Enum SystemVariableScope 

pub enum SystemVariableScope {
    Implicit,
    Keyword(SystemVariableScopeKind),
    AtAt,
    AtAtScoped(SystemVariableScopeKind),
}

The scope qualifier of a MySQL system-variable assignment, capturing both which scope and how it was spelled — a keyword prefix (GLOBAL x) or the @@ sigil (@@global.x). Modelled as one enum so the mutually-exclusive keyword/@@ spellings cannot both be present.

Variants

Implicit

No scope prefix — a bare SET x = ... (server-implicit session scope).

Keyword(SystemVariableScopeKind)

A keyword prefix — SET GLOBAL x = ... / SESSION / LOCAL / PERSIST / PERSIST_ONLY.

AtAt

The @@ sigil with no explicit scope — SET @@x = ....

AtAtScoped(SystemVariableScopeKind)

The @@ sigil with an explicit scope — SET @@global.x = ... / @@session. / @@local. / @@persist. / @@persist_only..

Trait Implementations

impl Clone for SystemVariableScope

fn clone(&self) -> SystemVariableScope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SystemVariableScope

impl Debug for SystemVariableScope

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SystemVariableScope

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SystemVariableScope

impl Hash for SystemVariableScope

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 SystemVariableScope

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for SystemVariableScope

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 SystemVariableScope