嵌套查詢

嵌套查詢 select snamefrom student where sno in( select sno from sc where cno=‘002’);web --查詢與'劉晨'在同一個系學習的學生select*from `+student`where sdept in(select sdeptfrom `student`where sname='劉晨') 查詢選修課程名爲’信息系統‘

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