How do you group the SUM of rows by year in SQL

Question

SELECT          YEAR(OrderDate) 'Year', SUM(TotalDue)
FROM            Sales
GROUP BY        OrderDate
Order BY        OrderDate

How do I add each year together as ONE row? I wrote the query above, but the result still has the TotalDue by Year as individual rows. For example

Answer 1

You should GROUP BY Year, not OrderDate:

SELECT          YEAR(OrderDate), SUM(TotalDue)
FROM            Sales
GROUP BY        YEAR(OrderDate)
Order BY        OrderDate