Struct OptimizedQuery 

pub struct OptimizedQuery {
    pub statement: Statement,
    pub original_cost: Cost,
    pub optimized_cost: Cost,
}

An optimized query with cost information.

Fields

statement: Statement

The optimized statement.

original_cost: Cost

Original cost estimate.

optimized_cost: Cost

Optimized cost estimate.

Implementations

impl OptimizedQuery

pub fn improvement_ratio(&self) -> f64

Get the improvement ratio.

pub fn speedup_factor(&self) -> f64

Get the speedup factor.

Trait Implementations

impl Clone for OptimizedQuery

fn clone(&self) -> OptimizedQuery

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptimizedQuery

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OptimizedQuery

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for OptimizedQuery

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.