my-guitar-shop-database-exersices/How-to-retrieve-data-from-two-or-more-tables.sql

-- Exercise 1
SELECT category_name, product_name, list_price
FROM categories c JOIN products p
ON c.category_id = p.category_id
ORDER BY category_name, product_name

-- Exercise 2
SELECT first_name, last_name, line1, city, state, zip_code
FROM customers c JOIN addresses a
ON c.customer_id = a.customer_id
WHERE email_address LIKE 'allan.sherwood@yahoo.com'

-- Exercise 3
SELECT first_name, last_name, line1, city, state, zip_code
FROM customers c JOIN addresses a
ON c.customer_id = a.customer_id
AND c.shipping_address_id = address_id

-- Exercise 4
SELECT last_name, first_name, order_date, product_name, item_price, discount_amount, quantity
FROM customers c JOIN orders o
ON c.customer_id = o.customer_id
JOIN order_items i
ON i.order_id = o.order_id
JOIN products p 
ON p.product_id = i.product_id
ORDER BY last_name, order_date, product_name

-- Exercise 5
SELECT p.product_name, p.list_price
FROM products p JOIN products p2
ON p.list_price = p2.list_price AND p.product_id != p2.product_id
ORDER BY product_name

-- Exercise 6
SELECT c.category_name, p.product_id
FROM categories c LEFT JOIN products p
ON c.category_id = p.category_id
WHERE p.product_id IS NULL

-- Exercise 7