drop materialized view private_message_mview;
drop view private_message_view;

alter table private_message 
drop column ap_id, 
drop column local;

create view private_message_view as 
select        
pm.*,
u.name as creator_name,
u.avatar as creator_avatar,
u2.name as recipient_name,
u2.avatar as recipient_avatar
from private_message pm
inner join user_ u on u.id = pm.creator_id
inner join user_ u2 on u2.id = pm.recipient_id;

create materialized view private_message_mview as select * from private_message_view;

create unique index idx_private_message_mview_id on private_message_mview (id);