On Thu, 7 Dec 2006, Mikael Carneholm wrote:
> >
> > And we're building the windowing functions as fast as we can ;-)
> >
>
> Interesting. Which functions are you planning on implementing, more
> specifically? (Personally, I have had great use of FIRST/LAST,
> RANK/DENSE_RANK and LAG/LEAD)
Interestingly, FIRST, LAST, LAG and LEAD are absent from the spec but
everyone I've spoken to has said they're close to being the most useful
:-). So, I'm aiming to do those as well.
Implemenenting the actual functions is trivial compared to implementing
the window construct in the executor (and planner).
Gavin