Whether the file has a header row, or the files each have a header row.
Delimiter between values in the file.
File format. Valid values are CSV, TSV, CLF, ELF, XLSX, and JSON.
CSV
TSV
CLF
ELF
XLSX
JSON
A row number to start reading data from.
Text qualifier. Valid values are DOUBLE_QUOTE and SINGLE_QUOTE.
DOUBLE_QUOTE
SINGLE_QUOTE