Re: POC, WIP: OR-clause support for indexes

From: Alexander Lakhin <exclusion(at)gmail(dot)com>
To: Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Andrei Lepikhov <lepihov(at)gmail(dot)com>
Cc: jian he <jian(dot)universality(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Nikolay Shaplov <dhyan(at)nataraj(dot)su>, pgsql-hackers(at)lists(dot)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org, Peter Geoghegan <pg(at)bowt(dot)ie>, Marcos Pegoraro <marcos(at)f10(dot)com(dot)br>, teodor(at)sigaev(dot)ru, Peter Eisentraut <peter(at)eisentraut(dot)org>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>, Alena Rybakina <a(dot)rybakina(at)postgrespro(dot)ru>
Subject: Re: POC, WIP: OR-clause support for indexes
Date: 2024-11-28 18:00:01
Message-ID: 8174de69-9e1a-0827-0e81-ef97f56a5939@gmail.com
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Hello Alexander,

21.11.2024 09:34, Alexander Korotkov wrote:
> I'm going to push this if no objections.

Please look at the following query, which triggers an error after ae4569161:
SET random_page_cost = 1;
CREATE TABLE tbl(u UUID);
CREATE INDEX idx ON tbl USING HASH (u);
SELECT COUNT(*) FROM tbl WHERE u = '00000000000000000000000000000000' OR
  u = '11111111111111111111111111111111';

ERROR:  XX000: ScalarArrayOpExpr index qual found where not allowed
LOCATION:  ExecIndexBuildScanKeys, nodeIndexscan.c:1625

Best regards,
Alexander

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