From: | "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org, pgsql-novice(at)postgresql(dot)org |
Subject: | Re: [SQL] [GENERAL] How to split a table? |
Date: | 2006-10-17 09:12:38 |
Message-ID: | 20061017091237.GA19268@a-kretschmer.de |
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Lists: | pgsql-general pgsql-novice pgsql-sql |
am Tue, dem 17.10.2006, um 1:53:35 -0700 mailte Gregory S. Williamson folgendes:
> Perhaps something like:
>
> CREATE TABLE foo2 AS SELECT * FROM foo WHERE (rand() <= 0.60);
Then we have 2 tables: one with 100% data and one with around 60% ;-)
If the table contains a primary key you can delete simple the copied
records from the origin table.
(delete from origin where pk in (select pk from copy);
>
> -----Original Message-----
Please, no top-posting with fullquote below.
Andreas
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Andreas Kretschmer
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