On Wed, Sep 4, 2013 at 9:26 PM, Bruce Momjian <br...@momjian.us> wrote: > On Tue, Sep 3, 2013 at 09:32:44PM -0400, Bruce Momjian wrote: >> In this test, SELECT NULL (which internally would produce SELECT >> ROW(NULL)), returns TRUE, while SELECT ROW(NULL) and further nesting >> returns false. >> >> This has made me adjust my goal and change it so SELECT ROW(NULL) IS >> NULL returns true, and any further nesting returns false. >> >> Attached is a patch which accomplishes this, and a documentation update. > > I have not heard any feedback on this patch, so I would like to apply it > to give us a nested ROW/IS NULL API we can document. It would have to > be marked in the release notes as a backward incompatibility.
I don't have time to look at this in detail right now, but I think that's considerably premature. I'm not convinced that we understand all of the problems in this area are yet, let alone the solutions. And I notice that you haven't substantively responded to some of Tom's concerns. So -1 from me. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
