Expression

Command	Description
polars agg-groups	Creates an agg_groups expression.
polars arg-where	Creates an expression that returns the arguments where expression is true.
polars as	Creates an alias expression.
polars col	Creates a named column expression.
polars concat-str	Creates a concat string expression.
polars count	Creates a count expression.
polars datepart	Creates an expression for capturing the specified datepart in a column.
polars expr-not	Creates a not expression.
polars implode	Aggregates a group to a Series.
polars is-in	Creates an is-in expression or checks to see if the elements are contained in the right series
polars lit	Creates a literal expression.
polars max	Creates a max expression or aggregates columns to their max value.
polars mean	Creates a mean expression for an aggregation or aggregates columns to their mean value.
polars min	Creates a min expression or aggregates columns to their min value.
polars otherwise	Completes a when expression.
polars std	Creates a std expression for an aggregation of std value from columns in a dataframe.
polars sum	Creates a sum expression for an aggregation or aggregates columns to their sum value.
polars var	Create a var expression for an aggregation.
polars when	Creates and modifies a when expression.