创建视图以获取在每个课程中获得最大分数的学生的姓名

Question

课程表：courseId，courseName，导师
学生表：studentId，studentName
标记表：marksId，studentId，courseId，marks
如果需要更多信息请注释

＆LT; \＆BR GT;

CREATE VIEW maxmarks 
AS
SELECT b.studentName,courseId from [dbo].[zz_16_Marks_tbl] a,[dbo].[zz_16_Student_tbl] b
WHERE a.studentId=b.studentId AND marks in(
SELECT MAX(marks),courseId FROM [dbo].[zz_16_Marks_tbl] GROUP BY courseId)

Answer 1

CREATE VIEW maxmarks 
AS
WITH CTE AS (SELECT MAX(marks),courseId FROM [dbo].[zz_16_Marks_tbl] GROUP BY courseId )
SELECT b.studentName,a.courseId 
from [dbo].[zz_16_Marks_tbl] a
INNER JOIN [dbo].[zz_16_Student_tbl] b ON a.studentId=b.studentId 
INNER JOIN CTE c ON a.courseId =c.courseId and a.marks=b.marks