Converting parquet to csv on fly

[nbc]

Hello,

I have some Parquet files that I need to send as CSV/json (user choice). I’d like to know how I can do this on the fly in order to send the data directly to the end user.

So far, I imagine two possible approaches:

• Use something like COPY (FROM 'my.parquet') TO 'my-temp.csv' and then send the temporary file.
• Iterate through the Parquet file and convert each row with a Node.js package.

Is there a way to achieve this without having to write a temporary CSV file to disk or using another (slower) node package?

Regards