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The SQL SUM() Function and How to Use It

Published Aug 9, 2017
Updated Oct 8, 2019

Introducing the SQL SUM() Function

SQL `SUM()` is an aggregate function that allows you to get the sum of the selected numeric values.

Syntax for SUM() in SQL

To perform summation in SQL, we need to first select the values we need to add. To do that, we use the SELECT statement:

Example
``````SELECT SUM(col_name)
FROM tbl_name
WHERE conditions;``````

In the syntax example above, you see three parameters:

• `col_name` defines the name of the column
• `tbl_name` defines the name of the table
• `conditions` defines specific conditions to filter particular values
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Summation in SQL: an Example

To understand how to use `SUM()` in SQL better, we'll show you a simple example using a demo database.

A Demo Database

We will be using a part of the table called Orders:

ID Name Count Price Date
1 Apple 120 11.9 2017-08-18
2 Milk 50 9.1 2016-12-19
4 Water 150 12.3 2017-07-10
5 Chocolate 85 21.9 2016-12-25

Using SQL SUM()

In the code example below, we take the data records from the Price column in the Orders table and find out the total sum:

Example
``````SELECT SUM(Price)
FROM Orders;``````

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