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Tìm danh sách môn học chưa đăng ký của sinh viên có MSV = 10
SELECT * FROM [Mon Hoc]
WHERE [Ma Mon Hoc] NOT IN (
SELECT A.[Ma Mon Hoc]
FROM (
SELECT S.*, B.[Ma Mon Hoc], B.[Thoi Gian Dang Ky]
FROM
[Sinh Vien] S RIGHT JOIN [Bang Dang Ky] B ON
S.[Ma Sinh Vien] = B.[Ma Sinh Vien]
) A
WHERE A.[Ma Sinh Vien] = 10);
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