So it's a clever hack that we used to allow the partial indexes to be used. It relied on the implicit assumption that min(x) and max(x) where the only values of x where NULL were both NULL.
It would be nice if we were clever enough to support *any* strict aggregate using partial indexes on WHERE NOT NULL since they'll all have that property. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
