SUM()

The SUM() aggregate function takes the name of a column as an argument and returns the sum of all the value in that column.

Syntax

SELECT SUM(column_name)
FROM table_name;

Example

For instance, suppose there’s a transactions table with the following values:

The given query will return the sum of all values from the amount column:

SELECT SUM(amount)
FROM transactions;

The result would be: