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关于#sql#的问题:sql中有人知道这些问题大概是怎么解答吗?
2022-06-21 15:36:00 【CSDN问答】
sql中有人知道这些问题大概是怎么解答吗?下面还有几个问题需要解答一下?
列出存在有90分以上成绩的课程编号。
(2)输出信科系的人数。
(3)显示‘陈小明’教师任课的学生姓名,课程名,成绩。
(4)列出成绩比平均成绩低的同学的学号。
(5)输出选修“C语言”课程的男同学的成绩。


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