pub fn map_one(self, scalar: MirScalarExpr) -> Self {
        MirRelationExpr::Map {
            input: Box::new(self),
            scalars: vec![scalar],
        }
    }
/// Append to each row a single `scalar`.
Append to each row a single `scalar`.
Append to each row a single ` scalar ` .
pub fn map_one(self, scalar: MirScalarExpr) -> Self {
        MirRelationExpr::Map {
            input: Box::new(self),
            scalars: vec![scalar],
        }
    }
pub fn map_one ( self , scalar : MirScalarExpr ) -> Self { MirRelationExpr :: Map { input : Box :: new ( self ) , scalars : vec ! [ scalar ] , } }
Append to each row a single `scalar`.
Append to each row a single ` scalar ` .
self
scalar
MirScalarExpr
self
scalar
MirScalarExpr