Support Array Data Type for Arrow, Parquet, and ORC Formats

Why it matters

This feature enables ClickHouse to correctly handle columns with the Array data type when reading and writing data in popular columnar formats like Arrow, Parquet, and ORC. It solves compatibility issues and expands ClickHouse's ability to work seamlessly with nested or complex data stored in these formats.

How to use it

Users can insert and select data with Array columns in tables using the supported formats by simply specifying the file format (Arrow, Parquet, ORC) in their INSERT or SELECT queries. No additional settings are required besides using the appropriate format specification.