[jira] [Commented] (BEAM-11710) groupby cannot aggregate grouped column

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-11710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17296933#comment-17296933 ] 

Beam JIRA Bot commented on BEAM-11710:
--------------------------------------

This issue was marked "stale-assigned" and has not received a public comment in 7 days. It is now automatically unassigned. If you are still working on it, you can assign it to yourself again. Please also give an update about the status of the work.

> groupby cannot aggregate grouped column
> ---------------------------------------
>
>                 Key: BEAM-11710
>                 URL: https://issues.apache.org/jira/browse/BEAM-11710
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py-core
>    Affects Versions: 2.26.0, 2.27.0, 2.28.0
>            Reporter: Brian Hulette
>            Priority: P2
>              Labels: dataframe-api
>
> pandas allows you to aggregate on the same column that you are grouping on. Attempting this in the Beam implementation results in an error.
> df.groupby('group')[['group', 'foo']].count()



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