Re: [HACKERS] path toward faster partition pruning

From: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
To: Rajkumar Raghuwanshi <rajkumar(dot)raghuwanshi(at)enterprisedb(dot)com>
Cc: David Rowley <david(dot)rowley(at)2ndquadrant(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: 2018-02-20 08:21:22
Message-ID: 751ee7af-28fb-4d64-dcd0-90a5fb00ff79@lab.ntt.co.jp
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Thanks Rajkumar for the test.

On 2018/02/20 16:56, Rajkumar Raghuwanshi wrote:
> I have applied v29 patch-set on head and got "ERROR: operator 1209 is not
> a member of opfamily 1994" with below test case. Please take a look.
>
> CREATE TABLE part (c1 INT4, c2 TEXT, c3 INT4) PARTITION BY LIST (c2);
> CREATE TABLE part_p1 PARTITION OF part FOR VALUES IN('ABC');
> CREATE TABLE part_p2 PARTITION OF part FOR VALUES IN('DEF');
> CREATE TABLE part_p3 PARTITION OF part FOR VALUES IN('GHI');
> CREATE TABLE part_p4 PARTITION OF part FOR VALUES IN('JKL');
>
> INSERT INTO part VALUES (100,'ABC',10);
> INSERT INTO part VALUES (110,'DEF',20);
> INSERT INTO part VALUES (120,'GHI',10);
> INSERT INTO part VALUES (130,'JKL',100);
>
> explain (costs off) SELECT * FROM part WHERE c2 LIKE '%ABC%';
> *ERROR: operator 1209 is not a member of opfamily 1994*

An oversight in the v28 patch seems to have caused this. Fixed in the
attached.

Thanks,
Amit

Attachment Content-Type Size
v30-0001-Modify-bound-comparision-functions-to-accept-mem.patch text/plain 6.5 KB
v30-0002-Refactor-partition-bound-search-functions.patch text/plain 8.2 KB
v30-0003-Add-parttypid-partcollation-partsupfunc-to-Parti.patch text/plain 5.2 KB
v30-0004-Faster-partition-pruning.patch text/plain 111.2 KB
v30-0005-Add-only-unpruned-partitioned-child-rels-to-part.patch text/plain 23.9 KB

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