Re: Difference between UNIQUE constraint vs index

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: John Jawed <johnjawed(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Difference between UNIQUE constraint vs index
Date: 2007-02-28 00:58:39
Message-ID: 45E4D3BF.4010107@commandprompt.com
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John Jawed wrote:
> Is there any difference as far as when the "uniqueness" of values is
> checked in DML between a unique index vs a unique constraint? Or is
> the only difference syntax between unique indices and constraints in
> PostgreSQL?

They are functionally the same and unique constraint will create a
unique index.

Joshua D. Drake

>
> John
>
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