Struct Optimizer 

pub struct Optimizer { /* private fields */ }

The plan optimizer: runs a set of rules iteratively until convergence.

Implementations

impl Optimizer

pub fn default_rules() -> Self

Create an optimizer with the default set of rules.

pub fn with_rules(rules: Vec<Box<dyn OptimizationRule>>) -> Self

Create an optimizer with a custom set of rules.

pub fn optimize(&self, plan: LogicalPlan) -> (LogicalPlan, usize)

Optimize a logical plan by applying rules iteratively.

Returns the optimized plan and the number of passes performed.

Trait Implementations

impl Debug for Optimizer

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

Formats the value using the given formatter.