Comment by markus_zhang

I actually used it in an interview. I downloaded the csv/parquet file and load it into DuckDB.

In the future, I also plan to use it for testing production data pipelines: imagine you have a streaming cdc pipeline running in development env, and at the end you can dump every parquet into DuckDB as a verification — the end result should be the same. I could also use the same Database for testing, but I like DuckDB somehow.