You can create columns without values. 

Are you talking about reading them back through the API ? 

I would suggest looking at your data model to see if there is a better way to support your read patterns. 

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
@aaronmorton

On 6 Jun 2011, at 10:18, Patrick de Torcy wrote:

It would be definetely useful to be able to have columns (or super columns) names WITHOUT their values. If these ones are pretty big or if there are a lot of columns, that would generate traffic not necessarily needed (if in the end you are just interrested by some column).
Moreover it doesn't seem to be a feature too difficult to implement (well, I think...)

Patrick