>>>>> "David" == David G Johnston <david.g.johns...@gmail.com> writes:
>> 1. x IS NULL is true if and only if x has the null value (isnull set). David> I don't have a problem conforming to "ROW(NULL, NULL) IS NULL" David> being true...if you somehow get a hold of something in that David> form, which your others points address. This seems harmless, but I think it's not worth the pain. I'm informed that for example on Oracle: select case when foo_type(null, null) is null then 'true' else 'false' end from dual; returns 'false'. -- Andrew (irc:RhodiumToad) -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers