Enum SamplingMethod 

#[non_exhaustive]
pub enum SamplingMethod {
    System,
    None,
}

Sampling algorithm requested for StorageEngine::sample_init, mirroring MySQL’s enum_sampling_method.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

System

SYSTEM sampling: page/block-level, the only method MySQL supports today

None

No sampling method selected

Trait Implementations

impl Clone for SamplingMethod

fn clone(&self) -> SamplingMethod

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SamplingMethod

impl Debug for SamplingMethod

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

Formats the value using the given formatter.

impl Eq for SamplingMethod

impl PartialEq for SamplingMethod

fn eq(&self, other: &SamplingMethod) -> 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 SamplingMethod