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GroupBy then combine changes column order #3404
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Technically the order of columns is not changed (the point is that the columns not specified for grouping are dropped). However, indeed we could add a sentence that if |
Yes, I think it is a great idea. |
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Hi all,
I just noticed that when groupby and then combine are used, the order of columns changes. I think it is a reasonable behavior, but I think it would be good to point out with a "warning" in the doc. This can lead to unexpected behavior in some cases.
Julia version: 1.9.3
DataFrames version: 1.5.0
Example:
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