Here are some cookbook examples: https://arrow.apache.org/cookbook/py/data.html#group-a-table https://arrow.apache.org/cookbook/py/data.html#group-a-table, http

Here are some cookbook examples: https://arrow.apache.org/cookbook/py/data.html#group-a-table https://arrow.apache.org/cookbook/py/data.html#group-a-table, https://arrow.apache.org/cookbook/ https://arrow.apache.org/cookbook/. Datasets would probably be a good approach for the billions size, see: https://blog.djnavarro.net/posts/2022-11-30_unpacking-arrow-datasets/ https://blog.djnavarro.net/posts/2022-11-30_unpacking-arrow-...