Struct Column 

pub struct Column { /* private fields */ }

A logical column declaration.

Implementations

impl Column

pub fn name(&self) -> &ColumnName

Returns the name.

pub fn domain(&self) -> &DomainId

Returns the domain.

pub const fn nullable(&self) -> bool

Returns whether NULL is permitted.

pub const fn has_default(&self) -> bool

Returns whether omission is legal because a default is installed.

pub const fn is_generated(&self) -> bool

Returns whether the provider computes this column.

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl Eq for Column

impl PartialEq for Column

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Column

impl ToRelationDatum for Column

fn to_datum(&self) -> Datum

Returns the record’s single fixed Datum::Node projection.

fn card_datum(&self) -> Datum

Returns the same ordinary-data projection for Card consumers.

fn lisp_datum(&self) -> Datum

Returns the same ordinary-data projection for Lisp codecs.