Enum ProjectedAggregateValue 

pub enum ProjectedAggregateValue {
    Count(u64),
    Sum(i128),
    ExactMean {
        total: i128,
        count: u64,
    },
    Scalar(Option<CanonicalValue>),
    Bool(bool),
}

One aggregate result cell.

Variants

Count(u64)

Result of ProjectedAggregate::Count, ProjectedAggregate::CountPresent, ProjectedAggregate::CountDistinct, or ProjectedAggregate::CountDistinctPresent.

Sum(i128)

Result of ProjectedAggregate::Sum, exact to the full i128 range.

ExactMean

Result of ProjectedAggregate::Mean: exact sum and contributing row count.

Fields

total: i128

Exact i128 numerator (0 when count == 0).

count: u64

Number of contributing rows (0 when no row contributed).

Scalar(Option<CanonicalValue>)

Result of ProjectedAggregate::Min / ProjectedAggregate::Max.

None means no row contributed to the group. That is distinct from Some(CanonicalValue::Null), which is a real NULL extreme over an optional column.

Bool(bool)

Result of ProjectedAggregate::Any / ProjectedAggregate::All.

Trait Implementations

impl Clone for ProjectedAggregateValue

fn clone(&self) -> ProjectedAggregateValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectedAggregateValue

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

Formats the value using the given formatter.

impl Eq for ProjectedAggregateValue

impl PartialEq for ProjectedAggregateValue

fn eq(&self, other: &ProjectedAggregateValue) -> 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 ProjectedAggregateValue