Ritchie Vink

We have this functionality. This is a `join`. I don't see much benefit of adding more code we must maintain, binary bloat etc, for something that maps column a to...

> EDIT: It turns out that you can use Expr.apply() directly, [the doc just makes it seem like apply() should be reserved for groupby contexts](https://pola-rs.github.io/polars/py-polars/html/reference/api/polars.apply.html). Yeap, apply is elementwise (in...

There were plans to do so. But `delta-rs` is based on `arrow-rs` and polars uses `arrow2`, so that are some difficulties.

I agree with most points except for calling `.lower` There should be only one correct argument and fuzzy matching is a slippery slope IMO. We could give an error that...

You need to use latest nightly to compile SIMD.

Tests fail, so have to investigate later.

Can you make a stackoverlfow question? Then others can learn from the answer.

Yes.. This is definitely something we want to add. Polars should be able to write partitioned datasets as well.

Hi @jg2562 what would you like to do, so that I have a bit more of an understanding what is possible.

The easiest thing to do is using arrow and pyarrow to communicate the memory. Then those arrow arrays can be used to create polars dataframes/series in python polars as well...