jam-cloud/db/up/music_session_constraints.sql

alter table music_sessions_comments drop constraint music_sessions_comments_music_session_id_fkey;
alter table music_sessions_comments add constraint ms_comments_ms_history_fkey foreign key (music_session_id)
references music_sessions_history(music_session_id) match simple
ON UPDATE NO ACTION ON DELETE CASCADE;

alter table music_sessions_likers drop constraint music_sessions_likers_music_session_id_fkey;
alter table music_sessions_likers add constraint ms_likers_ms_history_fkey foreign key (music_session_id)
references music_sessions_history(music_session_id) match simple
ON UPDATE NO ACTION ON DELETE CASCADE;