On Fri, Nov 13, 2009 at 7:54 AM, Heikki Linnakangas <heikki.linnakan...@enterprisedb.com> wrote: > Andrew Gierth wrote: >> Herewith a patch to implement agg(foo ORDER BY bar) with or without >> DISTINCT, etc. > > What does that mean? Aggregate functions are supposed to be commutative, > right?
We certainly have non-commutative agggregates currently, notably array_agg() I suspect it would be good to have a flag marking the commutative ones -- greg -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
