[SS] TP1 & TP2 - FALEK Wael

submissions/SS/falek_wael/tp1_solutions.sql

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+DROP DATABASE IF EXISTS university_db;
+CREATE DATABASE university_db;
+USE university_db;
+
+-- Create tables
+
+CREATE TABLE departments (
+    department_id INT AUTO_INCREMENT PRIMARY KEY,
+    department_name VARCHAR(100) NOT NULL,
+    building VARCHAR(50),
+    budget DECIMAL(12, 2),
+    department_head VARCHAR(100),
+    creation_date DATE
+);
+
+CREATE TABLE professors (
+    professor_id INT AUTO_INCREMENT PRIMARY KEY,
+    last_name VARCHAR(50) NOT NULL,
+    first_name VARCHAR(50) NOT NULL,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    phone VARCHAR(20),
+    department_id INT,
+    hire_date DATE,
+    salary DECIMAL(10, 2),
+    specialization VARCHAR(100),
+    FOREIGN KEY (department_id) REFERENCES departments(department_id)
+        ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+CREATE TABLE students (
+    student_id INT AUTO_INCREMENT PRIMARY KEY,
+    student_number VARCHAR(20) UNIQUE NOT NULL,
+    last_name VARCHAR(50) NOT NULL,
+    first_name VARCHAR(50) NOT NULL,
+    date_of_birth DATE,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    phone VARCHAR(20),
+    address TEXT,
+    department_id INT,
+    level VARCHAR(20),
+    enrollment_date DATE DEFAULT (CURRENT_DATE),
+    FOREIGN KEY (department_id) REFERENCES departments(department_id)
+        ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+CREATE TABLE courses (
+    course_id INT AUTO_INCREMENT PRIMARY KEY,
+    course_code VARCHAR(10) UNIQUE NOT NULL,
+    course_name VARCHAR(150) NOT NULL,
+    description TEXT,
+    credits INT NOT NULL,
+    semester INT,
+    department_id INT,
+    professor_id INT,
+    max_capacity INT DEFAULT 30,
+    FOREIGN KEY (department_id) REFERENCES departments(department_id)
+        ON DELETE CASCADE ON UPDATE CASCADE,
+    FOREIGN KEY (professor_id) REFERENCES professors(professor_id)
+        ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+CREATE TABLE enrollments (
+    enrollment_id INT AUTO_INCREMENT PRIMARY KEY,
+    student_id INT NOT NULL,
+    course_id INT NOT NULL,
+    enrollment_date DATE DEFAULT (CURRENT_DATE),
+    academic_year VARCHAR(9) NOT NULL,
+    status VARCHAR(20),
+    UNIQUE(student_id, course_id, academic_year),
+    FOREIGN KEY (student_id) REFERENCES students(student_id)
+        ON DELETE CASCADE ON UPDATE CASCADE,
+    FOREIGN KEY (course_id) REFERENCES courses(course_id)
+        ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE TABLE grades (
+    grade_id INT AUTO_INCREMENT PRIMARY KEY,
+    enrollment_id INT NOT NULL,
+    evaluation_type VARCHAR(30),
+    grade DECIMAL(5, 2),
+    coefficient DECIMAL(3, 2) DEFAULT 1.00,
+    evaluation_date DATE,
+    comments TEXT,
+    FOREIGN KEY (enrollment_id) REFERENCES enrollments(enrollment_id)
+        ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+CREATE INDEX idx_student_dept ON students(department_id);
+CREATE INDEX idx_course_prof ON courses(professor_id);
+CREATE INDEX idx_enroll_student ON enrollments(student_id);
+
+-- Insert data
+
+INSERT INTO departments (department_name, building, budget, department_head, creation_date) VALUES
+('Computer Science', 'Building A', 520000.00, 'Wail Falek', '2015-09-01'),
+('Mathematics', 'Building B', 360000.00, 'Abdemalek Kaddour', '2014-09-01'),
+('Physics', 'Building C', 410000.00, 'Anes Benrahmoune', '2016-09-01'),
+('Civil Engineering', 'Building D', 630000.00, 'Karim Bouzid', '2013-09-01');
+
+INSERT INTO professors (last_name, first_name, email, department_id, salary, specialization, hire_date) VALUES
+('Falek', 'Wail', 'wail.falek@uni.com', 1, 5200.00, 'Artificial Intelligence', '2018-02-10'),
+('Kaddour', 'Abdemalek', 'abdemalek.kaddour@uni.com', 1, 5000.00, 'Databases', '2019-03-15'),
+('Benrahmoune', 'Anes', 'anes.benrahmoune@uni.com', 1, 5400.00, 'Networks', '2017-04-20'),
+('Bouzid', 'Karim', 'karim.bouzid@uni.com', 2, 4700.00, 'Algebra', '2020-01-12'),
+('Rahmani', 'Samira', 'samira.rahmani@uni.com', 3, 4800.00, 'Quantum Physics', '2016-05-18'),
+('Touati', 'Nabil', 'nabil.touati@uni.com', 4, 4900.00, 'Structures', '2015-06-25');
+
+INSERT INTO students (student_number, last_name, first_name, email, department_id, level, date_of_birth) VALUES
+('S101', 'Haddad', 'Youssef', 'youssef.haddad@uni.com', 1, 'L3', '2002-04-10'),
+('S102', 'Benkhaled', 'Amine', 'amine.benkhaled@uni.com', 1, 'L2', '2003-05-12'),
+('S103', 'Zerouki', 'Lina', 'lina.zerouki@uni.com', 2, 'M1', '2001-03-08'),
+('S104', 'Meziane', 'Sara', 'sara.meziane@uni.com', 3, 'L3', '2002-07-21'),
+('S105', 'Mansouri', 'Karim', 'karim.mansouri@uni.com', 1, 'M1', '2001-09-30'),
+('S106', 'Belaid', 'Amel', 'amel.belaid@uni.com', 2, 'L2', '2003-11-14'),
+('S107', 'Cherif', 'Riad', 'riad.cherif@uni.com', 4, 'L3', '2002-02-19'),
+('S108', 'Hamidi', 'Mehdi', 'mehdi.hamidi@uni.com', 3, 'M1', '2001-12-05');
+
+INSERT INTO courses (course_code, course_name, credits, semester, department_id, professor_id) VALUES
+('CS201', 'Programming Fundamentals', 6, 1, 1, 1),
+('CS202', 'Advanced Databases', 6, 2, 1, 2),
+('CS203', 'Computer Networks', 5, 1, 1, 3),
+('MA201', 'Linear Algebra', 5, 1, 2, 4),
+('PH201', 'Physics I', 6, 2, 3, 5),
+('CE201', 'Statics', 5, 1, 4, 6),
+('CS204', 'Machine Learning', 6, 2, 1, 1);
+
+INSERT INTO enrollments (student_id, course_id, academic_year, status) VALUES
+(1,1,'2025-2026','Passed'),
+(1,2,'2025-2026','Passed'),
+(1,3,'2025-2026','In Progress'),
+(2,1,'2025-2026','Passed'),
+(2,2,'2025-2026','Failed'),
+(3,4,'2025-2026','Passed'),
+(3,5,'2025-2026','In Progress'),
+(4,5,'2025-2026','Passed'),
+(5,1,'2025-2026','In Progress'),
+(5,7,'2025-2026','In Progress'),
+(6,4,'2025-2026','Passed'),
+(7,6,'2025-2026','In Progress'),
+(8,5,'2025-2026','Passed'),
+(3,2,'2024-2025','Passed'),
+(4,3,'2024-2025','Failed');
+
+INSERT INTO grades (enrollment_id, evaluation_type, grade, coefficient, evaluation_date) VALUES
+(1,'Exam',15,2,'2026-01-10'),
+(2,'Exam',14,2,'2026-01-11'),
+(3,'Practical',13,1,'2026-01-12'),
+(4,'Exam',16,2,'2026-01-13'),
+(5,'Exam',8,2,'2026-01-14'),
+(6,'Exam',17,2,'2026-01-15'),
+(7,'Practical',14,1,'2026-01-16'),
+(8,'Exam',12,2,'2026-01-17'),
+(9,'Practical',15,1,'2026-01-18'),
+(10,'Exam',18,2,'2026-01-19'),
+(11,'Exam',11,2,'2026-01-20'),
+(12,'Practical',13,1,'2026-01-21');
+
+-- Query 1
+SELECT last_name, first_name, email, level FROM students;
+
+-- Query 2
+SELECT p.last_name, p.first_name, p.email, p.specialization
+FROM professors p
+JOIN departments d ON p.department_id = d.department_id
+WHERE d.department_name = 'Computer Science';
+-- Query 3
+SELECT course_code, course_name, credits
+FROM courses
+WHERE credits > 5;
+
+-- Query 4
+SELECT student_number, last_name, first_name
+FROM students
+WHERE level = 'L3';
+
+-- Query 5
+SELECT course_name, credits, semester
+FROM courses
+WHERE semester = 1;
+
+-- Query 6
+SELECT c.course_name,
+       CONCAT(p.last_name, ' ', p.first_name) AS professor_name
+FROM courses c
+LEFT JOIN professors p ON c.professor_id = p.professor_id;
+
+-- Query 7
+SELECT CONCAT(s.last_name, ' ', s.first_name) AS student_name,
+       c.course_name,
+       e.status
+FROM enrollments e
+JOIN students s ON e.student_id = s.student_id
+JOIN courses c ON e.course_id = c.course_id;
+
+-- Query 8
+SELECT CONCAT(s.last_name, ' ', s.first_name) AS student_name,
+       d.department_name
+FROM students s
+JOIN departments d ON s.department_id = d.department_id;
+
+-- Query 9
+SELECT s.last_name,
+       c.course_name,
+       g.grade
+FROM grades g
+JOIN enrollments e ON g.enrollment_id = e.enrollment_id
+JOIN students s ON e.student_id = s.student_id
+JOIN courses c ON e.course_id = c.course_id;
+
+-- Query 10
+SELECT p.last_name,
+       COUNT(c.course_id) AS number_of_courses
+FROM professors p
+LEFT JOIN courses c ON p.professor_id = c.professor_id
+GROUP BY p.professor_id;
+
+-- Query 11
+SELECT s.last_name,
+       AVG(g.grade) AS average
+FROM students s
+JOIN enrollments e ON s.student_id = e.student_id
+JOIN grades g ON e.enrollment_id = g.enrollment_id
+GROUP BY s.student_id;
+
+-- Query 12
+SELECT d.department_name,
+       COUNT(s.student_id) AS total_students
+FROM departments d
+LEFT JOIN students s ON d.department_id = s.department_id
+GROUP BY d.department_id;
+
+-- Query 13
+SELECT SUM(budget) AS total_budget
+FROM departments;
+
+-- Query 14
+SELECT d.department_name,
+       COUNT(c.course_id) AS number_of_courses
+FROM departments d
+LEFT JOIN courses c ON d.department_id = c.department_id
+GROUP BY d.department_id;
+
+-- Query 15
+SELECT d.department_name,
+       AVG(p.salary) AS average_salary
+FROM departments d
+JOIN professors p ON d.department_id = p.department_id
+GROUP BY d.department_id;
+
+-- Query 16
+SELECT s.last_name,
+       AVG(g.grade) AS average
+FROM students s
+JOIN enrollments e ON s.student_id = e.student_id
+JOIN grades g ON e.enrollment_id = g.enrollment_id
+GROUP BY s.student_id
+ORDER BY average DESC
+LIMIT 3;
+
+-- Query 17
+SELECT course_name
+FROM courses
+WHERE course_id NOT IN (
+    SELECT course_id FROM enrollments
+);
+
+-- Query 18
+SELECT s.last_name,
+       COUNT(*) AS passed_courses
+FROM enrollments e
+JOIN students s ON e.student_id = s.student_id
+WHERE e.status = 'Passed'
+GROUP BY s.student_id;
+
+-- Query 19
+SELECT p.last_name,
+       COUNT(c.course_id) AS total_courses
+FROM professors p
+JOIN courses c ON p.professor_id = c.professor_id
+GROUP BY p.professor_id
+HAVING total_courses > 2;
+
+-- Query 20
+SELECT s.last_name,
+       COUNT(e.course_id) AS total_courses
+FROM students s
+JOIN enrollments e ON s.student_id = e.student_id
+GROUP BY s.student_id
+HAVING total_courses > 2;
+
+-- Query 21
+SELECT s.last_name,
+       AVG(g.grade) AS student_average
+FROM students s
+JOIN enrollments e ON s.student_id = e.student_id
+JOIN grades g ON e.enrollment_id = g.enrollment_id
+GROUP BY s.student_id, s.department_id
+HAVING student_average > (
+    SELECT AVG(g2.grade)
+    FROM grades g2
+    JOIN enrollments e2 ON g2.enrollment_id = e2.enrollment_id
+    JOIN students s2 ON e2.student_id = s2.student_id
+    WHERE s2.department_id = s.department_id
+);
+
+-- Query 22
+SELECT c.course_name,
+       COUNT(e.enrollment_id) AS number_of_students
+FROM courses c
+JOIN enrollments e ON c.course_id = e.course_id
+GROUP BY c.course_id
+HAVING number_of_students > (
+    SELECT COUNT(*) / COUNT(DISTINCT course_id)
+    FROM enrollments
+);
+
+-- Query 23
+SELECT p.last_name,
+       d.department_name
+FROM professors p
+JOIN departments d ON p.department_id = d.department_id
+WHERE d.budget = (
+    SELECT MAX(budget) FROM departments
+);
+
+-- Query 24
+SELECT s.last_name,
+       s.email
+FROM students s
+WHERE s.student_id NOT IN (
+    SELECT e.student_id
+    FROM enrollments e
+    JOIN grades g ON e.enrollment_id = g.enrollment_id
+);
+
+-- Query 25
+SELECT d.department_name,
+       COUNT(s.student_id) AS number_of_students
+FROM departments d
+JOIN students s ON d.department_id = s.department_id
+GROUP BY d.department_id
+HAVING number_of_students > (
+    SELECT COUNT(*) / COUNT(DISTINCT department_id)
+    FROM students
+);
+
+-- Query 26
+SELECT c.course_name,
+       (SUM(CASE WHEN g.grade >= 10 THEN 1 ELSE 0 END) * 100.0 / COUNT(g.grade)) AS success_rate_percentage
+FROM courses c
+JOIN enrollments e ON c.course_id = e.course_id
+JOIN grades g ON e.enrollment_id = g.enrollment_id
+GROUP BY c.course_id;
+
+-- Query 27
+SELECT RANK() OVER (ORDER BY AVG(g.grade) DESC) AS rank_position,
+       CONCAT(s.last_name, ' ', s.first_name) AS student_name,
+       AVG(g.grade) AS average
+FROM students s
+JOIN enrollments e ON s.student_id = e.student_id
+JOIN grades g ON e.enrollment_id = g.enrollment_id
+GROUP BY s.student_id;
+
+-- Query 28
+SELECT c.course_name,
+       g.evaluation_type,
+       g.grade,
+       (g.grade * g.coefficient) AS weighted_grade
+FROM grades g
+JOIN enrollments e ON g.enrollment_id = e.enrollment_id
+JOIN courses c ON e.course_id = c.course_id
+WHERE e.student_id = 1;
+
+-- Query 29
+SELECT p.last_name,
+       SUM(c.credits) AS total_credits
+FROM professors p
+JOIN courses c ON p.professor_id = c.professor_id
+GROUP BY p.professor_id;
+
+-- Query 30
+SELECT c.course_name,
+       (COUNT(e.student_id) * 100.0 / c.max_capacity) AS fill_percentage
+FROM courses c
+LEFT JOIN enrollments e ON c.course_id = e.course_id
+GROUP BY c.course_id;