[jira] [Created] (SPARK-33056) Add mapping between external Python types and CalendarIntervalType

["Maciej Szymkiewicz (Jira)" <ji...@apache.org>]

Maciej Szymkiewicz created SPARK-33056:
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             Summary: Add mapping between external Python types and CalendarIntervalType
                 Key: SPARK-33056
                 URL: https://issues.apache.org/jira/browse/SPARK-33056
             Project: Spark
          Issue Type: Sub-task
          Components: PySpark, SQL
    Affects Versions: 3.1.0
            Reporter: Maciej Szymkiewicz


We might consider adding support for at least collecting the results of queries containing interval types

{code:python}
spark.range(1).select(current_timestamp() - current_timestamp()).first()
{code}

and possibly a conversion in the opposite direction.

An obvious candidate would be {{datetime.timedelta}} which is mapped to {{net.razorvine.pickle.objects.TimeDelta}}, but semantics of these and {{CalendarInteval}} differs.



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