On Tue, 2010-08-10 at 07:43 +0900, Itagaki Takahiro wrote: > 2010/8/10 Simon Riggs <si...@2ndquadrant.com>: > > Any SQL statement that reads a block can do HOT pruning, if the block is > > otherwise unlocked. > > We use the term "HOT" for two features: > 1. HOT updates: Avoiding index updates when keys are not modified. > 2. HOT pruning: Removing tuple bodies, that works even for indexed tuples. > > 2 is the point of the case, but ambiguous "HOT" might confuse some people.
Good point. We should say "HOT updates" and "pruning" as separate techniques. Itagaki invented the pruning technique and deserves much credit for that. -- Simon Riggs www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Training and Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
