asterix-app/src/test/resources/AQLTS/queries-sql-like/union.aql - asterixdb - Gitiles

 (from $l in foo1()
 select $l)
 union
 (from $l in foo2()
 select $l)
 union
 (from $l in foo3()
 select $l)
	(from $l in foo1()
	select $l)
	union
	(from $l in foo2()
	select $l)
	union
	(from $l in foo3()
	select $l)