Enum sql_schema_describer::ColumnArity

pub enum ColumnArity {
    Required,
    Nullable,
    List,
}

A column’s arity.

Variants

Required

Required column.

Nullable

Nullable column.

List

List type column.

Implementations

impl ColumnArity

pub fn is_list(&self) -> bool

The arity is ColumnArity::List.

pub fn is_nullable(&self) -> bool

The arity is ColumnArity::Nullable.

pub fn is_required(&self) -> bool

The arity is ColumnArity::Required.

Trait Implementations

impl Clone for ColumnArity

fn clone(&self) -> ColumnArity

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnArity

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ColumnArity

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ColumnArity

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for ColumnArity

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ColumnArity

impl StructuralPartialEq for ColumnArity