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If one has to load the same whole CSV several times then it makes sense to convert it to parquet, or even partitioned parquet dataset. DuckDB can query parquet (and CSV) files directly, so one can minimize RAM usage this way as needed.
If one has to load the same whole CSV several times then it makes sense to convert it to parquet, or even partitioned parquet dataset. DuckDB can query parquet (and CSV) files directly, so one can minimize RAM usage this way as needed.