```sql
select publishingHouse.title, count(publishingHouse.title)
    from publishingHouse JOIN book ON publishingHouse.id=book.publishingHouse_id
    group by publishingHouse.title
        having count(publishingHouse.title) = (select max(publishingHouse.num) as max_count
            from (select publishingHouse.title, count(publishingHouse.title) as num
                            from publishingHouse JOIN book ON publishingHouse.id=book.publishingHouse_id
                             group by publishingHouse.id
                      )
                  publishingHouse
              );




 select publishingHouse.title
    from book
    JOIN author
    	ON book.author_id = author.id
    JOIN publishingHouse
    	ON book.publishingHouse_id = publishingHouse.id
    WHERE author.title NOT IN ('author1', 'author2')



 select * from book
	where book.issueDate IS NULL
    having book.return_date = (
      select min(book.return_date) from book
    )
;


 select * from book
	where book.issueDate IS NULL AND book.return_date < CAST(CURRENT_DATE AS DATE)
    	OR book.return_date < book.issueDate
;
```