is there a way to partition partitions? I read about the multipartitions, but they're not subdivisions, they are a cross product of two independent methods of tagging the data (like date and some other label)

plus1 - I don’t think there is a native way, I’d also like to see this. In the meantime I use static/dynamic partitions where the partition key is like

parent/child

split by a sensible delimiter

yep, was thinking of doing the same

Hi Fabio, To be clear, is the primary difference between what you’re asking for and multipartitions that you want the freedom to have a different second axis for each element in the first axis?

yes, that's exactly it @sean if we went for the cross product, we would have many combinations that aren't valid. So we would like the second axis to depend on the first axis

OK. Yeah I definitely see the appeal here, but I strongly suspect we’re not going to implement this in a first-class way anytime soon, simply because there’s al ready a ton of work going in other areas of partitions. I have to recommend that for now you follow @Guy McCombe’s advice and “simulate” this using a delimiter in the partition key.

When you do, @Fabio Picchi, link it here and I’ll throw my 👍 on it 😁