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Re: Small fix for inv_getsize

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Denis Perchine <dyp(at)perchine(dot)com>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Small fix for inv_getsize
Date: 2000-11-02 17:32:38
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-patches
Denis Perchine <dyp(at)perchine(dot)com> writes:
>> Now that I think about it, this code could do a two-key scan backwards
>> and stop after finding the first (last) valid tuple, but that's more
>> than a one-line change.

> Actual logic is to find the maximum of pageno, for specified oid.
> I do index scan on 2-keys index, specifying only one key as constraint...
> If I do index scan forward I will get the smallest pageno first...
> Otherwise I get the highest pageno... And this is what I want...

Hmm ... probably right, but the loop logic doesn't behave that way
right now.

			regards, tom lane

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