rename

Renames fields by exact mapping or regex patterns.

Write with --output. A trailing path is not a positional argument.

# Rename by exact mapping
undatum rename data.csv --map "old_name:new_name,old2:new2" --output output.csv

# Rename using regex
undatum rename data.jsonl --pattern "^prefix_" --replacement "" --output output.jsonl
undatum rename workbook.xlsx --table Sheet2 --map "city:city_name" --output out.jsonl

Key options: --map, --pattern, --replacement, --output. Also accepts --table, --flatten-nested, --on-error, --error-log, and --quotechar (shared options).