Enum AggFunc 

pub enum AggFunc {
    Count,
    Sum(String),
    Mean(String),
    Min(String),
    Max(String),
    Std(String),
    CountDistinct(String),
}

Aggregation function for group-by.

Variants

Count

Count rows in group

Sum(String)

Sum of column values

Mean(String)

Arithmetic mean

Min(String)

Minimum value

Max(String)

Maximum value

Std(String)

Sample standard deviation

CountDistinct(String)

Collect distinct count

Implementations

impl AggFunc

pub fn output_name(&self) -> String

Return the output column name for this aggregation.

Trait Implementations

impl Clone for AggFunc

fn clone(&self) -> AggFunc

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AggFunc

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.