Re: Indexes for hashes

From: "ktm(at)rice(dot)edu" <ktm(at)rice(dot)edu>
To: Ivan Voras <ivoras(at)gmail(dot)com>
Cc: julyanto(at)equnix(dot)co(dot)id, postgres performance list <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Indexes for hashes
Date: 2016-06-15 14:53:44
Message-ID: 20160615145344.GN25300@aart.rice.edu
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On Wed, Jun 15, 2016 at 04:20:46PM +0200, Ivan Voras wrote:
> Hi,
>
> Just for testing... is there a fast (i.e. written in C) crc32 or a similar
> small hash function for PostgreSQL?
>

Hi Ivan,

Here is an extension that provides a number of different hash
functions, including a version of the version used internally:

https://github.com/markokr/pghashlib

Regards,
Ken

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