Struct ForeignKeyConstraint 

pub struct ForeignKeyConstraint {
    pub name: Option<String>,
    pub local_columns: Vec<usize>,
    pub parent_table: String,
    pub parent_columns: Vec<usize>,
    pub on_delete: FkAction,
    pub on_update: FkAction,
    pub match_type: MatchType,
    pub deferrable: bool,
    pub initially_deferred: bool,
}

v7.6.1 — Storage-layer mirror of spg_sql::ast::ForeignKeyConstraint. The engine’s CREATE TABLE path translates between the two; keeping them separate preserves the no-deps boundary between spg-storage and spg-sql.

Fields

name: Option<String>

Optional user-supplied constraint name (CONSTRAINT <name> prefix). Used by ALTER TABLE DROP CONSTRAINT <name> in v7.6.8; ignored by enforcement.

local_columns: Vec<usize>

Positions of local columns in this table’s column list. Same arity as parent_columns.

parent_table: String

Referenced parent table name.

parent_columns: Vec<usize>

Positions of parent columns in the parent’s column list. Engine resolves these at CREATE TABLE time (after the parent schema is known) so enforcement paths can skip the name lookup on every row.

on_delete: FkAction

Referential action when a parent row is deleted.

on_update: FkAction

Referential action when a parent row’s referenced columns are updated.

match_type: MatchType

v7.38 (read01, T29) — MATCH SIMPLE | FULL. Defaults to Simple.

deferrable: bool

v7.39 (round 288) — [NOT] DEFERRABLE.

initially_deferred: bool

INITIALLY DEFERRED: the check runs at COMMIT rather than at the statement, unless SET CONSTRAINTS … IMMEDIATE pulls it in.

Trait Implementations

impl Clone for ForeignKeyConstraint

fn clone(&self) -> ForeignKeyConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignKeyConstraint

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

Formats the value using the given formatter.

impl Eq for ForeignKeyConstraint

impl PartialEq for ForeignKeyConstraint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ForeignKeyConstraint