From: Raj Mathur (राज माथुर) <raju@linux-delhi.org>
To: pgsql-sql@postgresql.org
Subject: Generic design: char vs varchar primary keys
Date: Wed, 3 Aug 2011 20:40:17 +0530
Message-ID: <201108032040.17628.raju@linux-delhi.org> (raw)
Hi,
Can you point me to any pages that explain the difference between using,
say CHAR(8) vs VARCHAR(8) as the primary key for a table? Is there any
impact on the database in terms of:
- Speed of indexed retrieval
- Speed of join from a referencing table
- Storage (I presume VARHAR(8) would have a slight edge, in general)
- Any other issue
Regards,
-- Raj
--
Raj Mathur raju@kandalaya.org http://kandalaya.org/
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To: pgsql-sql@postgresql.org
Cc: raju@linux-delhi.org
Subject: Re: Generic design: char vs varchar primary keys
In-Reply-To: <201108032040.17628.raju@linux-delhi.org>
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