+1 for the idea. ----------------------------------- Xiangdong Huang School of Software, Tsinghua University
黄向东 清华大学 软件学院 Jialin Qiao <qiaojia...@apache.org> 于2019年12月5日周四 下午6:42写道： > Hi, > > This is a good optimization :) > > Thanks, > Jialin Qiao > > Lei Rui (Jira) <j...@apache.org> 于2019年12月3日周二 下午2:20写道： > > > Lei Rui created IOTDB-335: > > ----------------------------- > > > > Summary: Separate query execution of the same timeseries > with > > different aggregate functions > > Key: IOTDB-335 > > URL: https://issues.apache.org/jira/browse/IOTDB-335 > > Project: Apache IoTDB > > Issue Type: Improvement > > Reporter: Lei Rui > > > > > > 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) > > > > > > > > Probably the results of the same timeseries with different aggregate > > functions can be achieved in one query execution process. > > > > > > > > -- > > This message was sent by Atlassian Jira > > (v8.3.4#803005) > > > > > -- > ————————————————— > Jialin Qiao > School of Software, Tsinghua University > > 乔嘉林 > 清华大学 软件学院 >
