouldn't start using the VXID for this purpose?

> I'm not sure either :-) Though, it would be nice to have an easy way to see
> which transactions actually modified tables.

Moving the goal posts, aren't we? It was not possible to find that out
at all from the pg_locks view before. (Well, you could guess based on
the type of table locks held, but you were only guessing.)

As of CVS HEAD you *can* determine that from pg_locks, to high
probability anyway, by looking to see which VXIDs have transaction IDs
locked.

regards, tom lane

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