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 Company WHERE CompanyNumber = '1000'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Name) AS DistinctValues FROM Company WHERE CompanyNumber = '1000'

AVG

Returns the average of the column values.

SELECT Address, AVG(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000' GROUP BY Address

MIN

Returns the minimum column value.

SELECT MIN(STCrAdjPercent), Address FROM Company WHERE CompanyNumber = '1000' GROUP BY Address

MAX

Returns the maximum column value.

SELECT Address, MAX(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000' GROUP BY Address

SUM

Returns the total sum of the column values.

SELECT SUM(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000'

COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM Company WHERE CompanyNumber = '1000'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Name) AS DistinctValues FROM Company WHERE CompanyNumber = '1000'

AVG

Returns the average of the column values.

SELECT Address, AVG(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000'  GROUP BY Address

MIN

Returns the minimum column value.

SELECT MIN(STCrAdjPercent), Address FROM Company WHERE CompanyNumber = '1000' GROUP BY Address

MAX

Returns the maximum column value.

SELECT Address, MAX(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000' GROUP BY Address

SUM

Returns the total sum of the column values.

SELECT SUM(STCrAdjPercent) FROM Company WHERE CompanyNumber = '1000'