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Re: Creating large database of MD5 hash values

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: "Decibel!" <decibel(at)decibel(dot)org>
Cc: Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Jon Stewart <jonathan(dot)l(dot)stewart(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Creating large database of MD5 hash values
Date: 2008-05-28 23:37:36
Message-ID: 200805282337.m4SNba128261@momjian.us (view raw or flat)
Thread:
Lists: pgsql-performance
Decibel! wrote:
> On Apr 11, 2008, at 10:25 AM, Alvaro Herrera wrote:
> 
> Sorry, yes, I'm behind on email... :(
> 
> > If MD5 values will be your primary data and you'll be storing millions
> > of them, it would be wise to create your own datatype and operators  
> > with
> > the most compact and efficient representation possible.
> 
> 
> If you do this *please* post it. I really think it would be worth  
> while for us to have fixed-size data types for common forms of binary  
> data; MD5, SHA1 and SHA256 come to mind.

Why do you think it would be worth while?

-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

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