sql-server-2008 - 创建一个视图以获取在每门课程中获得最高分的学生的姓名

Question

课程表：courseId，courseName，tutor
学生表：studentId，studentName
Marks 表：marksId，studentId，courseId，marks
如果需要更多信息请评论

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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