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Exercise_1.1.sql

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+SELECT product_code, product_name, list_price, discount_percent FROM products;
+SELECT product_code, product_name, list_price, discount_percent FROM products ORDER BY list_price DESC;

Exercise_1.2.sql

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+SELECT CONCAT(last_name, ', ', first_name) AS full_name FROM customers
+WHERE last_name REGEXP '^[M-Z]' ORDER BY last_name ASC;

Exercise_1.3.sql

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+SELECT product_name, list_price, date_added FROM products WHERE list_price > 500 and list_price < 2000 ORDER BY date_added DESC;

Exercise_1.4.sql

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+SELECT product_name, list_price, discount_percent, ROUND((list_price * discount_percent / 100),2) AS discount_amount , 
+ROUND((list_price - (list_price * discount_percent/100)),2) AS discount_price 
+FROM products ORDER BY (list_price - (list_price*discount_percent/100)) DESC LIMIT 5;

Exercise_1.5.sql

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+SELECT item_id, item_price, discount_amount, quantity, (item_price*quantity) AS price_total, (discount_amount*quantity) AS discount_total, ((item_price - discount_amount)-quantity) AS item_total
+FROM order_items WHERE ((item_price - discount_amount)-quantity)  > 500 
+ORDER BY item_total DESC;