Enum BuiltInAggregation 

pub enum BuiltInAggregation {
    Sum,
    Mean,
    Min,
    Max,
    Count,
    UniqueCount,
    Median,
    First,
    Last,
}

Built-in aggregation functions.

Each variant represents a different aggregation strategy that can be applied to grouped column values.

Variants

Sum

Sum of values.

Mean

Average of values.

Min

Minimum value.

Max

Maximum value.

Count

Count of values.

UniqueCount

Count of unique values.

Median

Median value.

First

First value.

Last

Last value.

Implementations

impl BuiltInAggregation

pub fn aggregate_f64(&self, values: &[f64]) -> Option<f64>

Aggregates a list of f64 values.

Parameters

• values: The numeric values to aggregate.

Returns

• Option<f64>: The aggregated result, or None if the input is empty.

pub fn aggregate_strings(&self, values: &[String]) -> Option<String>

Aggregates a list of string values.

Parameters

• values: The string values to aggregate.

Returns

• Option<String>: The aggregated result, or None if the input is empty.

Trait Implementations

impl Clone for BuiltInAggregation

fn clone(&self) -> BuiltInAggregation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuiltInAggregation

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

Formats the value using the given formatter.

impl PartialEq for BuiltInAggregation

fn eq(&self, other: &BuiltInAggregation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BuiltInAggregation

impl Eq for BuiltInAggregation

impl StructuralPartialEq for BuiltInAggregation