[jira] [Created] (IOTDB-452) Do all aggregations of one series at one pass in GroupBy

[Jialin Qiao (Jira)]

Jialin Qiao created IOTDB-452:
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             Summary: Do all aggregations of one series at one pass in GroupBy
                 Key: IOTDB-452
                 URL: https://issues.apache.org/jira/browse/IOTDB-452
             Project: Apache IoTDB
          Issue Type: Improvement
            Reporter: Jialin Qiao


For example

 

select avg(s1), count(s1), first(s1) from root.sg.d1 group by ([100,199],10ms)

 

We could just construct one aggregate reader and get three aggregation results 
at one pass.



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