I tested both postgres 12.3 and 13 beta 1 and the results are the same.
I could read the pg_ tables instead of the views in the information_schema
but that's the SQL standard schema so I'd prefer to stick to that.
I reported this issue because the performance gap is huge and that could be
useful
I'm facing performance issues migrating from postgres 10 to 12 (also from 11
to 12) even with a new DB.
Th performance difference is huge 300ms in pg10 vs 3 minutes in pg12.
I have a view that abstracts the data in the database:
CREATE OR REPLACE VIEW public.my_constraints
AS SELECT lower(tc.cons
