| From: | Yasuo Honda <yasuo(dot)honda(at)gmail(dot)com> |
|---|---|
| To: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Peter Smith <smithpb2250(at)gmail(dot)com>, vignesh C <vignesh21(at)gmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, "Gregory Stark (as CFM)" <stark(dot)cfm(at)gmail(dot)com>, David Geier <geidav(dot)pg(at)gmail(dot)com>, Sergei Kornilov <sk(at)zsrv(dot)org>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Marcos Pegoraro <marcos(at)f10(dot)com(dot)br>, Robert Haas <robertmhaas(at)gmail(dot)com>, Zhihong Yu <zyu(at)yugabyte(dot)com>, David Steele <david(at)pgmasters(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Pavel Trukhanov <pavel(dot)trukhanov(at)gmail(dot)com> |
| Subject: | Re: pg_stat_statements and "IN" conditions |
| Date: | 2024-03-24 14:36:38 |
| Message-ID: | CAKmOUTn74jTQAk0u2FUMsGjgrNugLOwkyic2MPkbOJtcQrufeA@mail.gmail.com |
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| Lists: | pgsql-hackers |
Thanks for the information. I can apply these 4 patches from
0eb23285a2 . I tested this branch from Ruby on Rails and it gets some
unexpected behavior from my point of view.
Setting pg_stat_statements.query_id_const_merge_threshold = 5 does not
normalize sql queries whose number of in clauses exceeds 5.
Here are test steps.
https://gist.github.com/yahonda/825ffccc4dcb58aa60e12ce33d25cd45#expected-behavior
It would be appreciated if I can get my understanding correct.
--
Yasuo Honda
On Sun, Mar 24, 2024 at 3:20 AM Dmitry Dolgov <9erthalion6(at)gmail(dot)com> wrote:
> Sure, I can rebase, give me a moment. If you don't want to wait, there
> is a base commit in the patch, against which it should be applied
> without issues, 0eb23285a2.
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