| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: BRIN bloom indexes |
| Date: | 2017-10-27 05:20:32 |
| Message-ID: | CA+TgmoajaQKBUx=vaTUFo6z80dsRzBw__Nu41Q4t06baZep3Ug@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Oct 19, 2017 at 10:15 PM, Tomas Vondra
<tomas(dot)vondra(at)2ndquadrant(dot)com> wrote:
> Let's see a query like this:
>
> select * from bloom_test
> where id = '8db1d4a6-31a6-e9a2-4e2c-0e842e1f1772';
>
> The minmax index produces this plan
>
> Heap Blocks: lossy=2061856
> Execution time: 22707.891 ms
>
> Now, the bloom index:
>
> Heap Blocks: lossy=25984
> Execution time: 338.946 ms
It's neat to see BRIN being extended like this. Possibly we could
consider making it a contrib module rather than including it in core,
although I don't have strong feelings about it.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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