Struct OrderExplain 

pub struct OrderExplain {
    pub source: &'static str,
    pub reverse_walk: bool,
    pub estimated_reads: u64,
    pub predicate_first_reads: u64,
}

How a page ordered by a single key is read when a source already in that order wins over reading every candidate (describe.explain).

Fields

source: &'static str

storage (record creation order), id or property.

reverse_walk: bool

The page is read from the far end of the order and reversed.

estimated_reads: u64

Estimated rows the ordered walk reads.

predicate_first_reads: u64

Rows reading every candidate would take.

Trait Implementations

impl Clone for OrderExplain

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OrderExplain

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

Formats the value using the given formatter.

impl Eq for OrderExplain

impl PartialEq for OrderExplain

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for OrderExplain