Tom,
> I'm also kind of wondering if the main use-cases couldn't be met with
> suitable multi-input custom aggregates, which is something we already
> have as of 8.2.
Actually, given that "skyline of" is *only* for aggregate sorting (as far as I
can tell) it doesn't present the complications which QBE did for using a
function interface.
Ranbeer, would it be possible to use an aggregate function syntax instead of
the SKYLINE OF syntax extension? This allows us to sidestep the issue of
non-standard additions to the reserved word list.
--
Josh Berkus
PostgreSQL @ Sun
San Francisco