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CSV Auto Detection

duckdb.org

When using read_csv, the system tries to automatically infer how to read the CSV file using the CSV sniffer. This step is necessary because CSV files are not self-describing and come in many different dialects. The auto-detection works roughly as follows: Detect the dialect of the CSV file (delimiter, quoting rule, escape) Detect the types of each of the columns Detect whether or not the file has a header row By def…

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