Enum RemovalRule 

pub enum RemovalRule {
    ForeignKey {
        columns: Vec<String>,
        parent: String,
        parent_columns: Vec<String>,
    },
    Check {
        constraint: String,
    },
    DeletedCircle {
        entry: Slot,
    },
    OtherAudience,
    Unique {
        terms: Vec<String>,
        partial: Option<String>,
    },
}

A rule responsible for a removed row.

Variants

ForeignKey

A reference to an absent, stale or removed parent.

Fields

columns: Vec<String>

The referencing columns, in constraint order.

parent: String

The referenced table.

parent_columns: Vec<String>

The referenced columns, in constraint order.

Check

A failed CHECK.

Fields

constraint: String

The constraint’s name.

DeletedCircle

The row belongs to a deleted circle.

Fields

entry: Slot

The kept entry responsible for the deletion.

OtherAudience

The same key is shown from another audience.

Unique

A competing row won the unique values.

Fields

terms: Vec<String>

Column names or expression text, in constraint order.

partial: Option<String>

The WHERE expression of a partial constraint.

Trait Implementations

impl Clone for RemovalRule

fn clone(&self) -> RemovalRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RemovalRule

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

Formats the value using the given formatter.

impl PartialEq for RemovalRule

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

impl StructuralPartialEq for RemovalRule