# sum(...)

### sum(...)

Returns the sum of a given set of numbers

Works with the following datatypes:

This function works with 2.1 endpoint(s). What does this mean? »

The sum(...) function is most commonly used in $select aggregations to return the sum of a set of numeric values (Numbers). For example, to fetch the total amount spent on salaries in the City of Chicago: https://data.cityofchicago.org/resource/tt4n-kn4t.json?$select=sum(annual_salary)

It can also be used in $group aggregations, like this one to get the sum of salaries by job type: https://data.cityofchicago.org/resource/tt4n-kn4t.json?$select=job_titles,sum(annual_salary)&\$group=job_titles