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53 changes: 47 additions & 6 deletions E-Commerce/readme.md
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Expand Up @@ -45,13 +45,54 @@ erDiagram

Write SQL queries to complete the following tasks:

- [ ] List all the products whose name contains the word "socks"
- [ ] List all the products which cost more than 100 showing product id, name, unit price, and supplier id
- [ ] List the 5 most expensive products
- [ ] List all the products sold by suppliers based in the United Kingdom. The result should only contain the columns product_name and supplier_name
- [ ] List all the products whose name contains the word "socks":
select product_name from products where product_name like '%socks%';

@sherif98 sherif98 Sep 16, 2023

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Please use uppercase letter for the SQL commands similar to the other queries.

- [ ] List all the products which cost more than 100 showing product id, name, unit price, and supplier id :
SELECT pa.prod_id, p.product_name, pa.unit_price, pa.supp_id
FROM product_availability pa
JOIN products p ON pa.prod_id = p.id
WHERE pa.unit_price > 100;
- [ ] List the 5 most expensive products:
SELECT p.id, p.product_name, pa.unit_price
FROM products p
JOIN product_availability pa ON p.id = pa.prod_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 p.product_name, s.supplier_name
FROM products p
JOIN product_availability pa ON p.id = pa.prod_id
JOIN suppliers s ON pa.supp_id = s.id
WHERE s.country = 'United Kingdom';

- [ ] List all orders, including order items, from customer named Hope Crosby
- [ ] 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

We need to join 3 tables ,costumers where we get the id and check the name , match it with orders with the same id in the costumers_id, and then join with order_items with the order_id same as id on orders.

SELECT o.id AS order_id, o.order_date, o.order_reference, oi.product_id, oi.supplier_id, ot.quantity
FROM customers c
JOIN orders o ON c.id = o.customer_id
JOIN order_items oi ON o.id = oi.order_id
WHERE c.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 p.product_name, pa.unit_price, oi.quantity
FROM orders o
JOIN order_items oi ON o.id = oi.order_id
JOIN products p ON oi.product_id = p.id
JOIN product_availability pa ON pa.prod_id = oi.product_id and pa.supp_id=oi.supplier_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,p.product_name,s.supplier_name,oi.quantity
from orders o join customers c On o.customer_id=c.id
join order_items oi on oi.order_id=o.id
join product_availability pa on oi.product_id=pa.prod_id and oi.supplier_id=pa.supp_id
join products p on oi.product_id = p.id
join suppliers s on pa.supp_id=s.id;

## Acceptance Criteria

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