How can I change NULL to 0 when getting a single value from a SQL function?

Question

I have a query that counts the price of all items between two dates. Here is the select statement:

SELECT SUM(Price) AS TotalPrice 
FROM Inventory
WHERE (DateAdd         


        

Answer 1

SELECT 0+COALESCE(SUM(Price),0) AS TotalPrice
FROM Inventory
WHERE (DateAdded BETWEEN @StartDate AND @EndDate)