unionSet (Aggregate Function)

Union multiple sets. This attribute aggregator maintains a union of sets. The given input set is put into the union set and the union set is returned.

Syntax

    <OBJECT> unionSet(<OBJECT> set)

QUERY PARAMETERS

Name	Description	Default Value	Possible Data Types	Optional	Dynamic
set	The java.util.Set object that needs to be added into the union set.		OBJECT	No	Yes

Example 1

    insert into initStream
    select createSet(symbol) as initialSet
    from stockStream

    insert into distinctStockStream
    select unionSet(initialSet) as distinctSymbols
    from initStream WINDOW TUMBLING_TIME(10 sec);

distinctStockStream returns the set object which contains the distinct set of stock symbols received during a sliding window of 10 seconds.

Example 1​

Example 1