Date: Sun, 1 Dec 2013 08:12:31 +0100
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-performance@postgresql.org
Subject: Re: Speed up the query
Message-ID: <20131201071231.GA4780@tux>
References: <B097B80F-2D51-4F42-BC0D-5A38CBCD0C01@gmail.com>
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Hengky Liwandouw <hengkyliwandouw@gmail.com> wrote:
> 
> But the problem is : when i change the where clause to :
> 
> where jualid is not null or returjualid is not null
> and extract(year from tanggal)='2013')

Try to create this index:

create index xxx on public.tbltransaksi((extract(year from tanggal)))
where jualid is not null or returjualid is not null;

an run the query again, and if this not helps show us explain analyse,
you can use explain.depesz.com to provide us the plan.


Andreas
-- 
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."   (unknown)
Kaufbach, Saxony, Germany, Europe.              N 51.05082°, E 13.56889°


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