Enum PlanCacheEligibility 

pub enum PlanCacheEligibility {
    Cacheable,
    DataDependent,
}

Whether a logical plan may be lowered once and reused from the physical-plan cache.

Variants

Cacheable

Lowering depends only on schema/catalog descriptors tracked by the cache.

DataDependent

Lowering consults mutable row identity and must run for every execution.

Implementations

impl PlanCacheEligibility

pub fn is_cacheable(self) -> bool

Whether the lowered physical tasks may be admitted to the plan cache.

Trait Implementations

impl Clone for PlanCacheEligibility

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PlanCacheEligibility

impl Debug for PlanCacheEligibility

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

Formats the value using the given formatter.

impl Eq for PlanCacheEligibility

impl PartialEq for PlanCacheEligibility

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PlanCacheEligibility