# SQL SUM() Function

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## The SUM() Function

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

### SQL SUM() Syntax

SELECT SUM(column_name) FROM table_name;

## Demo Database

In this tutorial we will use the well-known Northwind sample database.

Below is a selection from the "OrderDetails" table:

OrderDetailID | OrderID | ProductID | Quantity
--- | --- | --- | ---
1 | 10248 | 11 | 12
2 | 10248 | 42 | 10
3 | 10248 | 72 | 5
4 | 10249 | 14 | 9
5 | 10249 | 51 | 40

## SQL SUM() Example

The following SQL statement finds the sum of all the "Quantity" fields for the "OrderDetails" table:

## Example

SELECT SUM(Quantity) AS TotalItemsOrdered FROM OrderDetails;
Try it yourself »
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