Aggregate functions
The following ANSI-standard SQL aggregate functions are available to local SQL for use with data retrieval:
SUM( ), for totaling all numeric values in a column
AVG( ), for averaging all non-NULL numeric values in a column
MIN( ), for determining the minimum value in a column
MAX( ), for determining the maximum value in a column
COUNT( ), for counting the number of values in a column that match specified criteria
Complex aggregate expressions are supported, such as
SUM( Field * 10 )
SUM( Field ) * 10
SUM( Field1 + Field2 )