| From: | Richard Guo <guofenglinux(at)gmail(dot)com> |
|---|---|
| To: | Alexander Lakhin <exclusion(at)gmail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, David Rowley <dgrowleyml(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Peter Geoghegan <pg(at)bowt(dot)ie>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: On disable_cost |
| Date: | 2024-09-06 09:51:05 |
| Message-ID: | CAMbWs4_3V+VOt8wus-e37Rt3gmhPVj0OFHYkei+XLpdHmeWNng@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Sep 6, 2024 at 5:27 PM Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
> On Fri, Sep 6, 2024 at 5:00 PM Alexander Lakhin <exclusion(at)gmail(dot)com> wrote:
> > static void
> > label_sort_with_costsize(PlannerInfo *root, Sort *plan, double limit_tuples)
> (I'm a little surprised that this does not cause any plan diffs in the
> regression tests.)
Ah I see. label_sort_with_costsize is only used to label the Sort
node nicely for EXPLAIN, and usually we do not display the cost
numbers in regression tests.
Thanks
Richard
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