Enum AggregateFunction 

pub enum AggregateFunction {
    Count,
    Sum(String),
    Avg(String),
    Min(String),
    Max(String),
    First,
    Last,
}

Aggregate function types

Variants

Count

Count number of solutions

Sum(String)

Sum of field values

Avg(String)

Average of field values

Min(String)

Minimum field value

Max(String)

Maximum field value

First

First solution

Last

Last solution

Implementations

impl AggregateFunction

pub fn field_name(&self) -> Option<&str>

Get the field name for field-based aggregates

Trait Implementations

impl Clone for AggregateFunction

fn clone(&self) -> AggregateFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateFunction

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

Formats the value using the given formatter.

impl PartialEq for AggregateFunction

fn eq(&self, other: &AggregateFunction) -> 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 StructuralPartialEq for AggregateFunction