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Re: CLONE TABLE DATA TO <new_table>

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Marc Mamin <M(dot)Mamin(at)intershop(dot)de>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: CLONE TABLE DATA TO <new_table>
Date: 2012-01-13 13:12:16
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Lists: pgsql-hackers
On Fri, Jan 13, 2012 at 5:56 AM, Marc Mamin <M(dot)Mamin(at)intershop(dot)de> wrote:
> I wonder if it would be possible to have a fast table clone function (data
> only) while copying the corresponding data files
> instead of using the "CREATE TABLE AS"  way.
> pg_upgrade seems to have such a mechanisms, though it requires to first stop
> the server...
> This would of course require to lock the complete table and ensure that all
> latest changes are flushed to the plates.

I think it would be possible to implement this.  In fact, it could
probably be done as a contrib module.

Robert Haas
The Enterprise PostgreSQL Company

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