From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Rajesh Kumar <rajeshkumar.dba09@gmail.com>
To: Pgsql-admin <pgsql-admin@lists.postgresql.org>
Subject: Re: Unique index
Date: Wed, 20 Sep 2023 16:14:52 +0200
Message-ID: <3983831447229a17fc9028fd2f5b2aaf0996c291.camel@cybertec.at> (raw)
In-Reply-To: <CAJk5AtZyVr7xeOQrxo1HGYePMK9o_+Pt9OdkHT1w_p6ywHS-qg@mail.gmail.com>
References: <CAJk5AtZyVr7xeOQrxo1HGYePMK9o_+Pt9OdkHT1w_p6ywHS-qg@mail.gmail.com>
On Wed, 2023-09-20 at 19:16 +0530, Rajesh Kumar wrote:
> Why unique index is used over unique constraints?
A unique constraint is implemented by a unique index.
If you create the constraint, the index is created automatically.
You cannot drop the index unless you drop the constraint.
Yours,
Laurenz Albe
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To: pgsql-admin@postgresql.org
Cc: laurenz.albe@cybertec.at, rajeshkumar.dba09@gmail.com, pgsql-admin@lists.postgresql.org
Subject: Re: Unique index
In-Reply-To: <3983831447229a17fc9028fd2f5b2aaf0996c291.camel@cybertec.at>
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