On Tue, 11 May 2021 at 12:49, David Rowley wrote:
>
> On Tue, 11 May 2021 at 11:34, Jonathan Chen wrote:
> > PG13 LIMIT 1 : https://explain.depesz.com/s/GFki
> > PG13 no LIMIT: https://explain.depesz.com/s/U4vR
> > PG12 LIMIT 1 : https://explain.depesz.com/s/JAp4
>
> The difference is coming from
On Tue, 11 May 2021 at 11:34, Jonathan Chen wrote:
> PG13 LIMIT 1 : https://explain.depesz.com/s/GFki
> PG13 no LIMIT: https://explain.depesz.com/s/U4vR
> PG12 LIMIT 1 : https://explain.depesz.com/s/JAp4
The difference is coming from the fact that PostgreSQL 13 has
incremental sort and can use th
Hmm, there's a bit of text-mangling.
Let's use https://explain.depesz.com.
PG13 LIMIT 1 : https://explain.depesz.com/s/GFki
PG13 no LIMIT: https://explain.depesz.com/s/U4vR
PG12 LIMIT 1 : https://explain.depesz.com/s/JAp4
--
Jonathan Chen
Hi,
Here's a bit more detail:
select version();
version
-
PostgreSQL 13.2 on amd64-portbld-freebsd12.2, compiled by FreeBSD
Hi,
On Tue, 11 May 2021 at 10:34, Tom Lane wrote:
[...]
> As Adrian noted, you haven't provided enough detail to let anyone
> offer more than generalities.
I'll be providing the output of EXPLAIN (ANALYZE, BUFFERS) in a separate post.
> However, in the spirit of generalities ...
[.. helpful exp
Jonathan Chen writes:
> I am running Postgresql 13 as a backend for Odoo, and I believe I have
> discovered a regression with the query engine.
As Adrian noted, you haven't provided enough detail to let anyone
offer more than generalities. However, in the spirit of generalities ...
ORDER BY wit
Hi,
sorry to jump in, but looks like I have a similar pb on a 12.6 instance.
on a quite simple request,
with limit 1000 it takes 27ms, and with limit 10, it takes 145000 ms
looking at both the explain analyze plans, there is a huge difference:
with limit 1000, postgres do an optimization of the pl
On 5/10/21 2:13 PM, Jonathan Chen wrote:
Hi,
I am running Postgresql 13 as a backend for Odoo, and I believe I have
discovered a regression with the query engine.
See here:
https://wiki.postgresql.org/wiki/Slow_Query_Questions
for the information needed to get an answer to this sort of quest
