Returns the row number of the current row as it appeared in the original , source dataset before any steps had been applied.
The following transforms might make original row information invalid or otherwise unavailable. In these cases, the function returns null values:
NOTE: If the dataset is sourced from multiple files, a predictable original source row number cannot be guaranteed. This function may return unexpected results, and null values are returned.
Tip: If the source row information is still available, you can hover over the left side of a row in the data grid to see the source row number in the original source data.