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From "Alexander Hagerf (Jira)" <j...@apache.org>
Subject [jira] [Created] (SPARK-30131) Add array_median function
Date Wed, 04 Dec 2019 23:21:00 GMT
Alexander Hagerf created SPARK-30131:
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             Summary: Add array_median function
                 Key: SPARK-30131
                 URL: https://issues.apache.org/jira/browse/SPARK-30131
             Project: Spark
          Issue Type: New Feature
          Components: SQL
    Affects Versions: 2.4.4
            Reporter: Alexander Hagerf
             Fix For: 3.0.0


It is known that there isn't any exact median function in Spark SQL, and this might be a difficult
problem to solve efficiently. However, to find the median for an array should be a simple
task, and something that users can utilize when collecting numeric values to a list or set.

 

This can already be achieved by using sorting and choosing element, but can get cumbersome
and if a fully tested function is provided in the API, I think it can solve some headache
for many.



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