| From: | Andy Fan <zhihuifan1213(at)163(dot)com> |
|---|---|
| To: | David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Andy Fan <zhihui(dot)fan1213(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Zhang Mingli <zmlpostgres(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: make add_paths_to_append_rel aware of startup cost |
| Date: | 2024-02-16 01:19:05 |
| Message-ID: | 87sf1tgq3c.fsf@163.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> I'd be more happy using this one as percentage-wise, the cost
> difference is much larger.
+1 for the percentage-wise.
>
> I checked that the t2.thounsand = 0 query still tests the cheap
> startup paths in add_paths_to_append_rel().
I get the same conclusion here.
>
> So, if nobody has any better ideas, I'm just going to push the " and
> t2.thousand = 0" adjustment.
LGTM.
--
Best Regards
Andy Fan
| From | Date | Subject | |
|---|---|---|---|
| Next Message | shihao zhong | 2024-02-16 01:35:12 | Re: Fix incorrect PG_GETARG in pgcrypto |
| Previous Message | Tatsuo Ishii | 2024-02-16 00:58:41 | Re: When extended query protocol ends? |