帮助我在create view maxclassincome as select b.bclass,b.bname,sum(r.rquantity*b.bprice) class_total_income from book b join retailorder r on r.bno=b.bno group by b.bclass,b.bname having sum(r.rquantity*b.bprice)=(select max(r.rquantity*b.bprice) from( select b.bclass, sum(r.rquantity*b.bprice) from book b join retailorder r on b.bno=r.bno group by b.bclass )分别插入五个数据

当您需要将上述语句插入五个不同的数据时，您可以按照以下步骤进行操作：

1. 打开您的数据库管理工具（如MySQL Workbench）并连接到您的数据库。
2. 打开一个新的查询窗口。
3. 复制以下SQL语句并粘贴到查询窗口中：

insert into book (bno, bclass, bname, bprice) values 
(1, 'Class A', 'Book A', 10),
(2, 'Class A', 'Book B', 15),
(3, 'Class B', 'Book C', 20),
(4, 'Class B', 'Book D', 25),
(5, 'Class C', 'Book E', 30);

4. 执行上述SQL语句，将五个数据插入到book表中。
5. 复制以下SQL语句并粘贴到查询窗口中：

insert into retailorder (ono, bno, rquantity) values
(1, 1, 5),
(2, 2, 10),
(3, 3, 15),
(4, 4, 20),
(5, 5, 25),
(6, 1, 30),
(7, 2, 35),
(8, 3, 40),
(9, 4, 45),
(10, 5, 50);

6. 执行上述SQL语句，将十个数据插入到retailorder表中。
7. 复制以下SQL语句并粘贴到查询窗口中：

create view maxclassincome as
select b.bclass, b.bname, sum(r.rquantity*b.bprice) class_total_income
from book b join retailorder r on r.bno=b.bno
group by b.bclass, b.bname
having sum(r.rquantity*b.bprice) = (
  select max(r.rquantity*b.bprice)
  from (
    select b.bclass, sum(r.rquantity*b.bprice)
    from book b join retailorder r on b.bno=r.bno
    group by b.bclass
  ) t
);

8. 执行上述SQL语句，创建名为maxclassincome的视图，并显示结果。