different discounts 8 not 6.
First Query per Instructions
- Invoice History
 
Part 2
Once completed add the following queries to your database.
Create a query for each of the following that shows
- How many invoices were paid on time
 - Which doctor has the most invoices
 - Which doctor has the least invoices
 - How many invoices due after June 30- 2014
 - How many different doctors offered a discount.
 - How many discounts were offered altogether.
 
Total of 7 Queries for this assignment .