Support multiple measures in one query #97
Description
Is your feature request related to a problem? Please describe.
Right now we only compute one measure in one query however multiple measures are doable with some changes. This should save lots of duplicate computation work on dimension
Describe the solution you'd like
Creating multiple measure vectors and reduce them at one time.
Additional context
Hyperloglog is tricky to be computed together with other agg functions since it does not go through the normal sort reduce stage.