"Pavel Stehule" <[EMAIL PROTECTED]> writes: > Nobody worked on this subject a lot of years. Who need it, knows about it > and use it. I am for this topic is documented and in doc is note about > difference from standard and about some incompletness of this operator.
Once we document it there's going to be a backward-compatibility issue for any proposals to fix it. And I do think it is broken in a number of ways: http://archives.postgresql.org/pgsql-patches/2003-08/msg00060.php Per the link Joe cited, I'm not real thrilled with the spec's special treatment of NULL, but I'd like to see us fix IS OF so that it can be a substitute for testing tableoid to see which child table a tuple came from. And we definitely need to consider the domain issue. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
