made exercises

How-to-retrieve-data-from-two-or-more-tables.sql

@@ -1,19 +1,83 @@
+    -- Exercise 1
 
+    SELECT category_name,
+    	product_name,
+        list_price
+    FROM categories c JOIN products p
+    	ON c.category_id = p.category_id
+    ORDER BY category_name, product_name ASC;
 
+    -- Exercise 2
 
+    SELECT first_name,
+    	last_name,
+        line1,
+        city,
+        state,
+        zip_code
+    FROM customers c JOIN addresses a
+    ON c.customer_id = a.customer_id
+    WHERE email_address LIKE 'allan.sherwood@yahoo.com';
 
+    -- Exercise 3
 
+    SELECT first_name,
+    	last_name,
+        line1,
+        city,
+        state,
+        zip_code
+    FROM customers c JOIN addresses a
+    	ON c.customer_id = a.customer_id
+    	AND c.shipping_address_id = address_id;
 
+    -- Exercise 4
 
+    SELECT last_name,
+    	first_name,
+        order_date,
+        product_name,
+        item_price,
+        discount_amount,
+        quantity
+    FROM customers c JOIN orders o
+    		ON c.customer_id = o.customer_id
+    	JOIN order_items i
+    		ON i.order_id = o.order_id
+    	JOIN products p 
+    		ON p.product_id = i.product_id
+    ORDER BY last_name, order_date, product_name;
+        
+    -- Exercise 5
 
+    SELECT p.product_name,
+    	p.list_price
+    FROM products p JOIN products p2
+    	ON p.list_price = p2.list_price AND p.product_id <> p2.product_id
+    ORDER BY product_name;
 
+    -- Exercise 6
 
+    SELECT c.category_name,
+    	p.product_id
+    FROM categories c LEFT JOIN products p
+    	ON c.category_id = p.category_id
+    WHERE p.product_id IS NULL;
 
+    -- Exercise 7
+
+    SELECT 'SHIPPED' AS ship_status,
+    	order_id,
+        order_date
+    FROM orders
+    WHERE ship_date IS NOT NULL
+
+    	UNION
+        
+    SELECT 'NOT SHIPPED' AS ship_status,
+    	order_id,
+        order_date
+    FROM orders
+    WHERE ship_date IS NULL
+    ORDER BY order_date;