Struct Projection 

pub struct Projection {
    pub expr: Expr,
    pub alias: SmolStr,
}

A single output column of a PROJECT or WITH operator. Spec §12.1.

Fields

expr: Expr

Expression to evaluate.

alias: SmolStr

Column alias (always explicit at plan level — the lowering pass synthesises aliases for bare variable references).

Trait Implementations

impl Clone for Projection

fn clone(&self) -> Projection

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Projection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Projection

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl PartialEq for Projection

fn eq(&self, other: &Projection) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Projection

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl Eq for Projection

impl StructuralPartialEq for Projection