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To: pgsql-sql@postgresql.org
From: Thomas Kellerer <spam_eater@gmx.net>
Subject: Re: SELECT very slow
Date: Thu, 09 Jun 2005 13:30:08 +0200
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On 09.06.2005 02:06 Tom Lane wrote:

> Thomas Kellerer <spam_eater@gmx.net> writes:
> 
>>Is there anything I can do, to convince PG to return the first row more 
>>quickly?
> 
> The solution is to use a cursor and FETCH a reasonably small number of
> rows at a time.

Thanks for all your answers.

I turned out that I did not read the JDBC documentation closely enough (blush)

Setting the fetchSize to 1 (or something >0) only uses a cursor if autocommit is
disabled (due to the annoying "transaction is aborted" when running DDL scripts
that have errors, I usually turn autocommit on).

With autocommit off, the rows will be returned "immediately" (so the driver is
using a cursor to fetch the data)

Regards
Thomas