Aggregate Functions
Examples of Aggregate Functions
Below are several examples of SQL aggregate functions. You can use these with a GROUP BY clause to aggregate rows based on the specified GROUP BY criterion. This can be a reporting tool.
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'
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'