Enum TableConstraint

pub enum TableConstraint {
    Unique {
        name: Option<Ident>,
        columns: Vec<Ident>,
        is_primary: bool,
    },
    ForeignKey {
        name: Option<Ident>,
        columns: Vec<Ident>,
        foreign_table: ObjectName,
        referred_columns: Vec<Ident>,
        on_delete: Option<ReferentialAction>,
        on_update: Option<ReferentialAction>,
    },
    Check {
        name: Option<Ident>,
        expr: Box<Expr>,
    },
}

A table-level constraint, specified in a CREATE TABLE or an ALTER TABLE ADD <constraint> statement.

Variants

Unique

[ CONSTRAINT <name> ] { PRIMARY KEY | UNIQUE } (<columns>)

Fields

name: Option<Ident>

columns: Vec<Ident>

is_primary: bool

Whether this is a PRIMARY KEY or just a UNIQUE constraint

ForeignKey

A referential integrity constraint ([ CONSTRAINT <name> ] FOREIGN KEY (<columns>) REFERENCES <foreign_table> (<referred_columns>) { [ON DELETE <referential_action>] [ON UPDATE <referential_action>] | [ON UPDATE <referential_action>] [ON DELETE <referential_action>] }).

Fields

name: Option<Ident>

columns: Vec<Ident>

foreign_table: ObjectName

referred_columns: Vec<Ident>

on_delete: Option<ReferentialAction>

on_update: Option<ReferentialAction>

Check

[ CONSTRAINT <name> ] CHECK (<expr>)

Fields

name: Option<Ident>

expr: Box<Expr>

Trait Implementations

impl Clone for TableConstraint

fn clone(&self) -> TableConstraint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TableConstraint

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

Formats the value using the given formatter.

impl Display for TableConstraint

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

Formats the value using the given formatter.

impl Hash for TableConstraint

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 PartialEq for TableConstraint

fn eq(&self, other: &TableConstraint) -> 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 Eq for TableConstraint

impl StructuralPartialEq for TableConstraint