You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2020/02/04 11:30:00 UTC

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

Jialin Qiao created IOTDB-452:
---------------------------------

             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.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)