题目
第2题
A.SELECT 课程名称,SUM(成绩)AS分数 FROM curriculum, grade WHERE curriculum.课程编号= grade.课程编号 GROUP BY课程名称
B.SELECT 课程名称,MAX(成绩)分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY课程名称
C.SELECT 课程名称,SUM(成绩)分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称
D.SELECT 课程名称,MAX(成绩)AS分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称
第3题
A.SELECT 课程名称,SUM(成绩)AS分数 FROM curriculum, grade WHERE curriculum.课程编号= grade.课程编号 GROUP BY课程名称
B.SELECT 课程名称,MAX(成绩)分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY课程名称
C.SELECT 课程名称,SUM(成绩)分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称
D.SELECT 课程名称,MAX(成绩)AS分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称
第4题
第5题
第6题
A.并
B.交
C.乘积
D.连接
第7题
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