text: 
  create table yome_ship(
          member_id bigint not null,
          sort_no smallint not null,
          ship_id int not null,
          primary key (member_id, sort_no)
  ) engine = ARIA, default charset = utf8mb4;
  
  insert into yome_ship (member_id, ship_id, sort_no) select member_id, yome, 1 from user_settings where yome is not null;
  
  alter table user_settings drop yome;
  