From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-performance@postgresql.org
Subject: Re: really quick multiple inserts can use COPY?
Date: Mon, 11 Dec 2006 17:57:32 +0100
Message-ID: <20061211165731.GA11970@KanotixBox> (raw)
In-Reply-To: <op.tkekypo381rjf6@xjens.apus.local>
References: <op.tkekypo381rjf6@xjens.apus.local>
Jens Schipkowski <jens.schipkowski@apus.co.at> schrieb:
> Hello!
>
> In our JAVA application we do multiple inserts to a table by data from a
> Hash Map. Due to poor database access implemention - done by another
> company (we got the job to enhance the software) - we cannot use prepared
> statements. (We are not allowed to change code at database access!)
> First, we tried to fire one INSERT statement per record to insert. This
> costs 3 ms per row which is to slow because normally we insert 10.000
> records which results in 30.000 ms just for inserts.
Can you change this from INSERT-Statements to COPY? Copy is *much*
faster than INSERT.
If no, do you using all INSERTs in one transaction? I believe, a 'BEGIN'
and a 'COMMIT' around all INSERTs may increase the speed.
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." (unknow)
Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°
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To: pgsql-performance@postgresql.org
Cc: akretschmer@spamfence.net
Subject: Re: really quick multiple inserts can use COPY?
In-Reply-To: <20061211165731.GA11970@KanotixBox>
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