Man ir grāmatu galds
BookID BookName
1 BookA
2 BookB
3 BookC
Biedru tabula
MemberID MemberName
1 MemberA
2 MemberB
Aizņemties tabulu
MemberID BookID
1 1
1 2
2 1
2 2
Es vēlos uzzināt piecas populāras Memeber A grāmatas
Es izmēģināju šādu vaicājumu
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
Bet tas man nesniedz patieso rezultātu.
Jebkurš ieteikums būtu pateicīgs.