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perf(pandas): `Alias` executes its children twice
See original GitHub issueOn the Pandas backend, Alias executes the expression it is renaming (and the tree under it) twice
See this notebook
Issue Analytics
- State:
- Created a year ago
- Comments:11 (7 by maintainers)
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Yep that makes sense. We’ll do a 3.2 release before 4.0 lands.
thanks! It’s somewhat significant for us. I think I have a fix and can open a PR this week.
I believe this just needs to be changed to
return data(databeing the second argument) but I’ll check it against the Ibis tests and add a re-execution test https://github.com/ibis-project/ibis/blob/00c83e6912263d58cbf04d7904bc0e96ccb03af0/ibis/backends/pandas/execution/generic.py#L926-L930