On Thu, Aug 4, 2016 at 01:16:20AM +0100, Simon Riggs wrote:
> > Would you only add a LITE index entry when there isn't an
> > existing index entry for the same values and heap page? That seems
> > quite complicated.
>
> The insertion algorithm is described. Doesn't seem complicated to me.
Ah, I see it now:
As UPDATEs occur we request inserts into the index. If a lossy index
pointer already exists that covers the new linepointer then we skip
the index insert, optimizing writes to the index.
I thought you meant "already exists" just means it matches the existing
range. I was unclear that was the entire page.
--
Bruce Momjian <br...@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
