Recruits support aggregate functions. These are ao called because they accept a record set and a field name as inputs and generate a single result.
The supported aggregate functions are the following:
1) Count (FIELD) - Counts the number of occurences of a field.
2) Avg (FIELD) - Calculates the average (mean) of the numerical values of a field.
3) Sum (FIELD) - Calculates the sum of the numerical values.
4) Min (FIELD) - Calculates the minimum numerical value of a field.
5) Max (FIELD) - Calculates the maximum numerical value of a field.
The aggregate functions are to be invoked in the field expressions in rescel. By default they are applied to the totality of the records in a record set.
