The oid maps to the pg_type table:
select oid, typname from pg_type order by oid;
So, after a select is done, and I get a row description back, I need to do another query to find out what the actual type was?
I'm writing a dataprovider, so I need to map the types back to .NET types. It seems kinda odd that you'd have to do a second query to find out the type.
