Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [HACKERS] path toward faster partition pruning

From: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
To: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
Cc: Amit Langote <amitlangote09(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Rajkumar Raghuwanshi <rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Beena Emerson <memissemerson(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [HACKERS] path toward faster partition pruning
Date: 2018-01-24 00:04:35
Message-ID: CAKJS1f-b4_nW9bzpX+-4yx16eMawWN+=aUOvmiKVko-erLMOug@mail.gmail.com
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On 23 January 2018 at 23:22, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> On 2018/01/23 15:44, David Rowley wrote:
>> Attached is what I had in mind about how to do this.
>
> Thanks for the delta patch. I will start looking at it tomorrow.

Thanks. I've been looking more at this and I've made a few more
adjustments in the attached.

This delta patch should be applied against the
faster_partition_prune_v21_delta_drowley_v1.patch one I sent
yesterday. This changes a few comments, also now correctly passes the
context to get_partitions_excluded_by_ne_clauses and fixes a small
error where the patch was failing to record a notnull for the
partition key when it saw a strict <> clause. It was only doing this
for the opposite case, but both seem to be perfectly applicable. I
also made a small adjustment to the regression tests to ensure this is
covered.

I'm now going to start work on basing the partition pruning patch on
top of this.

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

Attachment Content-Type Size
faster_partition_prune_v21_delta_drowley_v1_delta.patch application/octet-stream 12.3 KB

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