I notice that there isn't a parameter called enable_indexonly (or similar).
ISTM that such a major new feature should be controlled by a planner method parameter, just as all the existing planner methods are. This will help us evaluate index only scans in production, and turn them off if they have negative impacts. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
