COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM Subscriber WHERE EmailAddress = 'john.doe@example.com'

COUNT(DISTINCT)

Returns the number of distinct, non-null field values matching the query criteria.

SELECT COUNT(DISTINCT Id) AS DistinctValues FROM Subscriber WHERE EmailAddress = 'john.doe@example.com'

AVG

Returns the average of the column values.

SELECT Status, AVG(AnnualRevenue) FROM Subscriber WHERE EmailAddress = 'john.doe@example.com'  GROUP BY Status

MIN

Returns the minimum column value.

SELECT MIN(AnnualRevenue), Status FROM Subscriber WHERE EmailAddress = 'john.doe@example.com' GROUP BY Status

MAX

Returns the maximum column value.

SELECT Status, MAX(AnnualRevenue) FROM Subscriber WHERE EmailAddress = 'john.doe@example.com' GROUP BY Status

SUM

Returns the total sum of the column values.

SELECT SUM(AnnualRevenue) FROM Subscriber WHERE EmailAddress = 'john.doe@example.com'