哪错了?select score1.学号,score1.课程号,course.成绩 from score1,course where score1.课程号=course

问题描述:

哪错了?select score1.学号,score1.课程号,course.成绩 from score1,course where score1.课程号=course

select score1.学号,score1.课程号,course.成绩 from score1,course where (score1.学号=course.学号) and score1.课程号=course