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NW6 | Fathi Kahin | Module-Database | E-commerce | Week 3 #165

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55 changes: 55 additions & 0 deletions E-Commerce/readme.md
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Expand Up @@ -53,6 +53,61 @@ Write SQL queries to complete the following tasks:
- [ ] List all the products in the order ORD006. The result should only contain the columns product_name, unit_price, and quantity
- [ ] List all the products with their supplier for all orders of all customers. The result should only contain the columns name (from customer), order_reference, order_date, product_name, supplier_name, and quantity

### Query Practice Answers

List all the products whose name contains the word "socks"
select * from products where product_name like '%socks%';

List all the products which cost more than 100 showing product id, name, unit price, and supplier id
SELECT pr.id AS product_id, pr.product_name, pa.unit_price, s.id AS supplier_id
FROM product_availability pa
JOIN products pr ON pa.prod_id = pr.id
JOIN suppliers s ON pa.supp_id = s.id
WHERE pa.unit_price > 100;

List the 5 most expensive products
SELECT pr.id as product_id, pr.product_name,pa.unit_price
FROM product_availability pa
JOIN products pr ON pa.prod_id = pr.id
ORDER BY pa.unit_price desc LIMIT 5;

List all the products sold by suppliers based in the United Kingdom. The result should only contain the columns product_name and supplier_name
SELECT pr.product_name, s.supplier_name
FROM suppliers s
JOIN product_availability pa ON pa.supp_id = s.id
JOIN products pr ON pr.id = pa.prod_id
WHERE s.country = 'United Kingdom';

List all orders, including order items, from customer named Hope Crosby
SELECT orders.* ,order_items.* from orders
JOIN customers on customers.id = orders.customer_id
JOIN order_items on order_items.order_id = orders.id
join product_availability pa on order_items.product_id = pa.prod_id
AND order_items.supplier_id = pa.supp_id
WHERE customers.name = 'Hope Crosby';

List all the products in the order ORD006. The result should only contain the columns product_name, unit_price, and quantity
SELECT pr.product_name,
pa.unit_price,
oi.quantity
FROM products pr
JOIN product_availability pa ON pr.id = pa.prod_id
JOIN order_items oi ON pr.id = oi.product_id
JOIN orders o ON o.id = oi.order_id
WHERE o.order_reference = 'ORD006';


List all the products with their supplier for all orders of all customers. The result should only contain the columns name (from customer), order_reference, order_date, product_name, supplier_name, and quantity
SELECT c.name, o.order_reference, o.order_date, pr.product_name, s.supplier_name, oi.quantity
from products pr
join product_availability pa on pr.id = pa.prod_id
join suppliers s on pa.supp_id = s.id
join order_items oi on oi.product_id = pa.prod_id
join orders o on o.id = oi.order_id
join customers c on c.id = o.customer_id;



## Acceptance Criteria

- [ ] The `cyf_ecommerce` database is imported and set up correctly
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