1. Existing column names are listed under `Source column`. New columns identified from the import file under `Destination column`. NocoDB autofill destination column names based on the source column names.
2.
![image](/img/v2/upload-csv-3.png)
### Advance settings
- `# of rows to parse to infer datatype` - defaults to 500 rows.
- `Use first row as headers` - enabled by default. If checked, the first row will be treated as header row & will be used as field names.