Re: "xmin" system column

Hi,

On Thu, 26 Jan 2006, Eric B. Ridge wrote:
<snip/>
> <long pause>
>
> hahaha, *blush*.  I could just use "now()", right?  pg8.1 docs say that
> now()/CURRENT_TIMESTAMP "return the start time of the current transaction;
> their values do not change during the transaction".  I could use a composite
> of (now(), GetTopTransctionId()) to assume batch uniqueness.

Or use a touple of (now(), pg_backend_pid()) for this kind of stuff.
pg_backend_pid() should sufficiently disambiguate now() to make obove
touple unique.

Greetings
Christian

--
Christian Kratzer                       ck@cksoft.de
CK Software GmbH                        http://www.cksoft.de/
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