From: chester c young <chestercyoung@yahoo.com>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: best performance for simple dml
Date: Sun, 26 Jun 2011 23:48:29 -0700 (PDT)
Message-ID: <576786.8402.qm@web161422.mail.bf1.yahoo.com> (raw)
In-Reply-To: <BANLkTimcokKM=MTAu1-kZFPsNGW8Lgj3rw@mail.gmail.com>
two questions:
I thought copy was for multiple rows - is its setup cost effective for one row?
copy would also only be good for insert or select, not update - is this right?
--- On Mon, 6/27/11, Pavel Stehule <pavel.stehule@gmail.com> wrote:
From: Pavel Stehule <pavel.stehule@gmail.com>
Subject: Re: [SQL] best performance for simple dml
To: "chester c young" <chestercyoung@yahoo.com>
Cc: pgsql-sql@postgresql.org
Date: Monday, June 27, 2011, 12:35 AM
Hello
try it and you will see. Depends on network speed, hw speed. But the most fast is using a COPY API
http://www.postgresql.org/docs/9.0/interactive/libpq-copy.html
Regards
Pavel Stehule
2011/6/27 chester c young <chestercyoung@yahoo.com>
what is the best performance / best practices for frequently-used simple dml, for example, an insert
1. fast-interface
2. prepared statement calling "insert ..." with binary parameters
3. prepared statement calling "myfunc(..." with binary parameters; myfunc takes its arguments and performs an insert using them
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To: pgsql-sql@postgresql.org
Cc: chestercyoung@yahoo.com, pavel.stehule@gmail.com
Subject: Re: best performance for simple dml
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