Enum Aggregate 

#[non_exhaustive]
pub enum Aggregate {
    Sum,
    Count,
    Avg,
    Min,
    Max,
    Exists,
    Single,
    Join,
    First,
    Last,
    Median,
    Var,
    VarP,
    StdDev,
    StdDevP,
    RunningSum,
    RecordNumber,
    Percentage,
    WeightedAvg,
    DistinctSum,
    DistinctCount,
    DistinctAvg,
    DistinctVar,
    DistinctVarP,
    DistinctStdDev,
    DistinctStdDevP,
}

Aggregate functions: summaries over the rows in scope or a nested collection.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Sum

Count

Avg

Min

Max

Exists

Single

Join

First

Last

Median

Var

VarP

StdDev

StdDevP

RunningSum

RecordNumber

Percentage

WeightedAvg

DistinctSum

DistinctCount

DistinctAvg

DistinctVar

DistinctVarP

DistinctStdDev

DistinctStdDevP

Implementations

impl Aggregate

pub fn name(self) -> &'static str

The name, as written in expressions.

pub fn arity(self) -> (usize, usize)

The fewest and most arguments it takes.

pub fn info(self) -> FunctionInfo

The catalog entry.

pub fn from_name(name: &str) -> Option<Self>

The aggregate with this name or sum-prefixed alias, in any case.

pub fn all() -> impl Iterator<Item = Aggregate>

Every aggregate.

Trait Implementations

impl Clone for Aggregate

fn clone(&self) -> Aggregate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Aggregate

impl Debug for Aggregate

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

Formats the value using the given formatter.

impl Eq for Aggregate

impl Hash for Aggregate

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Aggregate

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Aggregate