Trait OptimizerConfig 

pub trait OptimizerConfig {
    // Required methods
    fn query_execution_start_time(&self) -> Option<DateTime<Utc>>;
    fn alias_generator(&self) -> &Arc<AliasGenerator>;
    fn options(&self) -> Arc<ConfigOptions>;

    // Provided method
    fn function_registry(&self) -> Option<&dyn FunctionRegistry> { ... }
}

Options to control the DataFusion Optimizer.

Required Methods

fn query_execution_start_time(&self) -> Option<DateTime<Utc>>

Return the time at which the query execution started. This time is used as the value for now(). If None, time-dependent functions like now() will not be simplified during optimization.

fn alias_generator(&self) -> &Arc<AliasGenerator>

Return alias generator used to generate unique aliases for subqueries

fn options(&self) -> Arc<ConfigOptions>

Provided Methods

fn function_registry(&self) -> Option<&dyn FunctionRegistry>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl OptimizerConfig for OptimizerContext