Allison Wang created SPARK-45258:
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Summary: Refine docstring of `sum`
Key: SPARK-45258
URL: https://issues.apache.org/jira/browse/SPARK-45258
Project: Spark
Issue Type: Sub-task
Components: Documentation, PySpark
Affects Versions: 4.0.0
Reporter: Allison Wang
Refine the docstring of function `sum` (e.g provide examples with groupBy)
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