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