Computed columns

Apache Druid Q&A Google Groups
#1

Hello everyone,

I am playing around with druid and was ingesting data using flattenSpec. Is there a way i can create a computed column, i.e I have columns like student name, address, score1, score2, score3 (which is basically score1+score2)

If this is not available in druid can this be done via superset ?

Please advice.

Thank you.

#2

Hi Ramesh, take a look at postAggregations:
http://druid.io/docs/0.9.2/querying/post-aggregations.html

Does that do what you want?

#3

Hello Yang - Post Aggregation are only done on aggregations right ? In my case score3 is not an aggregation.