Re: Unneccessary cmax in heap tuple ?

From: devik(at)cdi(dot)cz
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Unneccessary cmax in heap tuple ?
Date: 2000-10-26 10:48:33
Message-ID: 39F80C01.897896C7@cdi.cz
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Tom Lane wrote:
> In situations like SQL function calls, it may be necessary to suspend
> a table scan while we go off and do other commands, then come back and
> resume the table scan. So there can be multiple scans with different
> command IDs in progress within a transaction.

Ohh yes .. you are right. Thanks for explanation.
devik

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