Robert Haas <robertmh...@gmail.com> writes: > On Tue, Sep 9, 2014 at 12:01 PM, Andrew Gierth > <and...@tao11.riddles.org.uk> wrote: >> Honestly, ChainAggregate is _trivial_ compared to trying to make the >> GroupAggregate code deal with multiple inputs, or trying to make some >> new sort of plumbing node to feed input to those sorts. (You'd think >> that it should be possible to use the existing CTE mechanics to do it, >> but noooo... the existing code is actively and ferociously hostile to >> the idea of adding new CTEs from within the planner.)
> That's unfortunate. I'm less than convinced that it's true ... I've been meaning to find time to review this patch, but it sounds like it's getting to the point where I need to. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers