COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM Departments WHERE Id = '1668776136772254'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Id) AS DistinctValues FROM Departments WHERE Id = '1668776136772254'

AVG

Returns the average of the column values.

SELECT OfficeId, AVG(Size) FROM Departments WHERE Id = '1668776136772254'  GROUP BY OfficeId

MIN

Returns the minimum column value.

SELECT MIN(Size), OfficeId FROM Departments WHERE Id = '1668776136772254' GROUP BY OfficeId

MAX

Returns the maximum column value.

SELECT OfficeId, MAX(Size) FROM Departments WHERE Id = '1668776136772254' GROUP BY OfficeId

SUM

Returns the total sum of the column values.

SELECT SUM(Size) FROM Departments WHERE Id = '1668776136772254'