Union processor
Appends records from a second flow.
The Union processor allows you to append fields and records from one input flow to the end of another. You can choose to include or exclude duplicates from the resulting flow. Users familiar with Qlik script may know this operation as concatenate.
Usage
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The Union processor can have multiple input flows and can generate only one output flow.
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All inputs don't need to have the same fields. If one input has a field the other does not have, the field is added and missing values filled with Null.
Properties
Properties to configure to append records from multiple inputs.
| Property | Configuration |
|---|---|
| Union all | Enable this option to return all values, including duplicates, while appending your fields. If this option is disabled, all duplicate values will be excluded from the output. |
To rename the processor or edit its description, click the 
Edit icon next to the processor name in the Properties panel.