added sql

.vscode/settings.json

@@ -1,3 +1,3 @@
 {
-    "workbench.colorTheme": "Atom One Dark"
+    "workbench.colorTheme": "Copilot Theme"
 }

assignment.sql

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+CREATE database assignment;
+USE assignment;
+
+CREATE TABLE USER (
+    user_id INT AUTO_INCREMENT PRIMARY KEY,
+    email VARCHAR(255) NOT NULL,
+    given_name VARCHAR(255) NOT NULL,
+    surname VARCHAR(255) NOT NULL,
+    city VARCHAR(255),
+    phone_number VARCHAR(20),
+    profile_description TEXT,
+    password VARCHAR(255) NOT NULL
+);
+
+
+INSERT INTO USER (user_id, email, given_name, surname, city, phone_number, profile_description, password)
+VALUES
+    (1, 'caregiver1@gmail.com', 'Aygul', 'Murat', 'Astana', '+7 777-111-2233', 'Babysitter', 'password1'),
+    (2, 'caregiver2@gmail.com', 'Adilet', 'Adiletov', 'Astana', '+7 701-222-3344', 'Caregiver for elderly', 'password2'),
+    (3, 'caregiver3@gmail.com', 'Gulnaz', 'Murat', 'Astana', '+7 777-333-4455', 'Playmate for children', 'password3'),
+    (4, 'caregiver4@gmail.com', 'Aizhan', 'Murat', 'Astana', '+7 701-444-5566', 'Babysitter', 'password4'),
+    (5, 'caregiver5@gmail.com', 'Erbol', 'Erbolov', 'Astana', '+7 702-555-6677', 'Caregiver for elderly', 'password5'),
+    (6, 'caregiver6@gmail.com', 'Saule', 'Murat', 'Astana', '+7 701-666-7788', 'Caregiver for elderly', 'password6'),
+    (7, 'caregiver7@gmail.com', 'Madina', 'Murat', 'Astana', '+7 702-777-8899', 'Caregiver for elderly', 'password7'),
+    (8, 'caregiver8@gmail.com', 'Elzhan', 'Murat', 'Astana', '+7 701-888-9900', 'Babysitter', 'password8'),
+    (9, 'caregiver9@gmail.com', 'Ayna', 'Rakhat', 'Astana', '+7 702-999-0011', 'Babysitter', 'password9'),
+    (10, 'caregiver10@gmail.com', 'Bakyt', 'Bakytov', 'Astana', '+7 701-001-1122', 'Caregiver for elderly', 'password10'),
+
+    (11, 'family11@email.com', 'Bolat', 'Bolatov', 'Astana', '+7 777-111-2233', 'Looking for a babysitter for my child', 'password11'),
+    (12, 'family12@email.com', 'Askar', 'Askarov', 'Astana', '+7 701-222-3344', 'Looking for elderly caregiver', 'password12'),
+    (13, 'family13@email.com', 'Doszhan', 'Doszhanov', 'Astana', '+7 777-333-4455', 'Looking for a playmate for my children', 'password13'),
+    (14, 'family14@email.com', 'Kasym', 'Kasymova', 'Astana', '+7 701-444-5566', 'Looking for a babysitter for my son', 'password14'),
+    (15, 'family15@email.com', 'Bekzhan', 'Bekzhanov', 'Astana', '+7 702-555-6677', 'Looking for an elderly caregiver', 'password15'),
+    (16, 'family16@email.com', 'Suleimen', 'Suleimenova', 'Astana', '+7 701-666-7788', 'Looking for an elderly caregiver', 'password16'),
+    (17, 'family17@email.com', 'Ismail', 'Ismailova', 'Astana', '+7 702-777-8899', 'Looking for an elderly caregiver', 'password17'),
+    (18, 'family18@email.com', 'Kenzhebek', 'Kenzhebekov', 'Astana', '+7 701-888-9900', 'Looking for a babysitter for my child', 'password18'),
+    (19, 'family19@email.com', 'Ait', 'Aitkhozhina', 'Astana', '+7 702-999-0011', 'Looking for a babysitter for my child', 'password19'),
+    (20, 'family20@email.com', 'Serik', 'Serikov', 'Astana', '+7 701-001-1122', 'Looking for an elderly caregiver', 'password20');
+
+CREATE TABLE CAREGIVER (
+    caregiver_user_id INT PRIMARY KEY,
+    photo BLOB,
+    gender VARCHAR(20),
+    caregiving_type VARCHAR(255),
+    hourly_rate INT,
+    FOREIGN KEY (caregiver_user_id) REFERENCES USER(user_id) on delete cascade
+);
+
+INSERT INTO CAREGIVER (caregiver_user_id, photo, gender, caregiving_type, hourly_rate)
+VALUES
+    (1, NULL, 'Female', 'Babysitter', 20),
+    (2, NULL, 'Male', 'Caregiver for elderly', 22),
+    (3, NULL, 'Female', 'Playmate for children', 15),
+    (4, NULL, 'Female', 'Babysitter', 20),
+    (5, NULL, 'Male', 'Caregiver for elderly', 18),
+    (6, NULL, 'Female', 'Caregivr for elderly', 15),
+    (7, NULL, 'Female', 'Caregiver for elderly', 20),
+    (8, NULL, 'Female', 'Babysitter', 15),
+    (9, NULL, 'Female', 'Babysitter', 25),
+    (10, NULL, 'Male', 'Caregiver for elderly', 20);
+
+
+CREATE TABLE MEMBER (
+    member_user_id INT PRIMARY KEY,
+    house_rules TEXT,
+    FOREIGN KEY (member_user_id) REFERENCES USER(user_id) on delete cascade
+);
+
+INSERT INTO MEMBER (member_user_id, house_rules)
+VALUES
+    (11, 'Hygiene and cleanliness are a must.'),
+    (12, 'No pets.'),
+    (13, 'Provide a safe play area for children.'),
+    (14, 'Hygiene and cleanliness are a must.'),
+    (15, 'Hygiene and cleanliness are a must.'),
+    (16, 'No pets.'),
+    (17, 'Need.'),
+    (18, 'Hygiene and cleanliness are a must.'),
+    (19, 'No pets.'),
+    (20, 'Hygiene and cleanliness are a must.');
+
+CREATE TABLE ADDRESS (
+    member_user_id INT PRIMARY KEY,
+    house_number INT,
+    street VARCHAR(255),
+    town VARCHAR(255),
+    FOREIGN KEY (member_user_id) REFERENCES MEMBER(member_user_id) ON delete cascade
+);
+
+INSERT INTO ADDRESS (member_user_id, house_number, street, town)
+VALUES
+    (11, 5, 'Turan', 'Astana'),
+    (12, 4, 'Sauran', 'Astana'),
+    (13, 78, 'Syganak', 'Astana'),
+    (14, 10, 'Dostyk', 'Astana'),
+    (15, 20, 'Turan', 'Astana'),
+    (16, 3, 'Sarayshyk', 'Astana'),
+    (17, 12, 'Turan', 'Astana'),
+    (18, 5, 'Dostyk', 'Astana'),
+    (19, 6, 'Respublika', 'Astana'),
+    (20, 7, 'Dostyk', 'Astana');
+
+CREATE TABLE JOB (
+    job_id INT AUTO_INCREMENT PRIMARY KEY,
+    member_user_id INT,
+    required_caregiving_type VARCHAR(255),
+    other_requirements TEXT,
+    date_posted DATE,
+    FOREIGN KEY (member_user_id) REFERENCES MEMBER(member_user_id) on delete cascade
+);
+
+INSERT INTO JOB (job_id, member_user_id, required_caregiving_type, other_requirements, date_posted)
+VALUES
+    (1, 11, 'Babysitter', 'Must be gentle with children.', '2023-10-30'),
+    (2, 12, 'Caregiver for elderly', 'No pets.', '2023-11-01'),
+    (3, 13, 'Playmate for children', 'Provide a safe play area for children.', '2023-11-05'),
+    (4, 14, 'Babysitter', 'Nust be gentle with children.', '2023-10-20'),
+    (5, 15, 'Caregiver for elderly', 'Hygiene and cleanliness are a must.', '2023-11-04'),
+    (6, 16, 'Caregiver for elderly', 'No pets.', '2023-11-02'),
+    (7, 17, 'Caregiver for elderly', 'No pets.', '2023-10-31'),
+    (8, 18, 'Babysitter', 'Hygiene and cleanliness are a must.', '2023-11-04'),
+    (9, 19, 'Babysitter', 'No pets.', '2023-11-05'),
+    (10, 20, 'Caregiver for elderly', 'Hygiene and cleanliness are a must.', '2023-10-25');
+
+CREATE TABLE JOB_APPLICATION (
+    caregiver_user_id INT,
+    job_id INT,
+    date_applied DATE,
+    PRIMARY KEY (caregiver_user_id, job_id),
+    FOREIGN KEY (caregiver_user_id) REFERENCES CAREGIVER(caregiver_user_id) on delete cascade,
+    FOREIGN KEY (job_id) REFERENCES JOB(job_id) ON DELETE CASCADE
+);
+
+INSERT INTO JOB_APPLICATION (caregiver_user_id, job_id, date_applied)
+VALUES
+    (1, 1, '2023-11-01'),
+    (2, 2, '2023-11-02'),
+    (3, 3, '2023-11-06'),
+    (4, 4, '2023-11-04'),
+    (5, 5, '2023-11-05'),
+    (6, 10, '2023-11-06'),
+    (7, 6, '2023-11-07'),
+    (8, 9, '2023-11-08'),
+    (9, 8, '2023-11-09'),
+    (10, 7, '2023-11-10');
+
+
+CREATE TABLE APPOINTMENT (
+    appointment_id INT AUTO_INCREMENT PRIMARY KEY,
+    caregiver_user_id INT,
+    member_user_id INT,
+    appointment_date DATE,
+    appointment_time TIME,
+    work_hours VARCHAR(50),
+    status VARCHAR(50),
+    FOREIGN KEY (caregiver_user_id) REFERENCES CAREGIVER(caregiver_user_id) on delete cascade,
+    FOREIGN KEY (member_user_id) REFERENCES MEMBER(member_user_id) on delete cascade
+);
+
+INSERT INTO APPOINTMENT (caregiver_user_id, member_user_id, appointment_date, appointment_time, work_hours, status)
+VALUES
+    (1, 11, '2023-11-15', '10:00:00', '4 hours', 'Confirmed'),
+    (2, 12, '2023-11-17', '14:00:00', '3 hours', 'Confirmed'),
+    (3, 13, '2023-11-18', '15:30:00', '5 hours', 'Confirmed'),
+    (4, 14, '2023-11-21', '09:00:00', '6 hours', 'Confirmed'),
+    (5, 15, '2023-11-23', '13:45:00', '7 hours', 'Declined'),
+    (6, 20, '2023-11-24', '11:00:00', '4 hours', 'Confirmed'),
+    (7, 16, '2023-11-26', '14:30:00', '5 hours', 'Confirmed'),
+    (8, 19, '2023-11-27', '09:30:00', '4 hours', 'Declined'),
+    (9, 18, '2023-11-29', '15:15:00', '8 hours', 'Confirmed'),
+    (10, 17, '2023-11-30', '12:00:00', '3 hours', 'Confirmed');
+
+#3.1
+UPDATE USER
+SET phone_number = '+77771010001'
+WHERE given_name = 'Askar' AND surname = 'Askarov';
+
+#3.2
+UPDATE CAREGIVER 
+SET hourly_rate = 
+    CASE
+        WHEN hourly_rate < 9 THEN hourly_rate + 0.5
+        ELSE hourly_rate * 1.1
+    END;
+
+#4.1
+DELETE FROM JOB
+WHERE member_user_id = (SELECT user_id FROM USER WHERE given_name = 'Bolat' AND surname = 'Bolatov');
+ 
+#4.2
+DELETE FROM MEMBER
+WHERE member_user_id IN (SELECT member_user_id FROM ADDRESS WHERE street = 'Turan');
+
+#5.1
+SELECT a.appointment_id, a.caregiver_user_id AS caregiver_id, c.given_name AS caregiver_name, a.member_user_id AS member_id, m.given_name AS member_name
+FROM appointment AS a, user AS c, user AS m
+WHERE a.caregiver_user_id = c.user_id
+AND a.member_user_id = m.user_id
+AND a.status = 'Confirmed';
+
+#5.2
+SELECT job_id FROM JOB WHERE other_requirements LIKE '%gentle%';
+
+#5.3
+SELECT
+    A.appointment_id,
+    U.given_name AS caregiver_given_name,
+    U.surname AS caregiver_surname,
+    J.required_caregiving_type,
+    A.work_hours
+FROM
+    APPOINTMENT A
+JOIN
+    CAREGIVER C ON A.caregiver_user_id = C.caregiver_user_id
+JOIN
+    USER U ON C.caregiver_user_id = U.user_id
+JOIN
+    JOB J ON A.member_user_id = J.member_user_id
+WHERE
+    J.required_caregiving_type = 'Babysitter';
+
+#5.4
+SELECT u.user_id, u.given_name, u.surname
+FROM user AS u
+WHERE u.user_id IN (
+    SELECT m.member_user_id
+    FROM member AS m
+    WHERE m.member_user_id IN (
+        SELECT a.member_user_id
+        FROM address AS a
+        WHERE a.town = 'Astana'
+    ) 
+    AND m.member_user_id IN (
+        SELECT j.member_user_id
+        FROM job AS j
+        WHERE j.required_caregiving_type = 'Caregiver for elderly'
+        AND j.other_requirements = 'No pets.'
+    )
+);
+
+#6.1
+SELECT J.job_id, COUNT(JA.caregiver_user_id) AS num_applicants
+        FROM JOB AS J
+        LEFT JOIN JOB_APPLICATION AS JA ON J.job_id = JA.job_id
+        GROUP BY J.job_id;
+
+#6.2
+SELECT a.caregiver_user_id AS caregiver_id, c.given_name AS caregiver_name, 
+       SUM(a.work_hours) AS total_hours
+FROM appointment AS a
+JOIN user AS c ON a.caregiver_user_id = c.user_id
+WHERE a.status = 'Confirmed'
+GROUP BY caregiver_id, caregiver_name;
+
+#6.3
+SELECT U.given_name, U.surname, AVG(C.hourly_rate) AS avg_hourly_rate
+FROM APPOINTMENT AS A
+JOIN USER AS U ON A.caregiver_user_id = U.user_id
+JOIN CAREGIVER AS C ON U.user_id = C.caregiver_user_id
+WHERE A.status = 'Confirmed'
+GROUP BY U.given_name, U.surname;
+
+#6.4
+SELECT U.user_id, U.given_name, U.surname, C.hourly_rate
+FROM USER AS U
+JOIN CAREGIVER AS C ON U.user_id = C.caregiver_user_id
+WHERE C.hourly_rate > (
+    SELECT AVG(C2.hourly_rate)
+    FROM CAREGIVER AS C2
+    JOIN APPOINTMENT AS A ON C2.caregiver_user_id = A.caregiver_user_id
+    WHERE A.status = 'Confirmed'
+);
+
+#7
+SELECT A.caregiver_user_id, U.given_name, U.surname, SUM(TIME_TO_SEC(A.work_hours) * C.hourly_rate) AS total_cost
+FROM APPOINTMENT AS A
+JOIN USER AS U ON A.caregiver_user_id = U.user_id
+JOIN CAREGIVER AS C ON A.caregiver_user_id = C.caregiver_user_id
+WHERE A.status = 'Confirmed'
+GROUP BY A.caregiver_user_id, U.given_name, U.surname;
+
+#8
+CREATE VIEW JobApplicationsView AS
+SELECT JA.job_id, J.member_user_id AS family_id, U1.given_name AS family_given_name, U1.surname AS family_surname,
+       J.required_caregiving_type, J.other_requirements, U2.given_name AS caregiver_given_name, U2.surname AS caregiver_surname
+FROM JOB_APPLICATION AS JA
+JOIN JOB AS J ON JA.job_id = J.job_id
+JOIN USER AS U1 ON J.member_user_id = U1.user_id
+JOIN USER AS U2 ON JA.caregiver_user_id = U2.user_id;
+SELECT * FROM JobApplicationsView;
+
+
+
+