From: Oliveiros Cristina <oliveiros.cristina@marktest.pt>
To: Ivan Sergio Borgonovo <mail@webthatworks.it>
To: pgsql-sql@postgresql.org
Subject: Re: Obtaining a limited number of records from a long query
Date: Mon, 25 May 2009 15:20:57 +0100
Message-ID: <027f01c9dd44$054655e0$ec5a3d0a@marktestcr.marktest.pt> (raw)
References: <020201c9dd3d$372c3f40$ec5a3d0a@marktestcr.marktest.pt>
<4A1AA0FA.1070507@networkmail.eu>
<025501c9dd40$86155440$ec5a3d0a@marktestcr.marktest.pt>
<20090525161347.166789ac@dawn.webthatworks.it>
Thank you for pointing it out, Ivan.
The query I am trying to restrict output for happens to be an ORDER BY
query.
Actually I wasn't aware of this detail.
I'll leave a mental note for myself that results might be unexpected for not
ORDER BY queries
Best,
Oliveiros
----- Original Message -----
From: "Ivan Sergio Borgonovo" <mail@webthatworks.it>
To: <pgsql-sql@postgresql.org>
Sent: Monday, May 25, 2009 3:13 PM
Subject: Re: [SQL] Obtaining a limited number of records from a long query
> On Mon, 25 May 2009 14:55:54 +0100
> "Oliveiros Cristina" <oliveiros.cristina@marktest.pt> wrote:
>
>>
>>
>> Thanks a million, Andy.
>>
>> It's precisely what I needed, Indeed!
>
> Beware: unless you specify an ORDER BY (and you expect no other
> record is inserted between one query and the other... or you just
> don't care) you may incur in unexpected results.
>
> A query without an order by is not granted to return the result in
> the same order.
>
> If you can (same session) you may use cursors.
>
>
> --
> Ivan Sergio Borgonovo
> http://www.webthatworks.it
>
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
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Subject: Re: Obtaining a limited number of records from a long query
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