alter table local_user add column matrix_user_id text; update local_user lu set matrix_user_id = p.matrix_user_id from person p where p.id = lu.person_id; drop view person_alias_1, person_alias_2; alter table person drop column matrix_user_id; -- Regenerate the person_alias views create view person_alias_1 as select * from person; create view person_alias_2 as select * from person;