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When using the File Columns file columns in an output Stream table of the File Collectorfile collector, use the format:

<pipe name>.<attribute name>

You do not need to include the name of the target Record Noderecord node, or any child Records Nodes record nodes between the target and the Attribute Nodeattribute node. Using the example grammar and File Columns file columns definition from Creating the File Columns for the File Collector, if the File Collector file collector was linked to an output Stream table with a pipe named in, you could use the first name from a customer record with the expression

in.firstName

If you defined a Stream Attribute an attribute FirstName, and wanted it to be populated for both customers and agents, you could use the expression:

ifNull(in.firstName, in.givenName)

Note that if If you drag-and-drop File Columns file columns from the File Collector file collector into an output Stream table (to create Stream Attributesattributes), the Attribute Expressions attribute expressions will be correctly configured automatically.

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