Struct PlanProperties

pub struct PlanProperties {
    pub eq_properties: EquivalenceProperties,
    pub partitioning: Partitioning,
    pub emission_type: EmissionType,
    pub boundedness: Boundedness,
    /* private fields */
}

Stores certain, often expensive to compute, plan properties used in query optimization.

These properties are stored a single structure to permit this information to be computed once and then those cached results used multiple times without recomputation (aka a cache)

Fields

eq_properties: EquivalenceProperties

See ExecutionPlanProperties::equivalence_properties

partitioning: Partitioning

See ExecutionPlanProperties::output_partitioning

emission_type: EmissionType

See ExecutionPlanProperties::pipeline_behavior

boundedness: Boundedness

See ExecutionPlanProperties::boundedness

Implementations

impl PlanProperties

pub fn new( eq_properties: EquivalenceProperties, partitioning: Partitioning, emission_type: EmissionType, boundedness: Boundedness, ) -> Self

Construct a new PlanPropertiesCache from the

pub fn with_partitioning(self, partitioning: Partitioning) -> Self

Overwrite output partitioning with its new value.

pub fn with_eq_properties(self, eq_properties: EquivalenceProperties) -> Self

Overwrite equivalence properties with its new value.

pub fn with_boundedness(self, boundedness: Boundedness) -> Self

Overwrite boundedness with its new value.

pub fn with_emission_type(self, emission_type: EmissionType) -> Self

Overwrite emission type with its new value.

pub fn with_constraints(self, constraints: Constraints) -> Self

Overwrite constraints with its new value.

pub fn equivalence_properties(&self) -> &EquivalenceProperties

pub fn output_partitioning(&self) -> &Partitioning

pub fn output_ordering(&self) -> Option<&LexOrdering>

Trait Implementations

impl Clone for PlanProperties

fn clone(&self) -> PlanProperties

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PlanProperties

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

Formats the value using the given formatter.