Re: Difference in execution plans pg12 vs pg14

On 12/10/21 17:51, Дмитрий Иванов wrote:
> Yes, I did.
> I reset table statistics, did (VACUUM) ANALYZE, recreated index. Nothing
> changes.
> I've deleted the database many times, dozens of times. Maybe something
> is broken?

How did you do the upgrade?

> --
> Regards, Dmitry!
>
>
> сб, 11 дек. 2021 г. в 06:13, Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
> <mailto:adrian(dot)klaver(at)aklaver(dot)com>>:
>
> On 12/10/21 17:00, Дмитрий Иванов wrote:
> > Afternoon. I was able to make the necessary changes to my base
> needed to
> > migrate win_pg12 to debian pg14.
> > But there is a new problem, which was not there at the initial
> stage so
> > I checked:
> >
> > win_pg12:
> > ->  Index Scan using index_class_tree_full on class c
>  (cost=0.28..2.50
> > rows=1 width=235) (actual time=0.030..0.032 rows=1 loops=1)
> >                       Index Cond: (id = 650)
> > debian_pg14:
> > ->  Index Scan using index_class_tree_full on class c
>  (cost=0.28..2.50
> > rows=1 width=235) (actual time=842.795..842.796 rows=1 loops=1)
> >                       Index Cond: (id = 650)
> >
> > I'm wondering where to dig next...
>
> Did you run ANALYZE(updates table stats) on the 14 instance after doing
> the upgrade?
>
> > --
> > Best regards, Dmitry!
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com