groupby cannot aggregate grouped column
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bug
core
dataframe
dsl
P3
python
- Dominant language
- Java
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Description
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()
Imported from Jira [BEAM-11710](https://issues.apache.org/jira/browse/BEAM-11710). Original Jira may contain additional context.
Reported by: bhulette.
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