Re: [v9.5] Custom Plan API

On 8 May 2014 22:55, Tom Lane <tgl@sss.pgh.pa.us> wrote:

>> We're past the prototyping stage and into productionising what we know
>> works, AFAIK. If that point is not clear, then we need to discuss that
>> first.
>
> OK, I'll bite: what here do we know works?  Not a damn thing AFAICS;
> it's all speculation that certain hooks might be useful, and speculation
> that's not supported by a lot of evidence.  If you think this isn't
> prototyping, I wonder what you think *is* prototyping.

My research contacts advise me of this recent work http://www.ntu.edu.sg/home/bshe/hashjoinonapu_vldb13.pdf
and also that they expect a prototype to be ready by October, which I
have been told will be open source.

So there are at least two groups looking at this as a serious option
for Postgres (not including the above paper's authors).

That isn't *now*, but it is at least a time scale that fits with
acting on this in the next release, if we can separate out the various
ideas and agree we wish to proceed.

I'll submerge again...

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services