From: belal <belalhamed@gmail.com>
To: pgsql-performance@postgresql.org
Subject: Copy command Faster than original select
Date: Fri, 6 Feb 2015 01:30:39 -0700 (MST)
Message-ID: <1423211439320-5836886.post@n5.nabble.com> (raw)
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>
I made complex select using PGAdmin III Query Editor, Postgre server 9.3
select ... from mytable join .. join ... order by ....
I get [Total query runtime: 8841 ms. 43602 rows retrieved.]
but when I use
copy ([same above select]) to '/x.txt'
I get [Query returned successfully: 43602 rows affected, 683 ms execution
time.]
these test made on the same machine as the postgresql server.
can anyone explain huge difference in executing time?
best regards all
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To: pgsql-performance@postgresql.org
Cc: belalhamed@gmail.com
Subject: Re: Copy command Faster than original select
In-Reply-To: <1423211439320-5836886.post@n5.nabble.com>
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