From: Craig Ringer <craig@postnewspapers.com.au>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: chester c young <chestercyoung@yahoo.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: best performance for simple dml
Date: Mon, 27 Jun 2011 16:02:40 +0800
Message-ID: <4E083920.1070302@postnewspapers.com.au> (raw)
In-Reply-To: <BANLkTik90qDGv-9CcHtV6i=abynywUkbNA@mail.gmail.com>
References: <BANLkTimcokKM=MTAu1-kZFPsNGW8Lgj3rw@mail.gmail.com>
<576786.8402.qm@web161422.mail.bf1.yahoo.com>
<BANLkTik90qDGv-9CcHtV6i=abynywUkbNA@mail.gmail.com>
On 27/06/11 15:05, Pavel Stehule wrote:
> exec('begin');
> for(i = 0; i < 1000; i++)
> exec("insert into foo values($1), itoa(i));
> exec('commit');
You can probably also benefit from multi-valued INSERTs, though I
haven't verified this.
INSERT INTO foo VALUES
(1,'joe','dean'),
(4,'fred','bob'),
(11,'anne','smith');
There'll be a threshhold above which the COPY protocol becomes faster,
though.
--
Craig Ringer
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To: pgsql-sql@postgresql.org
Cc: craig@postnewspapers.com.au, pavel.stehule@gmail.com, chestercyoung@yahoo.com
Subject: Re: best performance for simple dml
In-Reply-To: <4E083920.1070302@postnewspapers.com.au>
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