Matthew Powers created SPARK-34165:
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Summary: Add countDistinct option to Dataset#summary
Key: SPARK-34165
URL: https://issues.apache.org/jira/browse/SPARK-34165
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 3.2.0
Reporter: Matthew Powers
The Dataset#summary function supports options like count, mean, min, and max.
It's a great little function for lightweight exploratory data analysis.
A count distinct of each column is a common exploratory data analysis workflow.
This should be easy to add (piggybacking off the existing countDistinct code),
entirely backwards compatible, and will help a lot of users.
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