polars::prelude::expr

Trait PhysicalAggExpr

Source 
pub trait PhysicalAggExpr {
    // Required methods
    fn evaluate(
        &self,
        df: &DataFrame,
        groups: &GroupsProxy,
    ) -> Result<Series, PolarsError>;
    fn root_name(&self) -> Result<&PlSmallStr, PolarsError>;
}

Required Methods§

Source

fn evaluate( &self, df: &DataFrame, groups: &GroupsProxy, ) -> Result<Series, PolarsError>

Source

fn root_name(&self) -> Result<&PlSmallStr, PolarsError>

Implementors§