Re: Support retrieving value from any sequence

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Thom Brown <thom(at)linux(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Support retrieving value from any sequence
Date: 2015-07-14 15:02:01
Message-ID: CAKFQuwa2opnEXjsPRbTZRP5TnnEh10GiDtHC0=AFS5fUyst0Lw@mail.gmail.com
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On Tue, Jul 14, 2015 at 10:52 AM, Thom Brown <thom(at)linux(dot)com> wrote:

> The use-case I have in mind is for finding out how close to the 32-bit
> integer limit sequences have reached. At the moment, this isn't possible
> without creating a custom function to go fetch the last_value from the
> specified sequence.
>
>
​Why wouldn't you just query the catalog?​ I was under the impression last
said values were extra-transactional so that table should reflect the
global state.

What am I missing here?

David J.

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