COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Email) AS DistinctValues FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org'

AVG

Returns the average of the column values.

SELECT Username, AVG(AnnualRevenue) FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org'  GROUP BY Username

MIN

Returns the minimum column value.

SELECT MIN(AnnualRevenue), Username FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org' GROUP BY Username

MAX

Returns the maximum column value.

SELECT Username, MAX(AnnualRevenue) FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org' GROUP BY Username

SUM

Returns the total sum of the column values.

SELECT SUM(AnnualRevenue) FROM NorthwindOData WHERE Email = 'ana.trujilo@northwind.org'