Support writing JSON columns to Parquet and

Why it matters

This feature enables seamless integration of JSON data with Parquet format, allowing users to efficiently store and retrieve JSON-type columns without the need for conversion or workaround. It simplifies working with JSON data in analytics workflows that use Parquet files, improving compatibility and performance.

How to use it

Users can now directly write tables containing JSON columns into Parquet format using the standard ClickHouse INSERT INTO or SELECT ... INTO OUTFILE statements with Parquet output, and read JSON columns from Parquet files via SELECT statements by specifying the Parquet file as input.