| From: | Nikita Malakhov <hukutoc(at)gmail(dot)com> |
|---|---|
| To: | Andrei Lepikhov <lepihov(at)gmail(dot)com> |
| Cc: | Ba Jinsheng <bajinsheng(at)u(dot)nus(dot)edu>, "pgsql-performance(at)lists(dot)postgresql(dot)org" <pgsql-performance(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Performance of Query 60 on TPC-DS Benchmark |
| Date: | 2024-11-29 14:27:18 |
| Message-ID: | CAN-LCVPco=XwNyj2eCM3KAmnR9sSqbpyS0dyKAiDuzQ3C1SFxg@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-performance |
Hi!
Please check the following proposal (patch in attach).
The main idea is to reject only obviously worse paths (costs considerably
more
than compared one), and to pass pre-calculated startup cost to precheck
function
for more accurate comparison.
>
> --
Regards,
Nikita Malakhov
Postgres Professional
The Russian Postgres Company
https://postgrespro.ru/
| Attachment | Content-Type | Size |
|---|---|---|
| v1-0001-ppath-precheck.patch | application/octet-stream | 4.7 KB |
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