调试中...
调试中...
题目描述
题目描述
题解
题解
提交记录
提交记录
代码
代码
测试用例
测试用例
测试结果
测试结果
行 1，列 1
students =
| student_id | name | major | | ---------- | ------- | ---------------- | | 1 | Alice | Computer Science | | 2 | Bob | Computer Science | | 3 | Charlie | Mathematics | | 4 | David | Mathematics |
courses =
| course_id | name | credits | major | | --------- | --------------- | ------- | ---------------- | | 101 | Algorithms | 3 | Computer Science | | 102 | Data Structures | 3 | Computer Science | | 103 | Calculus | 4 | Mathematics | | 104 | Linear Algebra | 4 | Mathematics |
enrollments =
| student_id | course_id | semester | grade | | ---------- | --------- | --------- | ----- | | 1 | 101 | Fall 2023 | A | | 1 | 102 | Fall 2023 | A | | 2 | 101 | Fall 2023 | B | | 2 | 102 | Fall 2023 | A | | 3 | 103 | Fall 2023 | A | | 3 | 104 | Fall 2023 | A | | 4 | 103 | Fall 2023 | A | | 4 | 104 | Fall 2023 | B |