> Tatsuo Ishii <t-ishii@sra.co.jp> writes:
> > I am worried about that too. But if we stick a C-level API, how can we
> > define the argument data type suitable for C string? I don't see such
> > data types. Maybe you are suggesting that we should not use CREATE
> > FUNCTION?
>
> Well, you'd have to use the same cheat that's used for selectivity
> estimation functions, triggers, I/O functions and everything else that
> deals in internal datatypes: declare the function as taking and
> returning OPAQUE. This is moderately annoying but I don't think
> there's anything really wrong with it in practice.
Oh, I see.
--
Tatsuo Ishii