From: Vitalii Tymchyshyn <tivv00@gmail.com>
To: Adarsh Sharma <adarsh.sharma@orkash.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Re-Reason of Slowness of Query
Date: Wed, 23 Mar 2011 12:12:08 +0200
Message-ID: <4D89C778.6050805@gmail.com> (raw)
In-Reply-To: <4D89C704.5080603@orkash.com>
References: <4D89BABF.4080806@orkash.com>
<4D89BCD6.6040604@gmail.com>
<4D89C704.5080603@orkash.com>
23.03.11 12:10, Adarsh Sharma ???????(??):
> I just want to retrieve that id 's from page_content which do not have
> any entry in clause2 table.
>
Then
select distinct(p.crawled_page_id) from page_content p
where NOT EXISTS (select 1 from clause2 c where c.source_id =
p.crawled_page_id);
is correct query.
Best regards, Vitalii Tymchyshyn.
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To: pgsql-performance@postgresql.org
Cc: tivv00@gmail.com, adarsh.sharma@orkash.com
Subject: Re: Re-Reason of Slowness of Query
In-Reply-To: <4D89C778.6050805@gmail.com>
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