Struct CanonicalRowHashSet 

pub struct CanonicalRowHashSet { /* private fields */ }

Collision-safe in-memory set for positional SQL rows.

Probes consume borrowed values and stream their canonical representation directly into the hash function. Only the first distinct row is copied into the contiguous key arena; repeated build rows and every lookup avoid both a positional Vec<Value> allocation and value cloning. Hash matches always verify the complete SQL Value equality domain.

Implementations

impl CanonicalRowHashSet

pub fn new() -> Self

pub fn insert_borrowed(&mut self, values: &[&Value]) -> ExecResult<bool>

Insert a positional key assembled from borrowed values. Returns true only when this is the first SQL-equal key.

pub fn insert_values(&mut self, values: &[Value]) -> ExecResult<bool>

Insert an already positional key without an intermediate borrowed-row carrier. Values are copied only for a previously unseen key.

pub fn contains_borrowed(&self, values: &[&Value]) -> ExecResult<bool>

Probe with a composite row of borrowed values without allocating or copying the key.

pub fn contains_values(&self, values: &[Value]) -> ExecResult<bool>

Probe with an already positional value slice.

Trait Implementations

impl Default for CanonicalRowHashSet

fn default() -> Self

Returns the “default value” for a type.