SQL

Generate a listing of all purchases made by the customers, using the output shown in the following as your guide. Sort the results by customer code, invoice number, and product description. You will need to join INVOICE, LINE, PRODUCT

Create a query to produce the total purchase per invoice, generating the results shown in the following Figure, sorted by invoice number. The invoice total is the sum of the product purchases in the LINE that corresponds to the INVOICE.

List the balances of customers who have made purchases during the current invoice cyclethat is, for the customers who appear in the INVOICE table. Sort the results by customer code, as shown in the following Figure. Note: you will need to use the DISTINCT keyword and join the INVOICE and CUSTOMER tables