Enum sqlparser::ast::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>,
    },
    Index {
        display_as_key: bool,
        name: Option<Ident>,
        index_type: Option<IndexType>,
        columns: Vec<Ident>,
    },
}

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

Variants

Unique

Fields

name: Option<Ident>

columns: Vec<Ident>

is_primary: bool

Whether this is a PRIMARY KEY or just a UNIQUE constraint

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

ForeignKey

Fields

name: Option<Ident>

columns: Vec<Ident>

foreign_table: ObjectName

referred_columns: Vec<Ident>

on_delete: Option<ReferentialAction>

on_update: Option<ReferentialAction>

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>] }).

Check

Fields

name: Option<Ident>

expr: Box<Expr>

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

Index

Fields

display_as_key: bool

Whether this index starts with KEY (true) or INDEX (false), to maintain the same syntax.

name: Option<Ident>

Index name.

index_type: Option<IndexType>

Optional index type.

columns: Vec<Ident>

Referred column identifier list.

MySQLs index definition for index creation. Not present on ANSI so, for now, the usage is restricted to MySQL, as no other dialects that support this syntax were found.

{INDEX | KEY} [index_name] [index_type] (key_part,...) [index_option]...

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<TableConstraint> for TableConstraint

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

impl StructuralEq for TableConstraint

impl StructuralPartialEq for TableConstraint