| From: | Alena Rybakina <a(dot)rybakina(at)postgrespro(dot)ru> |
|---|---|
| To: | Alexander Lakhin <exclusion(at)gmail(dot)com>, 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> |
| Subject: | Re: POC, WIP: OR-clause support for indexes |
| Date: | 2024-11-28 19:03:36 |
| Message-ID: | ed2b909c-35d4-4a39-ac38-8a15634a281b@postgrespro.ru |
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| Lists: | pgsql-hackers |
Hi! Thank you for the case.
On 28.11.2024 21:00, Alexander Lakhin wrote:
> 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
>
>
I found out what the problem is index scan method was not generated. We
need to check this during OR clauses for SAOP transformation.
There is a patch to fix this problem.
--
Regards,
Alena Rybakina
Postgres Professional
| Attachment | Content-Type | Size |
|---|---|---|
| bugfix.diff | text/x-patch | 1.3 KB |
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