Hi team. Latest time we faced several issues which wouldn't arise provided we have possibility to use constants in foreign key constraints. brief example where it would be helpful:
table_a ( id uuid, parent_id uuid, is_deleted boolean ) having possibility of FK (parent_id, false) to (id, is_deleted) would disallow setting parent record deleted flag to true if they have children, or insert record with is_deleted = true parent. Regards, Aliaksei.