Re: GiST indeices on range types

On Sat, Mar 28, 2015 at 7:52 AM, Rebecca Zahra <rebeccazahra(at)gmail(dot)com>
wrote:

> Good morning,
>
> I am Rebecca Zahra and I am currently in my final year of Masters studies
> at the University of Malta. My thesis is about the usage of indexes for
> multi-dimensional data.
>
> I was going through the posts regarding GIST indexes and I came across the
> following
> http://dba.stackexchange.com/questions/39589/optimizing-queries-on-a-range-of-timestamps-two-columns
>
> I was wondering if maybe you can help me with a question. I know that an
> R-Tree index implementation is used on top of GIST to index spatial data.
> Can you please tell me what type of index is used on top of GIST to index *range
> types*?
>
>
PostgreSQL has had indexable range types for quite some time now:
http://www.postgresql.org/docs/current/static/rangetypes.html#RANGETYPES-GIST

Indexable with gist or spgist. I don't think the docs cover the actual
implementation internals though - you'll probably have to go to the source
if you need that.

--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/