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STDEV (Azure Stream Analytics)

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Returns the statistical standard deviation of all values in a group. Null values are ignored.

Syntax

STDEV (expression )

Arguments

expression

Is an expression of the exact numeric or approximate numeric data type category. STDEV can be used with bigint and float columns. Aggregate functions and sub queries are not permitted.

Return Types

float

Examples

SELECT System.Timestamp() AS OutTime, TollId, STDEV (Toll)   
FROM Input  
GROUP BY TollId, TumblingWindow(minute,3)