Enum CommentTarget 

#[non_exhaustive]
pub enum CommentTarget<X: Extension = NoExt> {
    Table,
    Column,
    Database,
    View,
    MaterializedView,
    Index,
    Constraint,
    Procedure {
        arg_types: Option<ThinVec<DataType<X>>>,
    },
}

The object kind a Statement::CommentOn targets.

The object’s name rides Statement::CommentOn::name. Targets with additional grammar carry that data in their variant.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Table

COMMENT ON TABLE <name>.

Column

COMMENT ON COLUMN <name>.

Database

COMMENT ON DATABASE <name>.

View

COMMENT ON VIEW <name>.

MaterializedView

COMMENT ON MATERIALIZED VIEW <name>.

Index

COMMENT ON INDEX <name>.

Constraint

COMMENT ON CONSTRAINT <name> ON <table>.

Procedure

COMMENT ON PROCEDURE <name>[(<arg types>)]. The argument-type list disambiguates overloaded procedures; None is an unspecified signature (bare PROCEDURE foo), Some a written list — possibly empty (foo()) — mirroring RoutineSignature::arg_types.

Fields

arg_types: Option<ThinVec<DataType<X>>>

Optional arg types for this syntax.

Trait Implementations

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

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

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

Formats the value using the given formatter.

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

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

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

Equality operator ==.

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

Inequality operator !=.

impl<X> Serialize for CommentTarget<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: PartialEq + Extension> StructuralPartialEq for CommentTarget<X>