Enum IndexLock 

pub enum IndexLock {
    Default,
    None,
    Shared,
    Exclusive,
}

The online-DDL LOCK value (alter_lock_option_value). DEFAULT is a keyword; the rest are matched case-insensitively as identifiers, and an unknown value is a binding reject (ER_UNKNOWN_ALTER_LOCK 1801), not a syntax error — so only these four bind.

Variants

Default

DEFAULT — the server’s default concurrency.

None

NONE — permit concurrent reads and writes.

Shared

SHARED — permit concurrent reads only.

Exclusive

EXCLUSIVE — permit no concurrent access.

Trait Implementations

impl Clone for IndexLock

fn clone(&self) -> IndexLock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IndexLock

impl Debug for IndexLock

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for IndexLock

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for IndexLock

impl Hash for IndexLock

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 IndexLock

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for IndexLock

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 IndexLock