These settings are available in system.settings and are autogenerated from the ClickHouse snapshot.
format_csv_allow_double_quotes
If it is set to true, allow strings in double quotes.
format_csv_allow_single_quotes
If it is set to true, allow strings in single quotes.
format_csv_delimiter
The character to be considered as a delimiter in CSV data. If setting with a string, a string has to have a length of 1.
format_csv_null_representation
Custom NULL representation in CSV format