Enum QueryFieldRole 

pub enum QueryFieldRole {
    Predicate,
    Projection,
    GroupBy,
    Having,
    OrderBy,
    AggregateTarget,
}

Compact semantic role of one rejected query-field reference.

Variants

Predicate

Projection

GroupBy

Having

OrderBy

AggregateTarget

Implementations

impl QueryFieldRole

pub const fn raw(self) -> u8

Return the stable public wire identity.

pub const fn known(raw: u8) -> Option<Self>

Recover one known role from its public wire identity.

Trait Implementations

impl Clone for QueryFieldRole

fn clone(&self) -> QueryFieldRole

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QueryFieldRole

impl Debug for QueryFieldRole

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

Formats the value using the given formatter.

impl Eq for QueryFieldRole

impl Hash for QueryFieldRole

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 QueryFieldRole

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for QueryFieldRole