From: Frank Bax <fbax@sympatico.ca>
To: pgsql-sql@postgresql.org
Subject: Re: select count of distinct rows
Date: Sat, 10 Dec 2005 20:23:14 -0500
Message-ID: <5.2.1.1.0.20051210202158.0344ac80@pop6.sympatico.ca> (raw)
In-Reply-To: <003001c5fded$53a2c5a0$0200a8c0@OTTO>
References: <20051209053849.498E8F0BEC@svr2.postgresql.org>
At 07:53 PM 12/10/05, Havasvölgyi Ottó wrote:
>I would like to select the count of distinct rows in a table.
> SELECT COUNT(DISTINCT *) FROM mytable;
>This does not work. How can I do it with Postgres?
select count(*) from (select distinct * from mytable) as x;
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To: pgsql-sql@postgresql.org
Cc: fbax@sympatico.ca
Subject: Re: select count of distinct rows
In-Reply-To: <5.2.1.1.0.20051210202158.0344ac80@pop6.sympatico.ca>
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