How to retrieve data
from two or more tables
Exercises
Write a SELECT statement that joins the Categories table to the Products table and returns these columns: category_name, product_name, list_price.
Sort the result set by category_name and then by product_name in ascending sequence.
Write a SELECT statement that joins the Customers table to the Addresses table and returns these columns: first_name, last_name, line1, city, state, zip_code.
Return one row for each address for the customer with an email address of allan.sherwood@yahoo.com.
Write a SELECT statement that joins the Customers table to the Addresses table and returns these columns: first_name, last_name, line1, city, state, zip_code.
Return one row for each customer, but only return addresses that are the shipping address for a customer.
Write a SELECT statement that joins the Customers, Orders, Order_Items, and Products tables. This statement should return these columns: last_name, first_name, order_date, product_name, item_price, discount_amount, and quantity.
Use aliases for the tables.
Sort the final result set by last_name, order_date, and product_name.
Write a SELECT statement that returns the product_name and list_price columns from the Products table.
Return one row for each product that has the same list price as another product.
Hint: Use a self-join to check that the product_id columns aren’t equal but the list_price columns are equal.
Sort the result set by product_name.
Write a SELECT statement that returns these two columns:
category_name
The category_name column from the Categories table
product_id
The product_id column from the Products table
Return one row for each category that has never been used. Hint: Use an outer join and only return rows where the product_id column contains a null value.
7. Use the UNION operator to generate a result set consisting of three columns from the Orders table:
ship_status A calculated column that contains a value of SHIPPED or NOT
SHIPPED
order_id The order_id column
order_date The order_date column
If the order has a value in the ship_date column, the ship_status column should contain a value of SHIPPED. Otherwise, it should contain a value of NOT SHIPPED.
Sort the final result set by order_date.
