Enum ColumnOption 

pub enum ColumnOption {
    Null,
    NotNull,
    DefaultValue(Expr),
    DefaultValueInternal {
        persisted: Box<[u8]>,
        expr: Option<Expr>,
    },
    Unique {
        is_primary: bool,
    },
    ForeignKey {
        foreign_table: ObjectName,
        referred_columns: Vec<Ident>,
        on_delete: Option<ReferentialAction>,
        on_update: Option<ReferentialAction>,
    },
    Check(Expr),
    DialectSpecific(Vec<Token>),
    GeneratedColumns(Expr),
}

ColumnOptions are modifiers that follow a column definition in a CREATE TABLE statement.

Variants

Null

NULL

NotNull

NOT NULL

DefaultValue(Expr)

DEFAULT <restricted-expr>

DefaultValueInternal

Default value from previous bound DefaultColumnDesc. Used internally for schema change and should not be specified by users.

Fields

persisted: Box<[u8]>

Protobuf encoded DefaultColumnDesc.

expr: Option<Expr>

Optional AST for unparsing. If None, the default value will be shown as DEFAULT INTERNAL which is for demonstrating and should not be specified by users.

Unique

{ PRIMARY KEY | UNIQUE }

Fields

is_primary: bool

ForeignKey

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

Fields

foreign_table: ObjectName

referred_columns: Vec<Ident>

on_delete: Option<ReferentialAction>

on_update: Option<ReferentialAction>

Check(Expr)

CHECK (<expr>)

DialectSpecific(Vec<Token>)

Dialect-specific options, such as:

• MySQL’s AUTO_INCREMENT or SQLite’s AUTOINCREMENT
• …

GeneratedColumns(Expr)

AS ( <generation_expr> )`

Trait Implementations

impl Clone for ColumnOption

fn clone(&self) -> ColumnOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnOption

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

Formats the value using the given formatter.

impl Display for ColumnOption

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

Formats the value using the given formatter.

impl Hash for ColumnOption

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 ColumnOption

fn eq(&self, other: &ColumnOption) -> 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 ColumnOption

impl StructuralPartialEq for ColumnOption