Enum datafusion::physical_plan::hash_aggregate::AggregateMode

pub enum AggregateMode {
    Partial,
    Final,
    FinalPartitioned,
}

Hash aggregate modes

Variants

Partial

Partial aggregate that can be applied in parallel across input partitions

Final

Final aggregate that produces a single partition of output

FinalPartitioned

Final aggregate that works on pre-partitioned data.

This requires the invariant that all rows with a particular grouping key are in the same partitions, such as is the case with Hash repartitioning on the group keys. If a group key is duplicated, duplicate groups would be produced

Trait Implementations

impl Clone for AggregateMode

fn clone(&self) -> AggregateMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AggregateMode

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

Formats the value using the given formatter.

impl PartialEq<AggregateMode> for AggregateMode

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for AggregateMode

impl Eq for AggregateMode

impl StructuralEq for AggregateMode

impl StructuralPartialEq for AggregateMode