Re: [NOVICE] How to split a table?

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(at)postgresql(dot)org
[mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Felix Zhang
Sent: Tuesday, October 17, 2006 3:39 AM
To: pgsql-sql(at)postgresql(dot)org; pgsql-general(at)postgresql(dot)org;
pgsql-novice(at)postgresql(dot)org
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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