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完了//私の試みが機能しない
SELECT * FROM Placement, Internship WHERE Placement.i_code=Internship.code WHERE Student.f_id <> Internship.f_id
【INNERJOIN、LEFTJOINは使用できません】
関係表:
![関係表] [1]
これはあなたが必要なものですか?
SELECT Student.* FROM Student, Placement, InterShip WHERE Placement.i_code=Internship.code AND Placement.s_code=Student.id AND Student.f_id <> Internship.f_id
ところで:なぜあなたは結合を使いたくないのですか?