Re: Difference in execution plans pg12 vs pg14

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