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UnhandledPredicateHook

datafusion_pruning

Trait UnhandledPredicateHook 

Source 
pub trait UnhandledPredicateHook {
    // Required method
    fn handle(&self, expr: &Arc<dyn PhysicalExpr>) -> Arc<dyn PhysicalExpr> ⓘ;
}
Expand description

Rewrites predicates that PredicateRewriter can not handle, e.g. certain complex expressions or predicates that reference columns that are not in the schema.

Required Methods§

Source

fn handle(&self, expr: &Arc<dyn PhysicalExpr>) -> Arc<dyn PhysicalExpr> ⓘ

Called when a predicate can not be rewritten in terms of statistics or references a column that is not in the schema.

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§