Hi,
I need to have a bucket aggregation based on two disctinct terms; both terms are string so I could create a new field (maybe at insertion time) as concat of the two fields I need to aggregate.
But, also for learning purposes, I think it could be done using a group by of type Filter, right? In that case, could you please show me the right query to use, supposing the fileds name are f1 and f2?
Thanks,
Alberto