Hi,

> Is sorting by a value other than time ever going to be supported?


This could be a new feature, you could create an issue for this feature :)




> Is a percentile function (eg PERCENTILE_DISC) on the road map?


Percentile function could be implemented through UDF in 0.12.0-SNAPSHOT.


Welcome to contribute this function as a built-in UDF in IoTDB. You could refer 
to [1]




[1] 
http://iotdb.apache.org/UserGuide/Master/Operation%20Manual/UDF%20User%20Defined%20Function.html

Thanks,
--
Jialin Qiao
School of Software, Tsinghua University

乔嘉林
清华大学 软件学院

-----原始邮件-----
发件人:"Trevor Hart" <[email protected]>
发送时间:2021-03-12 17:10:05 (星期五)
收件人: dev <[email protected]>
抄送:
主题: Percentile?


Hello,



I'm trying to determine percentile values from sensor values.



In a normal RDBM this can be achieved by sorting sensor values and then using 
OFFSET and LIMIT to determine the 90th percentile etc. However in iotDB we cant 
sort by sensor values



Is sorting by a value other than time ever going to be supported?



Is a percentile function (eg PERCENTILE_DISC) on the road map?



Thanks 

Trevor




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