Enum ColumnRef

#[non_exhaustive]
pub enum ColumnRef {
    Column(ColumnName),
    Asterisk(Option<TableName>),
}

Column references.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Column(ColumnName)

A column name, potentially qualified as (database.)(schema.)(table.)column.

Asterisk(Option<TableName>)

An * expression, potentially qualified as (database.)(schema.)(table.)*.

Trait Implementations

impl Clone for ColumnRef

fn clone(&self) -> ColumnRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnRef

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

Formats the value using the given formatter.

impl<T> From<(T, Asterisk)> for ColumnRef

where T: IntoIden,

fn from(value: (T, Asterisk)) -> Self

Converts to this type from the input type.

impl From<Asterisk> for ColumnRef

fn from(_: Asterisk) -> Self

Converts to this type from the input type.

impl From<ColumnRef> for Expr

fn from(col: ColumnRef) -> Self

Converts to this type from the input type.

impl<T> From<T> for ColumnRef

where T: Into<ColumnName>,

fn from(value: T) -> Self

Converts to this type from the input type.

impl PartialEq for ColumnRef

fn eq(&self, other: &ColumnRef) -> 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 StructuralPartialEq for ColumnRef