Trait LoweringExt 

trait LoweringExt {
    // Required method
    fn restrict(self, join_keys: JoinKeys) -> Self;
}

Extension methods for MirRelationExpr required in the HIR ⇒ MIR lowering code.

Required Methods

fn restrict(self, join_keys: JoinKeys) -> Self

See MirRelationExpr::restrict.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl LoweringExt for MirRelationExpr

fn restrict(self, join_keys: JoinKeys) -> Self

Restrict the set of columns of an input to the sequence of JoinKeys.

Implementors