Struct ForeignKey 

pub struct ForeignKey {
    pub columns: ConstraintColumns,
    pub parent: String,
    pub parent_columns: ConstraintColumns,
}

A foreign key’s stable identity, independent of SQLite’s positional id (Appendix B.5).

Fields

columns: ConstraintColumns

Referencing columns in declaration order.

parent: String

Referenced table.

parent_columns: ConstraintColumns

Referenced columns, paired in order with columns.

Implementations

impl ForeignKey

pub fn new( columns: impl Into<ConstraintColumns>, parent: impl Into<String>, parent_columns: impl Into<ConstraintColumns>, ) -> Self

Name both sides of a declared reference, including implicit primary keys.

Trait Implementations

impl Clone for ForeignKey

fn clone(&self) -> ForeignKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignKey

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

Formats the value using the given formatter.

impl Hash for ForeignKey

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 Ord for ForeignKey

fn cmp(&self, other: &ForeignKey) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ForeignKey

fn eq(&self, other: &ForeignKey) -> 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 PartialOrd for ForeignKey

fn partial_cmp(&self, other: &ForeignKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for ForeignKey

impl StructuralPartialEq for ForeignKey