On Tue, 28 Mar 2023 at 17:54, Maxim Boguk <maxim.boguk@gmail.com> wrote:
> During an attempt to create a minimal test case I discovered an effect for which I have no explanation:
> (all tests with jit=on):
>
> Run EXPLAIN on the single partition, so far expected results...
> explain select * from interview_review_info_archive_p028;
> QUERY PLAN
> -----------------------------------------------------------------------------------------------
> Seq Scan on interview_review_info_archive_p028 (cost=0.00..361819.08 rows=34546848 width=40)
> JIT:
> Functions: 2
> Options: Inlining true, Optimization true, Expressions true, Deforming true
It could be something like a dropped column forcing projection of the
SELECT *. You might want to try without SELECT * using some subset of
columns instead.
Check if columns have been dropped with:
select attnum,attname from pg_Attribute where
attrelid='interview_review_info_archive_p028'::Regclass;
David
