Re: [HACKERS] path toward faster partition pruning

From: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
To: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
Cc: Rajkumar Raghuwanshi <rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Beena Emerson <memissemerson(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] path toward faster partition pruning
Date: 2018-02-21 01:53:19
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On 2018/02/21 10:19, David Rowley wrote:
> v30-0004-Faster-partition-pruning.patch contains:
> +create table coll_pruning_multi (a text) partition by range
> (substr(a, 1) collate "en_GB", substr(a, 1) collate "en_US");
> This'll likely work okay on Linux. Other collate tests seem to use
> COLLATE "POSIX or "C" so that work cross-platform.

Thanks. I completely forgot about that. I've rewritten those tests to
use "POSIX" and "C" in the attached.


Attachment Content-Type Size
v31-0001-Modify-bound-comparision-functions-to-accept-mem.patch text/plain 6.5 KB
v31-0002-Refactor-partition-bound-search-functions.patch text/plain 8.2 KB
v31-0003-Add-parttypid-partcollation-partsupfunc-to-Parti.patch text/plain 5.2 KB
v31-0004-Faster-partition-pruning.patch text/plain 111.1 KB
v31-0005-Add-only-unpruned-partitioned-child-rels-to-part.patch text/plain 23.9 KB

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