Enum RelationTotalState 

pub enum RelationTotalState {
    Exact(u64),
    AtLeast(u64),
    Unknown,
}

Typed cardinality knowledge for one bounded relation page.

Variants

Exact(u64)

The traversal is exhausted and this total is complete.

AtLeast(u64)

At least this many rows have been emitted or proved pending.

Unknown

No useful cardinality lower bound is available yet.

Trait Implementations

impl Clone for RelationTotalState

fn clone(&self) -> RelationTotalState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RelationTotalState

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

Formats the value using the given formatter.

impl PartialEq for RelationTotalState

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RelationTotalState

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 RelationTotalState

impl StructuralPartialEq for RelationTotalState