Struct AttrStats 

pub struct AttrStats {
    pub count: usize,
    pub distinct_values: usize,
    pub distinct_entities: usize,
}

Per-attribute statistics driving planner selectivity estimates.

Fields

count: usize

Datoms carrying this attribute in the view.

distinct_values: usize

Distinct values for this attribute.

distinct_entities: usize

Distinct entities carrying this attribute.

Trait Implementations

impl Clone for AttrStats

fn clone(&self) -> AttrStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AttrStats

impl Debug for AttrStats

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

Formats the value using the given formatter.

impl Default for AttrStats

fn default() -> AttrStats

Returns the “default value” for a type.

impl Eq for AttrStats

impl PartialEq for AttrStats

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AttrStats