Re: [PATCH] Lazy xid assingment V2

[Alvaro Herrera <alvherre(at)commandprompt(dot)com>]

Tom Lane wrote:

> I note that pg_description defines xid_age as "age of a transaction ID,
> in transactions before current transaction", and I'm content to stick
> with that definition.  Even if it does force consuming an XID.  I'm not
> sure that we could devise a comparably succinct description of any of
> these other proposed behaviors, nor that we should even consider
> changing that description.

Hmm, what happens if somebody calls 
select age(xmin) from bigtable
?

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.