Struct mz_compute_client::plan::reduce::KeyValPlan

pub struct KeyValPlan {
    pub key_plan: SafeMfpPlan,
    pub val_plan: SafeMfpPlan,
}

Plan for extracting keys and values in preparation for a reduction.

Fields

key_plan: SafeMfpPlan

Extracts the columns used as the key.

val_plan: SafeMfpPlan

Extracts the columns used to feed the aggregations.

Implementations

impl KeyValPlan

pub fn new( input_arity: usize, group_key: &[MirScalarExpr], aggregates: &[AggregateExpr], input_permutation_and_new_arity: Option<(BTreeMap<usize, usize>, usize)> ) -> Self

Create a new KeyValPlan from aggregation arguments.

pub fn key_arity(&self) -> usize

The arity of the key plan

Trait Implementations

impl Arbitrary for KeyValPlan

type Parameters = (<SafeMfpPlan as Arbitrary>::Parameters, <SafeMfpPlan as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = Map<(<SafeMfpPlan as Arbitrary>::Strategy, <SafeMfpPlan as Arbitrary>::Strategy), fn(_: (SafeMfpPlan, SafeMfpPlan)) -> KeyValPlan>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for KeyValPlan

fn clone(&self) -> KeyValPlan

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for KeyValPlan

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for KeyValPlan

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq<KeyValPlan> for KeyValPlan

fn eq(&self, other: &KeyValPlan) -> 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RustType<ProtoKeyValPlan> for KeyValPlan

fn into_proto(&self) -> ProtoKeyValPlan

Convert a Self into a Proto value.

fn from_proto(proto: ProtoKeyValPlan) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl Serialize for KeyValPlan

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

Serialize this value into the given Serde serializer.

impl Eq for KeyValPlan

impl StructuralEq for KeyValPlan

impl StructuralPartialEq for KeyValPlan