Struct datafusion_expr::expr::Alias

pub struct Alias {
    pub expr: Box<Expr>,
    pub relation: Option<TableReference>,
    pub name: String,
}

Alias expression

Fields

expr: Box<Expr>

relation: Option<TableReference>

name: String

Implementations

impl Alias

pub fn new( expr: Expr, relation: Option<impl Into<TableReference>>, name: impl Into<String>, ) -> Self

Create an alias with an optional schema/field qualifier.

Trait Implementations

impl Clone for Alias

fn clone(&self) -> Alias

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Alias

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

Formats the value using the given formatter.

impl Hash for Alias

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Alias

fn eq(&self, other: &Alias) -> 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 Eq for Alias

impl StructuralPartialEq for Alias