Re: pgsql: Add TID Range Scans to support efficient scanning ranges of TIDs

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: David Rowley <drowley(at)postgresql(dot)org>, pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: Re: pgsql: Add TID Range Scans to support efficient scanning ranges of TIDs
Date: 2021-03-01 18:07:24
Message-ID: 20210301180724.GA24763@alvherre.pgsql
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-committers

On 2021-Mar-01, Tom Lane wrote:

> Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> > On 2021-Feb-27, David Rowley wrote:
> >> Add TID Range Scans to support efficient scanning ranges of TIDs
>
> > Hmm, this seems to have missed a catversion bump, and we haven't had one
> > since it went in ...
>
> I've not read the patch in detail, but offhand I don't see why it would
> need a catversion bump. It doesn't look to have changed any persistent
> data structures.

Oh, so it appears you're right -- there are NodeTag renumberings but
those aren't stored anywhere.

--
Álvaro Herrera Valdivia, Chile
Bob [Floyd] used to say that he was planning to get a Ph.D. by the "green
stamp method," namely by saving envelopes addressed to him as 'Dr. Floyd'.
After collecting 500 such letters, he mused, a university somewhere in
Arizona would probably grant him a degree. (Don Knuth)

In response to

Browse pgsql-committers by date

  From Date Subject
Next Message Andres Freund 2021-03-01 19:42:41 pgsql: Fix recovery test hang in 021_row_visibility.pl on windows.
Previous Message Tom Lane 2021-03-01 17:55:59 Re: pgsql: Add TID Range Scans to support efficient scanning ranges of TIDs