Polars is much slower than DuckDB in conditional join + group_by/agg context...

Best way of sorting a group_by expression when taking first row...

Sorting a group_by expression when taking first row, keeping all columns...

GroupBy, column selection and mean in python-polars...

group_by and add a counter column in polars dataframe...

How to use polars.lit in group_by aggregation context...

How to group_by and then cross join with polars?...

Conditional aggregation of rows in polars...

Sort within groups on entire table...

Advice refactoring polars expr...

how can we resample time series in polars...

Filter on `list(Int64)` dtype in polars...

python-polars split dataframe into many dfs by column value using dictionary...

rolling sum with right-closed interval in duckdb...

Polars subtract numpy 1xn array from n columns...

How to idiomatically combine dataframes with overlapping rows and columns in Polars 1.0?...

How to translate a nested groupby apply aggregation from pandas in to polars?...

merge groups of columns in a polars dataframe to single columns...

when / then / otherwise with values from numpy array...

How to convert multi column expressions from Pandas to Polars...

Polars Selecting all columns without NaNs...

Sample from each group in polars dataframe?...

Iterate through a group_by with a tuple like pandas...

How count occurrences *across all columns* in a polars dataframe?...

Polars group_by + value_counts...

How to group_by and rolling in polars？...

Replace pivot operation for use in lazy evaluation with polars...

How to pivot a lazy dataframe based on the years of a date column?...

Weighted sum of a column in Polars dataframe...

What is the polars equivalent of converting a numeric (Year) column to date in python?...