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Posted to dev@iotdb.apache.org by "Jialin Qiao (Jira)" <ji...@apache.org> on 2020/02/04 10:33:00 UTC

[jira] [Closed] (IOTDB-335) Separate query executions of the same timeseries with different aggregate functions may be optimized

     [ https://issues.apache.org/jira/browse/IOTDB-335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jialin Qiao closed IOTDB-335.
-----------------------------
    Fix Version/s: 0.10.0-SNAPSHOT
       Resolution: Fixed

> Separate query executions of the same timeseries with different aggregate functions may be optimized
> ----------------------------------------------------------------------------------------------------
>
>                 Key: IOTDB-335
>                 URL: https://issues.apache.org/jira/browse/IOTDB-335
>             Project: Apache IoTDB
>          Issue Type: Improvement
>            Reporter: Lei Rui
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.10.0-SNAPSHOT
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> For example,
> select avg(s1),sum(s1) from root.sg.d0
> select first_value(s1),first_time(s1) from root.sg.d0
> select count(s1), sum(s1) from root.sg.d0 group by ([1,100],2ms)
>  
> The separate query executions of the same timeseries with different aggregate functions may be a waste. Probably they can be achieved in one execution.



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