1)统计离散数学的成绩分布情况,即按照各分数段统计人数;
时间: 2024-02-17 10:00:51 浏览: 28
好的,下面是一个简单的存储过程,用于统计离散数学的成绩分布情况。假设我们有以下表结构:
学生表(Student):学生ID(StudentID)、姓名(Name)
课程表(Course):课程ID(CourseID)、课程名称(CourseName)
选课表(CourseSelection):学生ID(StudentID)、课程ID(CourseID)、成绩(Score)
存储过程如下:
```
CREATE PROCEDURE DiscreteMathDistribution
AS
BEGIN
-- 声明变量
DECLARE @score1 INT = 0, @score2 INT = 0, @score3 INT = 0, @score4 INT = 0, @score5 INT = 0;
-- 统计各分数段的人数
SELECT
@score1 = COUNT(*)
FROM
CourseSelection
WHERE
CourseID = (SELECT CourseID FROM Course WHERE CourseName = '离散数学') AND Score < 60;
SELECT
@score2 = COUNT(*)
FROM
CourseSelection
WHERE
CourseID = (SELECT CourseID FROM Course WHERE CourseName = '离散数学') AND Score >= 60 AND Score < 70;
SELECT
@score3 = COUNT(*)
FROM
CourseSelection
WHERE
CourseID = (SELECT CourseID FROM Course WHERE CourseName = '离散数学') AND Score >= 70 AND Score < 80;
SELECT
@score4 = COUNT(*)
FROM
CourseSelection
WHERE
CourseID = (SELECT CourseID FROM Course WHERE CourseName = '离散数学') AND Score >= 80 AND Score < 90;
SELECT
@score5 = COUNT(*)
FROM
CourseSelection
WHERE
CourseID = (SELECT CourseID FROM Course WHERE CourseName = '离散数学') AND Score >= 90;
-- 输出结果
PRINT '成绩在0-59分之间的人数:' + CAST(@score1 AS VARCHAR(10));
PRINT '成绩在60-69分之间的人数:' + CAST(@score2 AS VARCHAR(10));
PRINT '成绩在70-79分之间的人数:' + CAST(@score3 AS VARCHAR(10));
PRINT '成绩在80-89分之间的人数:' + CAST(@score4 AS VARCHAR(10));
PRINT '成绩在90分以上的人数:' + CAST(@score5 AS VARCHAR(10));
END
```
这个存储过程会输出离散数学成绩在各个分数段的人数。你可以根据实际情况进行修改。
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