SQL 50題

11.查詢兩⻔門及其以上不不及格課程的同窗的學號，姓名及其平均成績 +先把不及格的抓出來找兩個以上不及格的html select Student.Sid,Sname,ssc.ave from Student, (select Sid,avg(score) as ave from SC group by Sid)ssc where Student.Sid = ssc.Sid

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