Re: Suggestion for optimization

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Doug McNaught <doug(at)wireboard(dot)com>
Cc: "Dann Corbit" <DCorbit(at)connx(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Suggestion for optimization
Date: 2002-04-05 19:37:19
Message-ID: 9048.1018035439@sss.pgh.pa.us
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Doug McNaught <doug(at)wireboard(dot)com> writes:
> "Dann Corbit" <DCorbit(at)connx(dot)com> writes:
>> It would be nice if total table cardinality could be maintained live.

> How would this work with MVCC?

It wouldn't. That's why it's not there. Under MVCC, table cardinality
is in the eye of the beholder...

regards, tom lane

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