Struct AccessPath 

pub struct AccessPath {
    pub table: String,
    pub kind: AccessPathKind,
    pub index: Option<String>,
    pub estimated_cost: f64,
    pub estimated_rows: f64,
    pub time_travel: Option<TimeTravelClause>,
    pub probe: Option<AccessPathProbe>,
}

A concrete access path chosen by the planner.

Fields

table: String

Table being accessed.

kind: AccessPathKind

Kind of scan.

index: Option<String>

Index used (None for full table scan / rowid lookup / rowid range).

estimated_cost: f64

Estimated cost in page reads.

estimated_rows: f64

Estimated rows returned.

time_travel: Option<TimeTravelClause>

Time-travel clause (SQL:2011 temporal query) — FOR SYSTEM_TIME AS OF ....

probe: Option<AccessPathProbe>

Probe expressions extracted during path selection — avoids downstream re-extraction from the WHERE clause.

Trait Implementations

impl Clone for AccessPath

fn clone(&self) -> AccessPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccessPath

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

Formats the value using the given formatter.

impl From<&AccessPath> for AccessPathSummary

fn from(ap: &AccessPath) -> Self

Converts to this type from the input type.

impl PartialEq for AccessPath

fn eq(&self, other: &AccessPath) -> 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 StructuralPartialEq for AccessPath