MySQL SUM Function

MySQL SUM Aggregate Function is useful to calculate the total or Sum of records (or rows) selected by the SELECT Statement. For example, you can use this MySQL Sum function to find the Total Sales in your Area or to find Total manufacturing Cost. The basic syntax of the SUM in MySQL is as shown below:

SELECT SUM ([Column_Name])
FROM [Source]

For this MySQL SUM function example, We are going to use the below shown data

MySQL SUM Example 1

MySQL SUM Example

The Sum function returns the sum of all records present in the specified column. For example, the following Sum function query calculates the Sum of total number records present in Yearly_Income column from the customer details table.

-- SUM in MySQL Example
SELECT SUM(Yearly_Income) AS `Total Income`
FROM customerdetails;
MySQL SUM Function Example 1

MySQL SUM Function Group By Example

In general, we use this Sum function to calculate the total product price belongs to a particular color or category, etc. In this situation, we can use Group By Clause to group the products by color or category. Next, we use the Sum Aggregate Function to find the total in each group. Let us see the MySQL example SELECT Statement.

-- SUM Function in MySQL Example
USE company;
SELECT  Education,
        SUM(Yearly_Income)
FROM customerdetails
GROUP BY Education;

Above Sum query group the Customers by their education, and finds the total income in each group (education qualification)

MySQL SUM Function Example 2

MySQL SUM Distinct Example

It allows you to use the DISTINCT keyword along with the SUM function. The SUM (DISTINCT Column_Name) calculate the Sum of Unique number of records present in the table.

TIP: In MySQL, DISTINCT Keyword is used to remove the Duplicates from the specified column Name.

-- SUM Function in MySQL Example
USE company;
SELECT  Education,
        SUM(DISTINCT Yearly_Income)
FROM customerdetails
GROUP BY Education;

Above Query finds Unique records (by removing duplicates) in Yearly_Income, and then calculates the Sum

MySQL SUM Function Example 3