Lazyframe

Command	Description
polars agg	Performs a series of aggregations from a group-by.
polars collect	Collect lazy dataframe into eager dataframe.
polars explode	Explodes a dataframe or creates a explode expression.
polars fetch	Collects the lazyframe to the selected rows.
polars fill-nan	Replaces NaN values with the given expression.
polars fill-null	Replaces NULL values with the given expression.
polars filter	Filter dataframe based in expression.
polars filter-with	Filters dataframe using a mask or expression as reference.
polars flatten	An alias for polars explode.
polars group-by	Creates a group-by object that can be used for other aggregations.
polars into-lazy	Converts a dataframe into a lazy dataframe.
polars join	Joins a lazy frame with other lazy frame.
polars median	Median value from columns in a dataframe or creates expression for an aggregation
polars quantile	Aggregates the columns to the selected quantile.
polars rename	Rename a dataframe column.
polars save	Saves a dataframe to disk. For lazy dataframes a sink operation will be used if the file type supports it (parquet, ipc/arrow, csv, and ndjson).
polars select	Selects columns from lazyframe.
polars shift	Shifts the values by a given period.
polars sort-by	Sorts a lazy dataframe based on expression(s).
polars unique	Returns unique values from a dataframe.
polars with-column	Adds a series to the dataframe.