SQL SUM() Function

The SUM() function returns the total sum of a numeric column.

SQL SUM() Syntax

SELECT SUM(column_name) FROM table_name

SQL SUM() Example

We have the following "Orders" table:

Id	OrderDate	OrderPrice	Customer
1	2008/11/12	1000	Navis
2	2008/10/23	1600	Nilsen
3	2008/09/02	700	Navis
4	2008/09/03	300	Navis
5	2008/08/30	2000	Jensen
6	2008/10/04	100	Nilsen

Now we want to find the sum of all "OrderPrice" fields".

We use the following SQL statement:

SELECT SUM(OrderPrice) AS OrderTotal FROM Orders

The result-set will look like this:

OrderTotal

5700