Re: WIP Patch for GROUPING SETS phase 1

On 08/22/2014 02:42 PM, Greg Stark wrote:
> On Fri, Aug 22, 2014 at 7:02 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> So the proposal you are pushing is going
>> to result in seriously teeing off some fraction of our userbase;
>> and the argument why that would be acceptable seems to boil down to
>> "I think there are few enough of them that we don't have to care"
>> (an opinion based on little evidence IMO
> FWIW here's some evidence... Craig Kersteins did a talk on the
> statistics across the Heroku fleet: Here are the slides from 2013
> though I think there's an updated slide deck with more recent numbers
> out there:
> https://speakerdeck.com/craigkerstiens/postgres-what-they-really-use
>
> Cube shows up as the number 9 most popular extension with about 1% of
> databases having it installed (tied with pg_crypto and earthdistance).
> That's a lot more than I would have expected actually.

That's an interesting statistic. What I'd be more interested in is
finding out how many of those are actually using it as opposed to having
loaded it into a database.

cheers

andrew