CREATE TABLE customers (
    customer_id integer PRIMARY KEY,
    first_name varchar(100),
    last_name varchar(100),
    email varchar(100)
);

CREATE TABLE products (
    product_id integer PRIMARY KEY,
    product_name varchar(100),
    price decimal
);

CREATE TABLE orders (
    order_id integer PRIMARY KEY,
    customer_id integer,
    order_date date
);

CREATE TABLE order_items (
    order_id integer,
    product_id integer,
    quantity integer
);

INSERT INTO customers (customer_id, first_name, last_name, email) VALUES
(1, 'John', 'Doe', 'johndoe@email.com'),
(2, 'Jane', 'Smith', 'janesmith@email.com'),
(3, 'Bob', 'Johnson', 'bobjohnson@email.com'),
(4, 'Alice', 'Brown', 'alicebrown@email.com'),
(5, 'Charlie', 'Davis', 'charliedavis@email.com'),
(6, 'Eva', 'Fisher', 'evafisher@email.com'),
(7, 'George', 'Harris', 'georgeharris@email.com'),
(8, 'Ivy', 'Jones', 'ivyjones@email.com'),
(9, 'Kevin', 'Miller', 'kevinmiller@email.com'),
(10, 'Lily', 'Nelson', 'lilynelson@email.com'),
(11, 'Oliver', 'Patterson', 'oliverpatterson@email.com'),
(12, 'Quinn', 'Roberts', 'quinnroberts@email.com'),
(13, 'Sophia', 'Thomas', 'sophiathomas@email.com');

INSERT INTO products (product_id, product_name, price) VALUES
(1, 'Product A', 10.00),
(2, 'Product B', 15.00),
(3, 'Product C', 20.00),
(4, 'Product D', 25.00),
(5, 'Product E', 30.00),
(6, 'Product F', 35.00),
(7, 'Product G', 40.00),
(8, 'Product H', 45.00),
(9, 'Product I', 50.00),
(10, 'Product J', 55.00),
(11, 'Product K', 60.00),
(12, 'Product L', 65.00),
(13, 'Product M', 70.00);

INSERT INTO orders (order_id, customer_id, order_date) VALUES
(1, 1, '2023-05-01'),
(2, 2, '2023-05-02'),
(3, 3, '2023-05-03'),
(4, 1, '2023-05-04'),
(5, 2, '2023-05-05'),
(6, 3, '2023-05-06'),
(7, 4, '2023-05-07'),
(8, 5, '2023-05-08'),
(9, 6, '2023-05-09'),
(10, 7, '2023-05-10'),
(11, 8, '2023-05-11'),
(12, 9, '2023-05-12'),
(13, 10, '2023-05-13'),
(14, 11, '2023-05-14'),
(15, 12, '2023-05-15'),
(16, 13, '2023-05-16');

INSERT INTO order_items (order_id, product_id, quantity) VALUES
(1, 1, 2),
(1, 2, 1),
(2, 2, 1),
(2, 3, 3),
(3, 1, 1),
(3, 3, 2),
(4, 2, 4),
(4, 3, 1),
(5, 1, 1),
(5, 3, 2),
(6, 2, 3),
(6, 1, 1),
(7, 4, 1),
(7, 5, 2),
(8, 6, 3),
(8, 7, 1),
(9, 8, 2),
(9, 9, 1),
(10, 10, 3),
(10, 11, 2),
(11, 12, 1),
(11, 13, 3),
(12, 4, 2),
(12, 5, 1),
(13, 6, 3),
(13, 7, 2),
(14, 8, 1),
(14, 9, 2),
(15, 10, 3),
(15, 11, 1),
(16, 12, 2),
(16, 13, 3);