On Fri, Aug 5, 2016 at 02:43:37PM -0300, Claudio Freire wrote: > But doing the WARM chain backtracking and checking for previous > versions with appropriate keys should be enough to support this use > case too, it just needs to be well optimized to avoid seriously > impacting performance on the average case.
Yes, that was an idea I had to --- if the in-page HOT chain already has the key, we know it is already in the index and we can skip the index addition. -- 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 (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers