>> Select typoutput::oid from pg_type limit 1;
> Also, you *can* go back the other way. It's very common to write
>
> Select * from pg_proc where oid = 'boolout'::regproc
>
> rather than looking up the OID first.
> see "Object Identifier Types" in the manual.
Many thanks to you both, that helps tremendously.
- Simone Aiken