On Mon, Mar 14, 2011 at 10:25 AM, Alvaro Herrera <[email protected]> wrote: > Excerpts from Robert Haas's message of lun mar 14 11:18:24 -0300 2011: >> On Mon, Mar 14, 2011 at 10:09 AM, Alvaro Herrera >> <[email protected]> wrote: > >> > It sure would be nice to be able to do it only during the last scan. >> >> Does it really matter? What Tom was describing sounded embarassingly cheap. > > Well, you only do multiple passes for tables that are really large, so > it's precisely there that you want to save the extra overhead of having > to do it multiple times.
Right but if the overhead is 0.0001% then who cares? I have no idea what the real number is but it doesn't seem unrealistic to me that it could be on that order. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
