Enum AggregateSemanticIdentityV1 

pub enum AggregateSemanticIdentityV1 {
    Count,
    ExactCount,
    Sum,
    Min,
    Max,
    CountPresent,
    CountDistinct,
    CountDistinctPresent,
    Mean,
    Any,
    All,
}

Stable semantic identity for the aggregate functions available before ADR-0152 expansion.

Variants

Count

Exact count of rows in an earlier bounded source.

ExactCount

Exact count of the complete provider-admitted population.

Sum

Checked exact sum of one numeric field.

Min

Minimum under the field’s frozen typed comparator.

Max

Maximum under the field’s frozen typed comparator.

CountPresent

Exact count of present values.

CountDistinct

Exact distinct count including NoValue.

CountDistinctPresent

Exact distinct count excluding NoValue.

Mean

Exact total and contributing count without division.

Any

Boolean disjunction.

All

Boolean conjunction.

Implementations

impl AggregateSemanticIdentityV1

pub fn from_source_spelling(spelling: &str) -> Option<Self>

Looks up the semantic identity for one compiler-owned source spelling.

pub const fn descriptor(self) -> &'static AggregateSemanticDescriptorV1

Returns this identity’s complete v1 descriptor.

Trait Implementations

impl Clone for AggregateSemanticIdentityV1

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AggregateSemanticIdentityV1

impl Debug for AggregateSemanticIdentityV1

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

Formats the value using the given formatter.

impl Eq for AggregateSemanticIdentityV1

impl Hash for AggregateSemanticIdentityV1

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 Ord for AggregateSemanticIdentityV1

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for AggregateSemanticIdentityV1

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for AggregateSemanticIdentityV1

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for AggregateSemanticIdentityV1