| From: | Greg Stark <stark(at)mit(dot)edu> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Minmax indexes |
| Date: | 2014-06-17 15:25:52 |
| Message-ID: | CAM-w4HN4L3Uwo=0V6tyf1YoP2xCFvkWFDUGq+p9p5if=WkUc4Q@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Jun 17, 2014 at 3:31 PM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> Is there actually a significant usecase behind that wish or just a
> general demand for being generic? To me it seems fairly unlikely you'd
> end up with something useful by doing a minmax index over bounding
> boxes.
Isn't min/max just a 2d bounding box? If you do a bulk data load of
something like the census data then sure, every page will have data
points for some geometrically clustered set of data.
I had in mind to do a small bloom filter per block. In general any
kind of predicate like bounding box should work.
--
greg
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