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Re: Storage space lost during an UPDATE

From: "Vitaly Belman" <vitalyb(at)gmail(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: Storage space lost during an UPDATE
Date: 2004-07-09 21:18:56
Message-ID: ccn240$sqe@odah37.prod.google.com (view raw or flat)
Thread:
Lists: pgsql-novice
Ah, I understand. Thanks :).

Steve Crawford wrote:
> This is expected. It has to do with MVCC, not commit. PostgreSQL
> creates a duplicate record for each record that was updated. This is
> how MVCC hangs on to "old" records that may still be in use by other
> transactions.
> 
<SNIP>
> 
> Cheers,
> Steve


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