Struct DppAdvice 

#[non_exhaustive]
pub struct DppAdvice {
    pub join_key: String,
    pub build_node_id: String,
    pub probe_node_id: String,
    pub build_rows: u64,
    pub max_keys: usize,
}

Advice produced by the DPP rule: the join keys and the build-side side of the join (the small side whose distinct values feed the filter).

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

join_key: String

Join key shared by both sides.

build_node_id: String

Build-side node id (the small side of the join).

probe_node_id: String

Probe-side node id (the side that gets the filter).

build_rows: u64

Observed build-side row count.

max_keys: usize

Cap on distinct keys captured in the filter.

Implementations

impl DppAdvice

pub fn is_eligible(&self) -> bool

True when the join is DPP-eligible.

Trait Implementations

impl Clone for DppAdvice

fn clone(&self) -> DppAdvice

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DppAdvice

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

Formats the value using the given formatter.

impl Eq for DppAdvice

impl PartialEq for DppAdvice

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DppAdvice