On Tue, Dec 5, 2017 at 11:32 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> ISTM one key issue here is whether pgbench's expression language is
> meant to model SQL (where we have function overloading) or C (where
> there is no overloading). I don't think we've really settled on a
> fixed policy on that, but maybe now is the time.
abs() is doing that already. Having some rules in the shape of at
least a comment would be nice.
> If we do think that function overloading is OK, there remains the
> question of when the typing is resolved. I think Robert is objecting
> to resolving at runtime, and I tend to agree that that's something
> we'd regret in the long run. It doesn't match either SQL or C.
+1.
--
Michael