This operator calculates the union of two input setsmerges the incomming tuples from each input stream. If an inorder approach is used (the default), the operator conserves the order.
Remark: This could lead to a blocking behaviour when no data is delivered via one input stream. You could use the Heartbeat operator Operator for input streams with a low data rate.
Parameter
none
Example
PQL
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
output = UNION(left, right) |
...