Re: AS OF queries

On Fri, Dec 22, 2017 at 11:08:02PM +0000, Greg Stark wrote:
> On 20 December 2017 at 12:45, Konstantin Knizhnik
> <k(dot)knizhnik(at)postgrespro(dot)ru> wrote:
>
> > It seems to me that it will be not so difficult to implement them in
> > Postgres - we already have versions of tuples.
> > Looks like we only need to do three things:
> > 1. Disable autovacuum (autovacuum = off)
>
> "The Wheel of Time turns, and Ages come and pass, leaving memories
> that become legend. Legend fades to myth, and even myth is long
> forgotten when the Age that gave it birth comes again"

I would be amazed if you have been able to finish the 14 volumes of the
series. There is a lot of content to take.

> Postgres used to have time travel. I think it's come up more than once
> in the pasts as something that can probably never come back due to
> other decisions made. If more decisions have made it possible again
> that will be fascinating.

This subject is showing up a couple of times lately, things would
be interested to see. What I am sure about is that people are not
willing to emulate that with triggers and two extra columns per table.
--
Michael