STDEV (Azure Stream Analytics)
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)
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