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https://issues.apache.org/jira/browse/SPARK-19428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852894#comment-15852894
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Hyukjin Kwon commented on SPARK-19428:
--------------------------------------
(FWIW, I think he meant...
{code}
>>> df = pandas.DataFrame(data)
>>> print(df.to_string)
<bound method DataFrame.to_string of A B
0 1 4
1 2 5
2 2 6
3 3 7
4 3 8
5 3 9>
>>> df.groupby("A").first()
B
A
1 4
2 5
3 7
{code}
in pandas..)
> Ability to select first row of groupby
> --------------------------------------
>
> Key: SPARK-19428
> URL: https://issues.apache.org/jira/browse/SPARK-19428
> Project: Spark
> Issue Type: Brainstorming
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Luke Miner
> Priority: Minor
>
> It would be nice to be able to select the first row from {{GroupedData}}.
> Pandas has something like this:
> {{df.groupby('group').first()}}
> It's especially handy if you can order the group as well.
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