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", so this trait is not object safe.

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