Quick way to check if there are non-header rows or not

[rzmk]

Is there a quick way to specifically check if a file has non-header rows or not? For example:

a,b

We assume the first row is a header row and there are no non-header rows so some value like true or false is returned based on implementation.

[jqnatividad]

Hhmmm... for a single row, it's not possible.

But if we have at least a few rows, sniff makes a good guesstimate, but it still sometimes fails for otherwise valid CSVs.