Описание таблицы boi.boi_authors
create table boi_authors
(
bo_id varchar(20) not null,
author_id varchar(20) not null,
primary key (bo_id, author_id)
);
create table boi_authors
(
bo_id varchar(20) not null,
author_id varchar(20) not null,
primary key (bo_id, author_id)
);