On 12 March 2014 21:30, Heikki Linnakangas <[email protected]> wrote: > Only WAL-log the modified portion in an UPDATE, if possible. > > When a row is updated, and the new tuple version is put on the same page as > the old one, only WAL-log the part of the new tuple that's not identical to > the old. This saves significantly on the amount of WAL that needs to be > written, in the common case that most fields are not modified. > > Amit Kapila, with a lot of back and forth with me, Robert Haas, and others.
Nice tight, useful patch. Very neat, well done all. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
