Very big dataset: know number of observations without importing it

[Jacques La Fontaine]

Hello everyone,
I have a very big dataset which my machine is not able to open because of memory issues. I can of course import it in batches (a number of observations per time). However, I can I get the total number of observations that are present in the dataset without loading it all?

Thanks in advance

[Wouter Wakker]

Yes, with describe using ...

See help describe