Lola/week3

week-2/mandatory/2-ecommerce-db/commerce-data

@@ -0,0 +1,85 @@
+ --SELECT products.product_name, p.unit_price, s.supplier_name
+ ---FROM product p
+ --INNER JOIN suppliers
+ ----ON p.id= s.products_id;
+
+que 1. SELECT *FROM customers WHERE country = 'United States';
+Que2. SELECT * FROM customers ORDER BY name; or SELECT * FROM customers ORDER BY name asc;
+ Que3. SELECT * FROM products WHERE unit_price > 100;
+
+ que4. SELECT * FROM products WHERE product_name LIKE '%socks%';
+
+ Que5. SELECT * from products ORDER BY unit_price DESC LIMIT 5;
+ Que6. SELECT product_name, unit_price, supplier_name  FROM products, suppliers WHERE products.supplier_id = suppliers.id;
+
+
+
+ Que7. SELECT product_name, supplier_name  FROM products, suppliers WHERE products.supplier_id = suppliers.id AND suppliers.country = 'United Kingdom';
+
+ Q8. SELECT * FROM orders, customers WHERE orders.customer_id = customers.id AND customers.id = 1;
+ cyf_ecommerce=> SELECT * FROM  orders;
+ id | order_date | order_reference | customer_id
+----+------------+-----------------+-------------
+  1 | 2019-06-01 | ORD001          |           1
+  2 | 2019-07-15 | ORD002          |           1
+  3 | 2019-07-11 | ORD003          |           1
+  4 | 2019-05-24 | ORD004          |           2
+  5 | 2019-05-30 | ORD005          |           3
+  6 | 2019-07-05 | ORD006          |           4
+  7 | 2019-04-05 | ORD007          |           4
+  8 | 2019-07-23 | ORD008          |           5
+  9 | 2019-07-24 | ORD009          |           5
+ 10 | 2019-05-10 | ORD010          |           5
+(10 rows)
+
+ q9. SELECT * FROM orders, customers WHERE orders.customer_id = customers.id AND customers.name = 'Hope Crosby';
+
+cyf_ecommerce=> SELECT * FROM products;
+ id |      product_name       | unit_price | supplier_id 
+----+-------------------------+------------+-------------
+  1 | Tee Shirt Olympic Games |         20 |           1
+  2 | Tee Shirt Olympic Games |         18 |           2
+  3 | Tee Shirt Olympic Games |         21 |           3
+  4 | Mobile Phone X          |        299 |           1
+  5 | Mobile Phone X          |        249 |           4
+  6 | Super warm socks        |         10 |           1
+  7 | Super warm socks        |          5 |           2
+  8 | Super warm socks        |          8 |           3
+  9 | Super warm socks        |         10 |           4
+ 10 | Le Petit Prince         |         10 |           1
+ 11 | Le Petit Prince         |         10 |           4
+ 12 | Ball                    |         14 |           1
+ 13 | Ball                    |         15 |           4
+ 14 | Ball                    |         20 |           2
+ 15 | Javascript Book         |         40 |           1
+ 16 | Javascript Book         |         39 |           3
+ 17 | Javascript Book         |         41 |           2
+ 18 | Coffee Cup              |          3 |           1
+ 19 | Coffee Cup              |          4 |           2
+ 20 | Coffee Cup              |          4 |           3
+ 21 | Coffee Cup              |          5 |           4
+(21 rows)
+
+Retrieve all the products in the order `ORD006`. The result should only contain the columns `product_name`, `unit_price` and `quantity`.
+10. SELECT * FROM products,orders,order_items WHERE order_items.order_id=orders.id AND order_items.product_id=products.id AND orders.order_reference='ORD006';
+
+ id |   product_name   | unit_price | supplier_id | id | order_date | order_reference | customer_id | id | order_id | product_id | quantity
+----+------------------+------------+-------------+----+------------+-----------------+-------------+----+----------+------------+----------
+ 19 | Coffee Cup       |          4 |           2 |  6 | 2019-07-05 | ORD006          |           4 | 10 |        6 |         19 |        3
+ 17 | Javascript Book  |         41 |           2 |  6 | 2019-07-05 | ORD006          |           4 | 11 |        6 |         17 |        1
+ 11 | Le Petit Prince  |         10 |           4 |  6 | 2019-07-05 | ORD006          |           4 | 12 |        6 |         11 |        1
+  9 | Super warm socks |         10 |           4 |  6 | 2019-07-05 | ORD006          |           4 | 13 |        6 |          9 |        3
+(4 rows)
+
+
+Q11. Retrieve 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`.
+11.  SELECT customers.name, order_reference, order_date, product_name, supplier_name, quantity FROM customers, suppliers, orders, products, order_items WHERE order_items.order_id=orders.id AND order_items.product_id=products.id AND customers.id=orders.customer_id AND suppliers.id=products.id;
+
+
+
+12. SELECT customers.name FROM customers,suppliers,orders,products,order_items WHERE order_items.order_id=orders.id AND order_items.product_id=products.id AND customers.id=orders.customer_id AND suppliers.id=products.id AND  suppliers.country='China';
+
+     name
+--------------
+ Guy Crawford
+(1 row)

week-2/mandatory/2-ecommerce-db/cyf_ecommerce.sql

@@ -37,10 +37,10 @@ CREATE TABLE order_items (
     order_id    INT REFERENCES orders(id),
     product_id  INT REFERENCES products(id),
     quantity    INT NOT NULL
-);
+);'United Kingdom'
 
 INSERT INTO customers (name, address, city, country) VALUES ('Guy Crawford','770-2839 Ligula Road','Paris','France');
-INSERT INTO customers (name, address, city, country) VALUES ('Hope Crosby','P.O. Box 276, 4976 Sit Rd.','Steyr','United Kingdom');
+INSERT INTO customers (name, address, city, country) VALUES ('Hope Crosby','P.O. Box 276, 4976 Sit Rd.','Steyr',);
 INSERT INTO customers (name, address, city, country) VALUES ('Britanney Kirkland','P.O. Box 577, 5601 Sem, St.','Little Rock','United Kingdom');
 INSERT INTO customers (name, address, city, country) VALUES ('Amber Tran','6967 Ac Road','Villafranca Asti','United States');
 INSERT INTO customers (name, address, city, country) VALUES ('Edan Higgins','Ap #840-3255 Tincidunt St.','Arles','United States');

week-2/mandatory/3-api/cyf_ecommerce-api/.gitignore

@@ -0,0 +1,2 @@
+.env
+node_modules