Type
fieldAggregation
Description
Define an aggregation to perform in an aggregate query 
Properties
Name Type Description
function function Type of aggregate function to perform (e.g. Count, Sum, etc.)
fieldName string Name of a field to perform this function on
alias string (Optional) A name that will represent the result of this function. If this isn't provided, a default name will be generated (e.g. Max_PercentCompleted when performing a Max function on the PercentCompleted field)