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https://issues.apache.org/jira/browse/IOTDB-335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029807#comment-17029807
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Xiangdong Huang commented on IOTDB-335:
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Hi, what is the difference with IOTDB-452?
> 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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