Struct mz_compute_client::plan::top_k::BasicTopKPlan

pub struct BasicTopKPlan {
    pub group_key: Vec<usize>,
    pub order_key: Vec<ColumnOrder>,
    pub limit: Option<usize>,
    pub offset: usize,
    pub arity: usize,
    pub buckets: Vec<u64>,
}

A plan for generic TopKs that don’t fit any more specific category.

Fields

group_key: Vec<usize>

The columns that form the key for each group.

order_key: Vec<ColumnOrder>

Ordering that is used within each group.

limit: Option<usize>

Optionally, an upper bound on the per-group ordinal position of the records to produce from each group.

offset: usize

A lower bound on the per-group ordinal position of the records to produce from each group.

This can be set to zero to have no effect.

arity: usize

The number of columns in the input and output.

buckets: Vec<u64>

Bucket sizes for hierarchical stages of TopK. Should be decreasing.

Trait Implementations

impl Arbitrary for BasicTopKPlan

type Parameters = (<Vec<usize, Global> as Arbitrary>::Parameters, <Vec<ColumnOrder, Global> as Arbitrary>::Parameters, <Option<usize> as Arbitrary>::Parameters, <usize as Arbitrary>::Parameters, <usize as Arbitrary>::Parameters, <Vec<u64, Global> as Arbitrary>::Parameters)

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

type Strategy = Map<(<Vec<usize, Global> as Arbitrary>::Strategy, <Vec<ColumnOrder, Global> as Arbitrary>::Strategy, <Option<usize> as Arbitrary>::Strategy, <usize as Arbitrary>::Strategy, <usize as Arbitrary>::Strategy, <Vec<u64, Global> as Arbitrary>::Strategy), fn(_: (Vec<usize, Global>, Vec<ColumnOrder, Global>, Option<usize>, usize, usize, Vec<u64, Global>)) -> BasicTopKPlan>

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 BasicTopKPlan

fn clone(&self) -> BasicTopKPlan

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BasicTopKPlan

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BasicTopKPlan

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

Deserialize this value from the given Serde deserializer.

impl PartialEq<BasicTopKPlan> for BasicTopKPlan

fn eq(&self, other: &BasicTopKPlan) -> 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<ProtoBasicTopKPlan> for BasicTopKPlan

fn into_proto(&self) -> ProtoBasicTopKPlan

Convert a Self into a Proto value.

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

Consume and convert a Proto back into a Self value.

impl Serialize for BasicTopKPlan

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 BasicTopKPlan

impl StructuralEq for BasicTopKPlan

impl StructuralPartialEq for BasicTopKPlan