On Tue, Feb 16, 2010 at 09:11:24AM -0800, David E. Wheeler wrote:
> > An extra source of puzzlement is that the oid of the 'unknown' type is
> > 705 not 0, and the unknown type isn't discussed in the docs (as far as I
> > could see).
>
> Yes, I noticed that, too. Greg, do you know the answer to that?
My guess is that, semantically, 0 means the datatype is unknown,
whereas 705 means the datatype is known to be type "unknown".
I believe however the backend treats these cases identically (at least,
simple testing doesn't reveal any differences), but they are not the
same.
Have a nice day,
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/
> Please line up in a tree and maintain the heap invariant while
> boarding. Thank you for flying nlogn airlines.
