Haejoon Lee created SPARK-40336:
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Summary: Implement `DataFrame.cov`.
Key: SPARK-40336
URL: https://issues.apache.org/jira/browse/SPARK-40336
Project: Spark
Issue Type: Sub-task
Components: Pandas API on Spark
Affects Versions: 3.4.0
Reporter: Haejoon Lee
We should implement `DataFrameGroupBy.cov` for increasing pandas API coverage.
pandas docs:
https://pandas.pydata.org/docs/reference/api/pandas.core.groupby.DataFrameGroupBy.cov.html
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