PERF: Avoid deep copies when casting dtypes in merge #62902
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phofl
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Performance
mroeschke
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Oct 29, 2025
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Thanks @phofl |
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.stumbled upon this a while ago, this can be bad if the dataframe is large and the copy causes a consolidation