Mike Seddon created ARROW-12290:
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Summary: [Rust][DataFusion] Add input_file_name function
Key: ARROW-12290
URL: https://issues.apache.org/jira/browse/ARROW-12290
Project: Apache Arrow
Issue Type: Improvement
Reporter: Mike Seddon
Assignee: Mike Seddon
For lineage and diffing purposes (used by protocols like DeltaLake) it can be
useful to know the source of input data for a Dataframe. This adds the
`input_file_name` function which, like Spark, returns the name of the file
being read, or NULL if not available.
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