Enum WrappedTypeKind 

pub enum WrappedTypeKind {
    Nullable,
    LowCardinality,
}

The parametric wrapper keyword of a DataType::Wrapped type combinator.

Each variant is a distinct ClickHouse type combinator that shares the single-inner-type wrapper shape; recognition of each is gated on its own TypeNameSyntax flag (one behaviour = one flag), so a preset opts into each keyword independently rather than through one bundled gate. The canonical render emits ClickHouse’s mixed-case spelling (Nullable).

Variants

Nullable

Nullable(T) — the inner type extended with a NULL value.

LowCardinality

LowCardinality(T) — a dictionary-encoding wrapper over the inner type, transparent to query semantics (ClickHouse constrains which T at type resolution; the grammar accepts any single inner type).

Trait Implementations

impl Clone for WrappedTypeKind

fn clone(&self) -> WrappedTypeKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WrappedTypeKind

impl Debug for WrappedTypeKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WrappedTypeKind

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WrappedTypeKind

impl Hash for WrappedTypeKind

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 WrappedTypeKind

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WrappedTypeKind

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 WrappedTypeKind