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https://issues.apache.org/jira/browse/SPARK-36617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17406956#comment-17406956
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Maciej Szymkiewicz commented on SPARK-36617:
--------------------------------------------
FYI [~hyukjin.kwon]
> Inconsistencies in approxQuantile annotations
> ---------------------------------------------
>
> Key: SPARK-36617
> URL: https://issues.apache.org/jira/browse/SPARK-36617
> Project: Spark
> Issue Type: Improvement
> Components: PySpark, SQL
> Affects Versions: 3.1.0, 3.2.0, 3.3.0
> Reporter: Maciej Szymkiewicz
> Priority: Major
>
> I've been reviewing PR in the legacy repo
> (https://github.com/zero323/pyspark-stubs/pull/552) and it looks like we have
> two problems with annotations for {{approxQuantile}}.
> First of all {{DataFrame.approxQuantile}} should overload definition to match
> input arguments ‒ if col is a sequence then result should be a list of lists:
> {code:python}
> @overload
> def approxQuantile(
> self,
> col: str,
> probabilities: Union[List[float], Tuple[float]],
> relativeError: float
> ) -> List[float]: ...
> @overload
> def approxQuantile(
> self,
> col: Union[List[str], Tuple[str]],
> probabilities: Union[List[float], Tuple[float]],
> relativeError: float
> ) -> List[List[float]]: ...
> {code}
> Additionally {{DataFrameStatFunctions.approxQuantile}} should match whatever
> we have in {{DataFrame}}.
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