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Posted to issues@spark.apache.org by "Serge Rielau (Jira)" <ji...@apache.org> on 2022/08/19 17:56:00 UTC

[jira] [Created] (SPARK-40151) Fix return type for new median(interval) function

Serge Rielau created SPARK-40151:
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             Summary: Fix return type for new median(interval) function 
                 Key: SPARK-40151
                 URL: https://issues.apache.org/jira/browse/SPARK-40151
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 3.4.0
            Reporter: Serge Rielau


median() right now returns an interval of the same type as the input.
We should instead match mean and avg():

The result type is computed as for the arguments:

- year-month interval: The result is an `INTERVAL YEAR TO MONTH`.
- day-time interval: The result is an `INTERVAL DAY TO SECOND`.
- In all other cases the result is a DOUBLE.



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