Analytic Functions (Azure Stream Analytics)

Stream Analytics Query Language provides the following analytic functions:

Analytic functions	...	...
ISFIRST (Azure Stream Analytics)	LAG (Azure Stream Analytics)	LAST (Azure Stream Analytics)
AnomalyDetection_SpikeAndDip	AnomalyDetection_ChangePoint

Note that analytic functions in Stream Analytics query language, unlike in T-SQL, are evaluated first. In Stream Analytics query language:

Analytic functions can be used in any place in the query that a scalar function is allowed. For example, you can use analytic functions in WHERE clause, JOIN clause, or GROUP BY clause.
Analytic function computations are performed over all the input events of the current query input, optionally you can limit analytic function to only consider events that match the partition_by_clause and when_clause.
Analytic functions are not affected by predicates in WHERE clause, join conditions in JOIN clause, or grouping expressions in GROUP BY clause of the current query.

See Also