create view community_view as select *, (select name from user_ u where c.creator_id = u.id) as creator_name, (select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers, (select count(*) from post p where p.community_id = c.id) as number_of_posts from community c; create view community_moderator_view as select *, (select name from user_ u where cm.user_id = u.id) as user_name from community_moderator cm; create view community_follower_view as select *, (select name from user_ u where cf.user_id = u.id) as user_name from community_follower cf;