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2 changes: 1 addition & 1 deletion docs/querying/nested-columns.md
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ Druid [SQL JSON functions](./sql-json-functions.md) allow you to extract, transf

You can use the JSON functions in INSERT and REPLACE statements in SQL-based ingestion, or in a `transformSpec` in native ingestion as an alternative to using a [`flattenSpec`](../ingestion/data-formats.md#flattenspec) object to "flatten" nested data for ingestion.

Druid supports directly ingesting nested data with the following formats: JSON, Parquet, Avro, ORC.
Druid supports directly ingesting nested data with the following formats: JSON, Parquet, Avro, ORC, Protobuf.

## Example nested data

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