Mysql SQL查找最受欢迎的书籍

我在桌子上有书

BookID BookName
 1       BookA
 2       BookB
 3       BookC

成员表

MemberID MemberName
 1          MemberA
 2          MemberB

借书台

MemberID BookID
 1         1
 1         2
 2         1
 2         2

我想找出Memeber A写的五本畅销书

我尝试了以下查询

SELECT        TOP (5) Book.BookTitle, COUNT(*) AS Count, Member_1.MemberName
FROM            Book INNER JOIN
                         Borrow ON Book.BookID = Borrow.BookID INNER JOIN
                         Member ON Borrow.MemberID = Member.MemberID INNER JOIN
                         Member AS Member_1 ON Borrow.MemberID = Member_1.MemberID
                         where Member.MemberName='A'
GROUP BY Book.BookTitle, Member_1.MemberName
ORDER BY Count DESC

但这并没有给我实际的结果

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如果您有任何建议，我们将不胜感激。

我认为您的加入太多了：

SELECT TOP (5) b.BookTitle, COUNT(*) AS Count, m.MemberName
FROM Book b INNER JOIN
     Borrow bo
     ON bo.BookID = b.BookID INNER JOIN
     Member m
     ON bo.MemberID = m.MemberID 
WHERE m.MemberName = 'A'
GROUP BY b.BookTitle, m.MemberName
ORDER BY Count DESC;

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注意：此语法通常与SQL Server关联，在MySQL中不起作用。在MySQL中，您将使用

LIMIT 5

而不是

SELECT TOP（5）

您将问题标记为MySQL，但代码不会在MySQL中运行。我很困惑。结果和你期望的有什么不同？你为什么要加入借款会员两次？你怎么称呼一位会员的畅销书？你的意思是他们不止一次地借同一本书，你根据会员借书的频率对这些书进行排名？