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Posted to notifications@iotdb.apache.org by "Steve Yurong Su (Jira)" <ji...@apache.org> on 2020/10/15 09:31:00 UTC

[jira] [Created] (IOTDB-944) Support UDTF (User-defined Timeseries Generating Function)

Steve Yurong Su created IOTDB-944:
-------------------------------------

             Summary: Support UDTF (User-defined Timeseries Generating Function)
                 Key: IOTDB-944
                 URL: https://issues.apache.org/jira/browse/IOTDB-944
             Project: Apache IoTDB
          Issue Type: Sub-task
          Components: Core/Engine
            Reporter: Steve Yurong Su
             Fix For: 0.11.0


A UDTF generates a variable number of output data points for a single input row or a single input window (time-based or size-based).

 

Examples:

select a, b, add(a, b), multiply(a, b) from root.sg.d;

select udtf(*) from root.sg.d;



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