[英]Mysql, inner join and subquery
嗨,我需要這個問題的幫助:
計算並顯示每個代表的編號和姓名,以及他們獲得的學分以及課程代碼,姓名和學分。
delegate (StudentNumber,StudentName,Phone)
session (Code,Date,Room)
take (StudentNumber, CourseCode, Grade)
course (CourseCode, CourseName,CourseCredits,)
module (ModuleCode, ModuleName, Price,Credits,Course_Code(FK))
這是我到目前為止的內容:
SELECT no,name FROM delegate
INNER JOIN module,take
ON module.code = take.code
INNER JOIN course
ON CourseCredits = Credits
到目前為止,這就是我的全部,任何幫助將不勝感激,我知道我必須使用子查詢,但不太確定在哪里
SELECT no,name FROM delegate
INNER JOIN take ON take.StudentNumber = delegate.StudentNumber
INNER JOIN module ON module.code = take.code
INNER JOIN course ON CourseCredits = Credits
有幫助嗎?
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