Re: partition pruning doesn't work with IS NULL clause in multikey range partition case

From: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>
Cc: Dilip Kumar <dilipbalaut(at)gmail(dot)com>, amul sul <sulamul(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
Subject: Re: partition pruning doesn't work with IS NULL clause in multikey range partition case
Date: 2018-07-17 00:22:39
Message-ID: 05e77c12-393c-4a2c-ee73-763b1aad6276@lab.ntt.co.jp
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On 2018/07/17 8:17, Alvaro Herrera wrote:
> On 2018-Jul-16, Ashutosh Bapat wrote:
>
>>> Hmm, let me reword this comment completely. How about the attached?
>
>> That looks much better. However it took me a small while to understand
>> that (1), (2) and (3) correspond to strategies.
>
> You're right. Amended again and pushed. I also marked the open item
> closed.
>
> Thanks everyone

Thank you Ashutosh for further review and Alvaro for improving it a quite
a bit before committing.

Thanks,
Amit

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