"Magnus Naeslund\(f\)" <mag@fbab.net> writes:
> Where do get a listing of what PQftype() can return to me?
>>
>> select oid, typname from pg_type
> Does these change often?
The system type OIDs are stable. User-defined types would probably have
a new OID after a dump and reload.
> Or could i do like the ODBC driver, autogenerate a .h out of that table.
I would not recommend relying on compiled-in OID knowledge for any types
other than the system-defined datatypes. If you expect to have to deal
with user-defined types, it's best to cache the results of pg_type
lookups at the client end. You need not worry about OIDs changing
during a single client connection.
regards, tom lane