Struct CommentOnStatement 

pub struct CommentOnStatement<X: Extension = NoExt> {
    pub if_exists: bool,
    pub target: CommentTarget<X>,
    pub name: ObjectName,
    pub constraint_table: Option<ObjectName>,
    pub comment: Option<Literal>,
    pub meta: Meta,
}

The payload of a Statement::CommentOn, boxed off the statement enum to keep it within its size budget (like DropStatement).

name is the object’s (possibly qualified) name; target records its kind (and, for a procedure, its argument-type signature). comment is None for IS NULL — which clears the object’s comment — and Some for a string literal.

Fields

if_exists: bool

Whether the front-position IF EXISTS guard was present.

target: CommentTarget<X>

Object targeted by this syntax.

name: ObjectName

Name referenced by this syntax.

constraint_table: Option<ObjectName>

Relation owning a CONSTRAINT target; absent for every other target.

comment: Option<Literal>

Optional comment for this syntax.

meta: Meta

Source location and node identity.

Trait Implementations

impl<X: Clone + Extension> Clone for CommentOnStatement<X>

fn clone(&self) -> CommentOnStatement<X>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<X: Debug + Extension> Debug for CommentOnStatement<X>

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

Formats the value using the given formatter.

impl<'de, X> Deserialize<'de> for CommentOnStatement<X>

where X: Deserialize<'de> + Extension,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<X: Eq + Extension> Eq for CommentOnStatement<X>

impl<X: Hash + Extension> Hash for CommentOnStatement<X>

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<X: PartialEq + Extension> PartialEq for CommentOnStatement<X>

fn eq(&self, other: &CommentOnStatement<X>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<X> Serialize for CommentOnStatement<X>

where X: Serialize + Extension,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<X: Extension> Spanned for CommentOnStatement<X>

fn span(&self) -> Span

Return the span for this value.

impl<X: PartialEq + Extension> StructuralPartialEq for CommentOnStatement<X>