sql select语句，正确选择语句的指导

Question

我应该编写一个 SQL 查询，该查询将选择所有当前已借出且已过期且应归还的图书，这些图书的价值大于来自图书馆系统的 $10.00。我应该返回借款人的姓名、地址、邮政编码和电话号码、负责交易的图书管理员的姓名和电话号码、图书归还日期以及姓名、费用和 ISBN 号的书。我的查询应该按返回日期降序排列。

这是我写的

Select a.returndate as booklended ,a.isbn_number as booklended, b. as borrower,          
                    b.address as borrower, b.postalcode as borrower, b. phonenumber as 
                    borrower, c.name as     librarian, c.phonenumber as librarian
                from booklended.a, librarian.c, borrower.b
   where a. librarian id= c.librarianid
       and a.librarycard = b.librarycard
         and returndate < curdate()
         and cost  > 10.00
                order by a. returndate desc;

但是我收到了这个错误 5：无效的模式名称：BOOKLENDED in statement [Select a.returndate as booklended ,a.isbn_number as booklended, b.作为借款人，b.address 作为借款人，b.postalcode 作为借款人，b. phonenumber 作为借用者，c.name 作为图书管理员，c.phonenumber 作为图书管理员

来自 booklended.a]

能否请我获得有关如何纠正此问题的指南。谢谢

Answer 1

试试这个：

Select a.returndate as booklended ,a.isbn_number as booklended,     
b.address as borrower, b.postalcode as borrower, b.phonenumber as 
borrower, c.name as librarian, c.phonenumber as librarian
from booklended a, librarian c, borrower b
where a. librarian id= c.librarianid
and a.librarycard = b.librarycard
and returndate < curdate()
and cost  > 10.00
order by a.returndate desc;

Answer 2

试试这个查询

Select a.returndate as booklended ,a.isbn_number as isbnNumber, b.[YOUR COLUMNNAME FROM BORROWER TABLE] as borrower,        b.address as borrower, b.postalcode as borrower, b. phonenumber as borrower, c.name as     librarian, c.phonenumber as librarian

  from booklended as a, librarian as c, borrower as b
   where a.librarian id= c.librarianid
       and a.librarycard = b.librarycard
         and returndate < curdate()
         and cost  > 10.00
                order by a. returndate desc;