From cf6be502b728a7563980fd4aa74b1279fd53a4d0 Mon Sep 17 00:00:00 2001
From: Fathi Kahin <fhkahin@gmail.com>
Date: Wed, 22 May 2024 12:30:10 +0100
Subject: [PATCH] Read me updated All queries are written in SQL

---
 E-Commerce/readme.md | 55 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/E-Commerce/readme.md b/E-Commerce/readme.md
index 37580cce..ae9ca146 100644
--- a/E-Commerce/readme.md
+++ b/E-Commerce/readme.md
@@ -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