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Re: [PATCHES] updated hash functions for postgresql v1

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Jeff Davis <pgsql(at)j-davis(dot)com>
Cc: Hannu Krosing <hannu(at)2ndQuadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Asko Oja <ascoja(at)gmail(dot)com>, Kenneth Marshall <ktm(at)rice(dot)edu>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] updated hash functions for postgresql v1
Date: 2009-10-29 07:47:51
Message-ID: 1256802471.22925.3.camel@fsopti579.F-Secure.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Wed, 2009-10-28 at 12:51 -0700, Jeff Davis wrote:
> Trying to develop and document a set of standardized, stable hash
> functions covering a wide range of possible use cases sounds like it may
> be better served by an extension.

I suspect that some of the participants in this thread have PL/Proxy in
mind.  PL/Proxy should probably ship its own set of hash functions.

If we ever get built-in partitioning by hash (see thread nearby and most
previous ones like it), we should also think about providing a hash
function that doesn't change output over versions and is independent of
hash index implementation concerns.


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