Databases week3/soheib

databases/week3/data_enty.sql

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+-- Insert data into meal table
+INSERT INTO meal (title, description, location, `when`, max_reservations, price, created_date) VALUES
+('Italian Pasta Night', 'Delicious homemade pasta with authentic Italian flavors.', 'Copenhagen', '2025-03-15', 10, 12.99, '2025-02-25'),
+('Sushi Extravaganza', 'A night of fresh sushi and sashimi.', 'Aarhus', '2025-03-18', 8, 25.50, '2025-02-26'),
+('Vegan Delight', 'A full-course vegan meal with organic ingredients.', 'Odense', '2025-03-20', 12, 18.75, '2025-02-27'),
+('BBQ Feast', 'Slow-cooked BBQ meats with homemade sauces.', 'Aalborg', '2025-03-22', 15, 22.00, '2025-02-28'),
+('Mexican Fiesta', 'Spicy and flavorful Mexican dishes.', 'Esbjerg', '2025-03-25', 10, 14.99, '2025-02-28'),
+('Seafood Lovers', 'Fresh seafood straight from the coast.', 'Copenhagen', '2025-03-28', 6, 30.00, '2025-03-01'),
+('French Cuisine Night', 'Classic French dishes paired with wine.', 'Aarhus', '2025-04-01', 10, 35.50, '2025-03-02'),
+('Indian Curry Fest', 'A variety of authentic Indian curries.', 'Odense', '2025-04-03', 12, 16.50, '2025-03-03'),
+('Burger Bonanza', 'Gourmet burgers with hand-cut fries.', 'Aalborg', '2025-04-06', 15, 13.99, '2025-03-04'),
+('Taco Tuesday', 'All-you-can-eat tacos with fresh toppings.', 'Esbjerg', '2025-04-09', 20, 10.99, '2025-03-05'),
+('Mediterranean Delights', 'A healthy and flavorful Mediterranean meal.', 'Copenhagen', '2025-04-12', 8, 19.99, '2025-03-06'),
+('Korean BBQ Night', 'Grilled meats and classic Korean sides.', 'Aarhus', '2025-04-15', 10, 28.00, '2025-03-07'),
+('Pizza Party', 'Wood-fired pizzas with fresh toppings.', 'Odense', '2025-04-18', 12, 15.50, '2025-03-08'),
+('Steakhouse Special', 'Premium cuts of beef grilled to perfection.', 'Aalborg', '2025-04-21', 8, 40.00, '2025-03-09'),
+('Greek Night', 'Greek dishes with fresh tzatziki and feta cheese.', 'Esbjerg', '2025-04-24', 10, 17.50, '2025-03-10'),
+('Dim Sum Brunch', 'Traditional Chinese dumplings and buns.', 'Copenhagen', '2025-04-27', 10, 21.00, '2025-03-11'),
+('Middle Eastern Feast', 'A mix of kebabs, hummus, and more.', 'Aarhus', '2025-04-30', 12, 23.50, '2025-03-12'),
+('American Diner Experience', 'Classic American comfort food.', 'Odense', '2025-05-03', 15, 14.00, '2025-03-13'),
+('Fusion Food Night', 'A mix of global flavors in one meal.', 'Aalborg', '2025-05-06', 10, 26.75, '2025-03-14'),
+('Healthy Bowls', 'Nutrient-packed grain bowls with fresh ingredients.', 'Esbjerg', '2025-05-09', 12, 13.50, '2025-03-15');
+
+-- Insert data into reservation table
+INSERT INTO reservation (number_of_guests, meal_id, created_date, contact_phone_number, contact_name, contact_email) VALUES
+(2, 1, '2025-03-01', '12345678', 'Alice Johnson', '[email protected]'),
+(3, 2, '2025-03-02', '23456789', 'Bob Smith', '[email protected]'),
+(1, 3, '2025-03-03', '34567890', 'Charlie Brown', '[email protected]'),
+(4, 4, '2025-03-04', '45678901', 'David Lee', '[email protected]'),
+(2, 5, '2025-03-05', '56789012', 'Eve Adams', '[email protected]'),
+(5, 6, '2025-03-06', '67890123', 'Frank Miller', '[email protected]'),
+(3, 7, '2025-03-07', '78901234', 'Grace Kelly', '[email protected]'),
+(1, 8, '2025-03-08', '89012345', 'Hank Green', '[email protected]'),
+(2, 9, '2025-03-09', '90123456', 'Ivy Wilson', '[email protected]'),
+(4, 10, '2025-03-10', '12340987', 'Jack White', '[email protected]');
+
+-- Insert data into review table
+INSERT INTO review (title, description, meal_id, stars, created_date) VALUES
+('Amazing Pasta', 'The best Italian pasta I’ve had in years!', 1, 5, '2025-03-16'),
+('Sushi Heaven', 'Super fresh sushi, highly recommend!', 2, 5, '2025-03-19'),
+('Great Vegan Options', 'Loved the variety of vegan dishes.', 3, 4, '2025-03-21'),
+('Best BBQ Ever', 'The ribs were falling off the bone.', 4, 5, '2025-03-23'),
+('Spicy and Delicious', 'Authentic Mexican flavors!', 5, 4, '2025-03-26'),
+('So Fresh!', 'Amazing seafood, great atmosphere.', 6, 5, '2025-03-29'),
+('French Elegance', 'A true taste of France.', 7, 5, '2025-04-02'),
+('Perfectly Spiced', 'Best curry in town.', 8, 4, '2025-04-04'),
+('Burger Bliss', 'Juicy and flavorful burgers.', 9, 5, '2025-04-07'),
+('Taco Overload', 'So many tacos, all were delicious.', 10, 4, '2025-04-10');

databases/week3/mealsharing_create.sql

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+CREATE DATABASE mealsharing_db
+    DEFAULT CHARACTER SET = 'utf8mb4';
+
+USE mealsharing_db;
+
+CREATE TABLE meal (
+    id INT PRIMARY KEY AUTO_INCREMENT,
+    title VARCHAR(255),
+    description TEXT,
+    location VARCHAR(255),
+    `when` DATE,
+    max_reservations INT,
+    price DECIMAL(5, 2),
+    created_date DATE
+);
+
+
+CREATE TABLE reservation (
+    id INT PRIMARY KEY AUTO_INCREMENT,
+    number_of_guests INT,
+    meal_id INT,
+    created_date DATE,
+    contact_phone_number VARCHAR(255),
+    contact_name VARCHAR(255),
+    contact_email VARCHAR(255),
+    FOREIGN KEY (meal_id) REFERENCES meal(id) ON DELETE CASCADE
+);
+
+CREATE TABLE review (
+    id INT PRIMARY KEY AUTO_INCREMENT,
+    title VARCHAR(255),
+    description TEXT,
+    meal_id INT,
+    stars INT,
+    created_date DATE,
+    FOREIGN KEY (meal_id) REFERENCES meal(id) ON DELETE CASCADE
+);

databases/week3/queries.sql

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+--Get all meals
+--Get all meals
+SELECT * FROM meal;
+
+--Add a new meal
+INSERT INTO meal (title, description, location, `when`, max_reservations, price, created_date) VALUES ('Burak', 'Deep fried crunchy rolls, soft and creamy inside', 'Aalborg', '2025-03-18', 4, 25.50, '2025-02-26');   
+
+SELECT * FROM meal WHERE id = 10;
+
+-- update a meal
+UPDATE meal SET title = 'Brik' WHERE id = 21;
+
+-- delete a meal
+DELETE FROM meal WHERE id = 1;
+
+-- Get all reservations
+SELECT * FROM reservation;
+
+-- Add a new reservation
+INSERT INTO reservation (number_of_guests, meal_id, created_date, contact_phone_number, contact_name, contact_email) VALUES (7, 10, '2025-03-01', '12345678', 'Juan Cruz', '[email protected]');
+
+-- get a reservation with an id 
+SELECT * FROM reservation WHERE id = 5;
+
+-- update a reservation
+UPDATE reservation SET number_of_guests = 8 WHERE id = 5;
+
+-- delete a reservation
+DELETE FROM reservation WHERE id = 5;
+
+-- Get all reviews
+SELECT * FROM review;
+
+-- Add a new review
+INSERT INTO review (title, description, meal_id, stars, created_date) VALUES ('Best Burak', 'The best Burak I’ve had in years!', 10, 5, '2025-03-16');  
+
+-- get a review with an id
+SELECT * FROM review WHERE id = 5;  
+
+-- update a review
+UPDATE review SET title = 'Best Brik' WHERE id = 5;
+
+-- delete a review
+DELETE FROM review WHERE id = 5;
+
+-- getting all meals cheaper than 15
+SELECT * FROM meal WHERE price < 15;
+
+-- all meals with available reservations
+SELECT meal.*
+FROM meal
+LEFT JOIN reservation ON meal.id = reservation.meal_id
+WHERE meal.max_reservations > (
+    SELECT COUNT(*) FROM reservation WHERE reservation.meal_id = meal.id
+);
+-- Get meals that partially match a title
+SELECT * FROM meal WHERE title LIKE '%BBQ%';
+
+--Get meals that has been created between two dates
+SELECT * FROM meal WHERE created_date BETWEEN '2025-03-01' AND '2025-03-5';
+
+--Get only specific number of meals fx return only 5 meals
+SELECT * FROM meal LIMIT 5;
+
+--Get the meals that have good reviews
+SELECT * FROM meal 
+JOIN review ON meal.id = review.meal_id
+WHERE review.stars > 4;
+
+--Get reservations for a specific meal sorted by created_date
+SELECT * FROM reservation WHERE meal_id = 10 ORDER BY created_date;
+
+--Sort all meals by average number of stars in the reviews
+SELECT m.id, m.title, AVG(review.stars) AS avg_stars
+FROM meal AS m
+LEFT JOIN review ON m.id = review.meal_id
+GROUP BY m.id
+ORDER BY avg_stars DESC;