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Re: 8.4 optimization regression?

From: Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: 8.4 optimization regression?
Date: 2011-08-31 05:11:56
Message-ID: 4E5DC29C.1000700@catalyst.net.nz (view raw or flat)
Thread:
Lists: pgsql-performance
On 30/08/11 21:43, Grzegorz Jaśkiewicz wrote:
> 2011/8/29 Mark Kirkwood<mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>:
>
>> I note from the commit message that the fix test case was from Grzegorz
>> Jaskiewicz (antijoin against a small subset of a relation).  I was not able
>> to find this in the archives - Grzegorz do you recall the actual test case?
>> I thought it might be useful for me to spend some time studying both cases
>> and seeing if I can come up with any tweaks that would let both your and my
>> queries work well!
> Sorry, I don't remember that particular example. If I complained about
> it, it would  have been on this list or the general list.
> I'll have a look by date.
>

Thanks - however I think I have managed to make up a good test case that 
shows the particular commit working. More on that to come!

Cheers

Mark

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