Florian Weimer <fw(at)deneb(dot)enyo(dot)de> writes:
> Can I embed the types I'm interested in into my program, or should I
> query the server at least once per connection to get the mapping? I'm
> interested in types such as INTEGER, TEXT, BYTEA, etc. No user
> defined types, and nothing fancy. Ultra-long-term portability isn't
> required, either.
Well, the type OIDs of the standard built-in types haven't changed in
at least ten years, but that doesn't mean we won't change 'em in the
future. I'd advise at least using the #define's from pg_type.h rather
than writing actual numeric constants.
regards, tom lane