I would do
select * into mynewtable
from myoldtable ORDER by random() LIMIT 15000
where 15000 in this case is <your table row
count>*.6
If you want to create another table with 40% of the
remaining data then something like
select * into mynewtable2 from myoldtable where
myoldtable.primarykey NOT IN(select primarykey from
mynewtable)
]
In this case primarykey you would replace with the
primary key field of your table.
From: pgsql-novice-owner@xxxxxxxxxxxxxx [mailto:pgsql-novice-owner@xxxxxxxxxxxxxx] On Behalf Of Felix Zhang
Sent: Tuesday, October 17, 2006 3:39 AM
To: pgsql-sql@xxxxxxxxxxxxxx; pgsql-general@xxxxxxxxxxxxxx; pgsql-novice@xxxxxxxxxxxxxx
Subject: [NOVICE] How to split a table?
Hi,
I want to split a table to 2 small tables. The 1st one contains 60% records
which are randomly selected from the source table.
How to do it?
Regards,
Felix
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