On fre, 2009-11-13 at 10:01 -0500, Tom Lane wrote: > Peter Eisentraut <pete...@gmx.net> writes: > > On fre, 2009-11-13 at 03:16 +0000, Andrew Gierth wrote: > >> Caveat: as discussed earlier, this patch changes the behaviour of > >> array_agg(DISTINCT x) when applied to NULL inputs. Formerly, the NULLs > >> were unconditionally skipped; now, they are treated just like DISTINCT > >> or GROUP BY normally do. > > > The right answer to that should be in the SQL standard. > > It's not. The standard defines the behavior of certain specific > aggregates; it doesn't provide general rules that would apply to > user-defined aggregates.
But array_agg is in the standard. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
