How in CQL3 do we do millions of columns? We have one special table where all rows are basically composite keys and very very wide.

I was reading this question that implied two ways
[Does collections in CQL3 have certain limits?](https://stackoverflow.com/questions/18573507/does-collections-in-cql3-have-certain-limits)

Also, the types of our composite keys are String.bytes and ordered by STring

We have an exact matching table that is Decimal.bytes and ordered by decimal.

How would one handle this in CQL3?

thanks,
Dean