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From Mike Matrigali <mikem_...@sbcglobal.net>
Subject Re: [jira] Commented: (DERBY-47) Some possible improvements to IN optimization
Date Mon, 26 Feb 2007 23:34:03 GMT
please go ahead with your patch - I think the changes are good 
incremental steps.  The approach with using the flag and code
reuse seems reasonable.

I am interested in the costing but I think that is separate from
the work you are doing.  What you have implemented seems in line
with the current behavior.  My itch here was I have been trying
to understand the problems caused by not having available
selectivity stats, and if store could provide some better estimates
if the complete stat is not available.  This is no way should
hold up your IN work.

Army wrote:
> A B (JIRA) wrote:
> 
>>
>> A B commented on DERBY-47:
>> --------------------------
>>
>> Thank you very much for your excellent questions, Mike.  My attempted 
>> answers are below...
> 
> 
> Hi Mike,
> 
> Just wondering if you had any additional questions/inquiries regarding 
> my previous responses to your comments?  If not, I'd like to commit 
> d47_relOpPredCheck_v1.patch to trunk and proceed from there...
> 
> Thanks again for the feedback!
> Army
> 
> 
> 


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