Re: pg_dump versus views and opclasses

On Sun, Jan 18, 2009 at 2:52 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> "Brendan Jurd" <direvus@gmail.com> writes:
>> Update.  Turns out that 8.4 DOES know how to execute the view.  If you
>> try to group on a user-defined composite type, 8.4 just goes ahead and
>> groups it, rather than giving the old "could not identify an ordering
>> operator" error.
>
> Is there a hash opclass for the type?  8.4 can group types that have
> hash but not btree opclasses, but prior versions insisted on btree.

Well I sure didn't create one.  I've only been attempting to create a
btree opclass.  Is there some kind of default hash opclass for
composites?

Cheers,
BJ