Struct AggregateRowPayload 

pub struct AggregateRowPayload {
    pub group: Option<GroupKey>,
    pub value: AggregateValue,
}

Aggregate-result envelope. The executor postcard-encodes one of these into each aggregate output ResultRow’s payload (with origin = 0 and seq = SeqNum(0) as sentinel-row markers; the group identifier lives in the group field, not the row metadata, so the wire shape is uniform across grouped + ungrouped queries).

Fields

group: Option<GroupKey>

Group identifier. None when the query had no group_by (single-bucket aggregate).

value: AggregateValue

Phase E-1 ships Count only; future aggregate functions (Sum, Avg, DistinctCountHll, PercentileTDigest) land via additional variants on this enum.

Trait Implementations

impl Clone for AggregateRowPayload

fn clone(&self) -> AggregateRowPayload

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateRowPayload

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AggregateRowPayload

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AggregateRowPayload

fn eq(&self, other: &AggregateRowPayload) -> 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 Serialize for AggregateRowPayload

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AggregateRowPayload