Re: [HACKERS] Runtime Partition Pruning - Mailing list pgsql-hackers

From David Rowley
Subject Re: [HACKERS] Runtime Partition Pruning
Date
Msg-id CAKJS1f9QEOnmCy+QMuGTM1pHn8X1NwMRmm8sCBhL-avBEFU+Uw@mail.gmail.com
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In response to Re: [HACKERS] Runtime Partition Pruning  (Beena Emerson <memissemerson@gmail.com>)
List pgsql-hackers
On 22 December 2017 at 02:06, Beena Emerson <memissemerson@gmail.com> wrote:
>> Thanks for sending.  Will the tests still pass if you remove the hack
>> from choose_custom_plan()?
>>
>
> The hack has been removed in the v7 patch sent and yes the tests work
> without any additional adjustments.

Oh nice. I see you've included parameters to force the 5 custom plans
to having a higher cost, then for the first generic plan attempt,
you're choosing params that'll result in a cheaper plan. Great idea.
I'll revoke what I said about this being impossible to test now :)

-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


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