Multiple aggregations about clj-3df

[comnik]

Interesting! Yeah we'll have to think about maybe extending Aggregate to support multiple different aggregations on the same relation? Because both semantics can be useful at times (maybe not for Datalog, but in general).

[bachdavi]

An example would be:

:find ?team (count ?score) (avg ?score) (median ?score)
...

I think datomic implements it.

[comnik]

Quoting myself:

We can look at something like (->Aggregation [fn vars ...] [fn vars ...] ...+). Should also allow for the most efficient implementations (e.g. re-use the same grouping and compute multiple aggregates per group).