Aggregate Functions
COUNT
Returns the number of rows matching the query criteria.
SELECT COUNT(*) FROM RSSFeed WHERE Title = 'US'
COUNT(DISTINCT)
Returns the number of distinct, non-null field values matching the query criteria.
SELECT COUNT(DISTINCT Guid) AS DistinctValues FROM RSSFeed WHERE Title = 'US'
AVG
Returns the average of the column values.
SELECT Author, AVG(AnnualRevenue) FROM RSSFeed WHERE Title = 'US' GROUP BY Author
MIN
Returns the minimum column value.
SELECT MIN(AnnualRevenue), Author FROM RSSFeed WHERE Title = 'US' GROUP BY Author
MAX
Returns the maximum column value.
SELECT Author, MAX(AnnualRevenue) FROM RSSFeed WHERE Title = 'US' GROUP BY Author
SUM
Returns the total sum of the column values.
SELECT SUM(AnnualRevenue) FROM RSSFeed WHERE Title = 'US'