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Re: Copying data from table to table (cloned tables)

From: "Jim C(dot) Nasby" <jim(at)nasby(dot)net>
To: Bricklen Anderson <banderson(at)presinet(dot)com>
Cc: Fourat Zouari <fourat(at)gmail(dot)com>, pgsql-novice(at)postgresql(dot)org,pgsql-admin(at)postgresql(dot)org
Subject: Re: Copying data from table to table (cloned tables)
Date: 2006-10-10 15:37:25
Message-ID: 20061010153724.GI72517@nasby.net (view raw or flat)
Thread:
Lists: pgsql-adminpgsql-novice
On Tue, Oct 10, 2006 at 10:24:57AM -0500, Jim C. Nasby wrote:
> > If you just want to copy the data across to the other table:
> > begin;
> > insert into table2 select * from table1 where <some criteria>;
> > commit;
> > 
> > if you also want to remove that same data from table1:
> > begin;
> > insert into table2 select * from table1 where <some criteria>;
> > delete from table1 where <same criteria as above>;
> > commit;

I forgot to mention you could also use a serializable transaction with
your method...

BEGIN ISOLATION LEVEL SERIALIZABLE;
INSERT ...
DELETE ...
COMMIT;

Just remember you'll need to deal with the possibility of a 'could not
serialize' error.
-- 
Jim Nasby                                            jim(at)nasby(dot)net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)

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