ADO.NET Provider for FHIR

Build 24.0.9029

Aggregate Functions

COUNT

Returns the number of rows matching the query criteria.

SELECT COUNT(*) FROM Patient WHERE [name-use] = 'Bob'

COUNT(DISTINCT)

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

SELECT COUNT(DISTINCT Id) AS DistinctValues FROM Patient WHERE [name-use] = 'Bob'

AVG

Returns the average of the column values.

SELECT [address-city], AVG(AnnualRevenue) FROM Patient WHERE [name-use] = 'Bob'  GROUP BY [address-city]

MIN

Returns the minimum column value.

SELECT MIN(AnnualRevenue), [address-city] FROM Patient WHERE [name-use] = 'Bob' GROUP BY [address-city]

MAX

Returns the maximum column value.

SELECT [address-city], MAX(AnnualRevenue) FROM Patient WHERE [name-use] = 'Bob' GROUP BY [address-city]

SUM

Returns the total sum of the column values.

SELECT SUM(AnnualRevenue) FROM Patient WHERE [name-use] = 'Bob'

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Build 24.0.9029