Re: select count of distinct rows

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От Havasvölgyi Ottó
Тема Re: select count of distinct rows
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Msg-id 005501c5fdef$30be34f0$0200a8c0@OTTO
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Ответ на unsubscribe  ("Dinesh Pandey" <dpandey@secf.com>)
Ответы Re: select count of distinct rows  ("Foster, Stephen" <stephenlfoster@comcast.net>)
Список pgsql-sql
Hi,

Yes, I need to compare all fields. Well, in this case it does not. Is this 
impossible?

Thanks,
Otto

----- Original Message ----- 
From: "Jaime Casanova" <systemguards@gmail.com>
To: "Havasvölgyi Ottó" <h.otto@freemail.hu>
Cc: <pgsql-sql@postgresql.org>
Sent: Sunday, December 11, 2005 1:57 AM
Subject: Re: [SQL] select count of distinct rows


On 12/10/05, Havasvölgyi Ottó <h.otto@freemail.hu> wrote:
> Hi,
>
> I would like to select the count of distinct rows in a table.
>
> SELECT COUNT(DISTINCT *) FROM mytable;
>

are really all the fields distincts? the table doesn't have a pk?

> This does not work. How can I do it with Postgres?
>
> Thanks,
> Otto
>


--
regards,
Jaime Casanova
(DBA: DataBase Aniquilator ;)

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