Enum DropBehavior 

pub enum DropBehavior {
    Cascade,
    Restrict,
}

The dependency behaviour of a DROP or ALTER TABLE ... DROP: whether dependent objects are dropped too (CASCADE) or block the drop (RESTRICT).

Variants

Cascade

CASCADE — also drop objects that depend on the target.

Restrict

RESTRICT — refuse the drop if any object depends on the target.

Trait Implementations

impl Clone for DropBehavior

fn clone(&self) -> DropBehavior

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DropBehavior

impl Debug for DropBehavior

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DropBehavior

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for DropBehavior

impl Hash for DropBehavior

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 DropBehavior

fn eq(&self, other: &DropBehavior) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Render for DropBehavior

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

Return the render for this value.

fn operand_binding_power(&self) -> Option<BindingPower>

The binding power this node contributes when it appears as an operand, or None (the default) for a self-delimiting node — an atom, call, or constructor — that never needs parentheses.

impl Serialize for DropBehavior

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DropBehavior