SQL SUM() Function

The SUM() Function

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

SELECT SUM(column_name) FROM table_name

We have the following "Purchases" table:

PU_ID	OrderDate	OrderPrice	Customer
1	2015/11/12	1000	Karmen
2	2015/10/23	1600	Tendulkar
3	2015/09/02	700	Karmen
4	2015/09/03	300	Karmen
5	2015/08/30	2000	Jensen
6	2015/10/04	100	Tendulkar

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

We use the following SQL statement:

SELECT SUM(OrderPrice) AS OrderTotal FROM Purchases

The result-set will look like this:

OrderTotal
5700

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