Create student view - v0 by Vercel

USE School GO Create Table Student( Sno char(12) Primary Key, Sname char(10) NOT NULL, Ssex char(2), Sbirthday date, Sdept char(2))

Create Table Course( Cno char(4) Primary Key, Cname char(20) NOT NULL, Cpno char(4) foreign key(Cpno) references Course(Cno), Ccredit int)

CREATE TABLE SC ( Sno CHAR(12), Cno CHAR(4), Score INT, PRIMARY KEY (Sno, Cno), FOREIGN KEY (Sno) REFERENCES Student(Sno), FOREIGN KEY (Cno) REFERENCES Course(Cno) );创建选修课程学分总数大于等于 10 学分的视图，包括学生学号、姓名、学分数。

Show full message

266d ago

To create a view that includes students who have a total credit score of 10 or more from their selected courses, including their student number, name, and total credit score, we can use the following SQL statement:

CREATE VIEW StudentCredits AS
SELECT 
    S.Sno,
    S.Sname,
    SUM(C.Ccredit) AS TotalCredits
FROM 
    Student S
    JOIN SC ON S.Sno = SC.Sno
    JOIN Course C ON SC.Cno = C.Cno
GROUP BY 
    S.Sno, S.Sname
HAVING 
    SUM(C.Ccredit) >= 10;

Let's break down this SQL statement:

We start by creating a view named StudentCredits.
In the SELECT clause:
- We select the student number (Sno) and name (Sname) from the Student table.
- We calculate the sum of credits (Ccredit) from the Course table and alias it as TotalCredits.
In the FROM clause:
- We start with the Student table and join it with the SC (Student-Course) table using the student number.
- We then join the result with the Course table using the course number.
The GROUP BY clause groups the results by student number and name. This is necessary because we're using an aggregate function (SUM) in the SELECT clause.
Finally, the HAVING clause filters the groups, keeping only those where the sum of credits is 10 or more.

This view will show all students who have selected courses with a total credit score of 10 or more, along with their student number, name, and total credit score.

266d ago

USE School GO Create Table Student( Sno char(12) Primary Key, Sname char(10) NOT NULL, Ssex char(2), Sbirthday date, Sdept char(2))

Create Table Course( Cno char(4) Primary Key, Cname char(20) NOT NULL, Cpno char(4) foreign key(Cpno) references Course(Cno), Ccredit int)

Show full message

266d ago

CREATE VIEW StudentCredits AS
SELECT 
    S.Sno,
    S.Sname,
    SUM(C.Ccredit) AS TotalCredits
FROM 
    Student S
    JOIN SC ON S.Sno = SC.Sno
    JOIN Course C ON SC.Cno = C.Cno
GROUP BY 
    S.Sno, S.Sname
HAVING 
    SUM(C.Ccredit) >= 10;

Let's break down this SQL statement:

We start by creating a view named StudentCredits.
In the SELECT clause:
- We select the student number (Sno) and name (Sname) from the Student table.
- We calculate the sum of credits (Ccredit) from the Course table and alias it as TotalCredits.
In the FROM clause:
- We start with the Student table and join it with the SC (Student-Course) table using the student number.
- We then join the result with the Course table using the course number.
The GROUP BY clause groups the results by student number and name. This is necessary because we're using an aggregate function (SUM) in the SELECT clause.
Finally, the HAVING clause filters the groups, keeping only those where the sum of credits is 10 or more.

This view will show all students who have selected courses with a total credit score of 10 or more, along with their student number, name, and total credit score.