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From: Jesper Pedersen <jesper.pedersen@redhat.com>
To: David Rowley <david.rowley@2ndquadrant.com>
Cc: Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com>
Cc: Beena Emerson <memissemerson@gmail.com>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: amul sul <sulamul@gmail.com>
Cc: pgsql-hackers@postgresql.org <pgsql-hackers@postgresql.org>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Subject: Re: [HACKERS] Runtime Partition Pruning
Date: Thu, 22 Feb 2018 10:11:52 -0500
Message-ID: <99d83db5-d283-5f8b-2970-460889108ede@redhat.com> (raw)
In-Reply-To: <CAKJS1f_bzRdbUutwc8iy5Bs5Krc9couEQK9NH1SUgMJvvnvWxg@mail.gmail.com>
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	<CAKJS1f_bzRdbUutwc8iy5Bs5Krc9couEQK9NH1SUgMJvvnvWxg@mail.gmail.com>

Hi David,

On 02/21/2018 04:06 AM, David Rowley wrote:
> I've attached v11 of the patch.
> 

Are UPDATE and DELETE suppose to be supported ?

With

-- test.sql --
CREATE TABLE test (a integer NOT NULL, b integer) PARTITION BY HASH(a);
CREATE TABLE test_p00 PARTITION OF test FOR VALUES WITH (MODULUS 2, 
REMAINDER 0);
CREATE TABLE test_p01 PARTITION OF test FOR VALUES WITH (MODULUS 2, 
REMAINDER 1);
CREATE INDEX idx_test_a ON test (a);
CREATE INDEX idx_test_b ON test (b);

INSERT INTO test (SELECT i,i FROM generate_series(1, 1000000) AS i);

ANALYZE;
-- test.sql --

and

UPDATE test SET b = 1 WHERE a = ?
DELETE FROM test WHERE a = ?

both shows that all partitions are scanned;

  Update on test
    Update on test_p00
    Update on test_p01
    ->  Index Scan using test_p00_a_idx on test_p00
          Index Cond: (a = 1)
    ->  Index Scan using test_p01_a_idx on test_p01
          Index Cond: (a = 1)

Using prune_v32 and runtime_v11 with conflicts resolved.

Best regards,
  Jesper




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  Cc: jesper.pedersen@redhat.com, david.rowley@2ndquadrant.com, rajkumar.raghuwanshi@enterprisedb.com, memissemerson@gmail.com, alvherre@alvh.no-ip.org, Langote_Amit_f8@lab.ntt.co.jp, robertmhaas@gmail.com, sulamul@gmail.com, dilipbalaut@gmail.com
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