On Dec 15, 2013 6:44 PM, "Tom Lane" <tgl@sss.pgh.pa.us> wrote: > David Rowley <dgrowleyml@gmail.com> writes: > > I've attached an updated patch which includes some documentation. > > I've also added support for negfunc in CREATE AGGREGATE. Hopefully that's > > an ok name for the option, but if anyone has any better ideas please let > > them be known. > > I'd be a bit inclined to build the terminology around "reverse" instead of > "negative" --- the latter seems a bit too arithmetic-centric. But that's > just MHO.
To contribute to the bike shedding, inverse is often used in similar contexts.
I guess it's not really bike shedding, most of the work I hope is done, so I might as well try to get the docs polished up and we'd need a consensus on what we're going to call them before I can get that done.
I like both of these better than negative transition function and I agree negative implies arithmetic rather than opposite.
Out of these 2 I do think inverse fits better than reverse, so I guess that would make it "inverse aggregate transition function".
Would that make the CREATE AGGREGATE option be INVFUNC ?
Any other ideas or +1's for any of the existing ones?