The following bug has been logged on the website:
Bug reference: 16386
Logged by: klement szabolcs
Email address: szittya314(at)gmail(dot)com
PostgreSQL version: 10.12
Operating system: centos 7
Description:
create table b (aaa int primary key,bb date );
create table A (id int primary key) inherits (B);
alter table a alter column aaa drop not null;
after i made pg_dump and pg_restore the not null contraint isexist on table
a;