From: Karsten Hilbert <Karsten.Hilbert@gmx.net>
To: pgsql-sql@postgresql.org
Subject: Re: Unique Constraint with foreign Key
Date: Mon, 17 May 2004 18:51:13 +0200
Message-ID: <20040517185113.B592@hermes.hilbert.loc> (raw)
In-Reply-To: <20040210201521.GA13737@wolff.to>
References: <64366.138.88.163.115.1076432616.squirrel@physics.gmu.edu>
<20040210201521.GA13737@wolff.to>
> > or Can i have varchar types of size 50 as primary keys in Postgres.
> Yes. But unless the 50 character limit comes from a business rule, you
> might want to use the type 'text'.
And if that limit does come from a business rule you might want
to think twice whether using columns constrained by business
rules are good candidates for primary keys.
Karsten
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To: pgsql-sql@postgresql.org
Cc: Karsten.Hilbert@gmx.net
Subject: Re: Unique Constraint with foreign Key
In-Reply-To: <20040517185113.B592@hermes.hilbert.loc>
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