This specifies the field on which the aggregate operation will be performed. This field is typically a numerical value.
This specifies the operation to execute on the field value.
Possible operations:
-- sum: Computes the sum of all values.
-- average: Computes the average of all values.
--minimum: Retrieves the smallest of all values.
--maximum: Retrieves the largest of all values.
Describe a computed field request
See: Computed Fields