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 CampaignPerformance WHERE Device = 'Mobile devices with full browsers'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Clicks) AS DistinctValues FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'

AVG

Returns the average of the column values.

SELECT Device, AVG(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device

MIN

Returns the minimum column value.

SELECT MIN(AnnualRevenue), Device FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device

MAX

Returns the maximum column value.

SELECT Device, MAX(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device

SUM

Returns the total sum of the column values.

SELECT SUM(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'

COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Clicks) AS DistinctValues FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'

AVG

Returns the average of the column values.

SELECT Device, AVG(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'  GROUP BY Device

MIN

Returns the minimum column value.

SELECT MIN(AnnualRevenue), Device FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device

MAX

Returns the maximum column value.

SELECT Device, MAX(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device

SUM

Returns the total sum of the column values.

SELECT SUM(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'