On 20 June 2017 at 07:49, Tom Lane <t...@sss.pgh.pa.us> wrote: > I'm not totally satisfied that there isn't any case where the smallest > selectivity hack is appropriate. In the example you're showing here, > the FK columns are independent so that we get more or less the right > answer with or without the FK. But in some quick testing I could not > produce a counterexample proving that that heuristic is helpful; > so for now let's can it. > > Thanks, and sorry again for the delay.
Many thanks for taking the time on this. -- David Rowley http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers