Enum ColumnRelationAction 

pub enum ColumnRelationAction {
    Restrict,
    Cascade,
    SetNull,
    SetDefault,
    NoAction,
}

The action that should be performed when a referenced row is deleted or updated.

Variants

Restrict

The default action. The database will not allow the deletion or update of the referenced row.

Cascade

The database will delete or update the row from the table if that row is deleted or updated from the parent table.

SetNull

The database will set the foreign key column or columns in the referencing row to NULL if that row is deleted or updated from the parent table.

SetDefault

The database will set the foreign key column or columns in the referencing row to the default value if that row is deleted or updated from the parent table.

NoAction

Just ignore and do nothing

Trait Implementations

impl Clone for ColumnRelationAction

fn clone(&self) -> ColumnRelationAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnRelationAction

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

Formats the value using the given formatter.

impl IntoSqlite for ColumnRelationAction

fn into_sqlite(&self) -> String

impl PartialEq for ColumnRelationAction

fn eq(&self, other: &ColumnRelationAction) -> 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 Copy for ColumnRelationAction

impl Eq for ColumnRelationAction

impl StructuralPartialEq for ColumnRelationAction