Maybe try the to [1] and sqlp [2] commands from the qsv fork. From the README: sqlp: Run blazing-fast Polars SQL queries against several CSVs - converting quer

Maybe try the to [1] and sqlp [2] commands from the qsv fork. From the README: sqlp: Run blazing-fast Polars SQL queries against several CSVs - converting queries to fast LazyFrame expressions, processing larger than memory CSV files. to: Convert CSV files to PostgreSQL, SQLite, XLSX, Parquet and Data Package. [1] https://github.com/jqnatividad/qsv/blob/master/src/cmd/sqlp.rs#L2 https://github.com/jqnatividad/qsv/blob/master/src/cmd/sqlp.... [2] https://github.com/jqnatividad/qsv/blob/master/src/cmd/to.rs#L2 https://github.com/jqnatividad/qsv/blob/master/src/cmd/to.rs...