Add variableName and valueName to unpivot #246
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sezanzeb
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| unpivot(idVars: ColumnSelection, valueVars: ColumnSelection): LazyDataFrame; | ||
| /** | ||
| * @see {@link DataFrame.unpivot} | ||
| * @param options.streamable - Allow this node to run in the streaming engine. |
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can you specify that this is false by default.
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I'm confused about the default value.
For dataframes, it's false and cannot be changed: https://github.com/pola-rs/polars/blob/28d81963c1c03d64f6a71396da61b1668664824d/py-polars/src/dataframe/general.rs#L377, which is fine for this change I guess.
In the rust polars code for lazyframes, it doesn't have a default? I can't really read rust though https://github.com/pola-rs/polars/blob/28d81963c1c03d64f6a71396da61b1668664824d/py-polars/src/lazyframe/mod.rs#L1088
in python, streamable for lazyframes is true by default according to the docs https://docs.pola.rs/api/python/stable/reference/lazyframe/api/polars.LazyFrame.unpivot.html#polars.LazyFrame.unpivot
in nodejs-polars in dataframe.rs https://github.com/pola-rs/nodejs-polars/blob/main/src/lazy/dataframe.rs#L516 it's streamable: streamable.unwrap_or(false),, which I'm assuming means false by default.
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hmm, yeah I don't have a ton of context into this either. maybe @ritchie46 or @stinodego would have more context.
I also added
streamabletoLazyFrame.unpivot, though I haven't looked into it what it really does and don't know how to test it.DataFrame.unpivotdoesn't seem to have thestreamableoption: https://docs.pola.rs/api/python/stable/reference/dataframe/api/polars.DataFrame.unpivot.html#polars.DataFrame.unpivot, so I removed it from there.