Enum SystemVariableScopeKind 

pub enum SystemVariableScopeKind {
    Global,
    Session,
    Local,
    Persist,
    PersistOnly,
}

Which system-variable scope a SystemVariableScope names.

Variants

Global

GLOBAL — the server-wide value.

Session

SESSION — the current session’s value.

Local

LOCAL — a SESSION synonym, kept distinct for round-trip fidelity.

Persist

PERSIST — set the runtime value and persist it to mysqld-auto.cnf.

PersistOnly

PERSIST_ONLY — persist without changing the runtime value.

Trait Implementations

impl Clone for SystemVariableScopeKind

fn clone(&self) -> SystemVariableScopeKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SystemVariableScopeKind

impl Debug for SystemVariableScopeKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SystemVariableScopeKind

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SystemVariableScopeKind

impl Hash for SystemVariableScopeKind

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 SystemVariableScopeKind

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

Equality operator ==.

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

Inequality operator !=.

impl Render for SystemVariableScopeKind

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

The uppercase keyword-prefix spelling (SET GLOBAL x = …).

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 SystemVariableScopeKind

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 SystemVariableScopeKind