Struct SelectProjection 

pub struct SelectProjection {
    pub expr: Expr,
    pub alias: Option<&'static str>,
}

Fields

expr: Expr

alias: Option<&'static str>

Implementations

impl SelectProjection

pub fn column<E>(column: EntityColumn<E>) -> SelectProjection

where E: Entity,

pub fn expr(expr: Expr) -> SelectProjection

pub fn expr_as(expr: Expr, alias: &'static str) -> SelectProjection

Trait Implementations

impl Clone for SelectProjection

fn clone(&self) -> SelectProjection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectProjection

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

Formats the value using the given formatter.

impl<E: Entity> From<AliasedEntityColumn<E>> for SelectProjection

fn from(value: AliasedEntityColumn<E>) -> Self

Converts to this type from the input type.

impl<E> From<EntityColumn<E>> for SelectProjection

where E: Entity,

fn from(value: EntityColumn<E>) -> SelectProjection

Converts to this type from the input type.

impl From<Expr> for SelectProjection

fn from(value: Expr) -> SelectProjection

Converts to this type from the input type.

impl PartialEq for SelectProjection

fn eq(&self, other: &SelectProjection) -> 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 SelectProjections for SelectProjection

fn into_select_projections(self) -> Vec<SelectProjection>

impl StructuralPartialEq for SelectProjection