Enum HandlerKeyComparison 

pub enum HandlerKeyComparison {
    Eq,
    GreaterOrEqual,
    LessOrEqual,
    Greater,
    Less,
}

The key comparison of a HANDLER … READ <index> <op> (…) seek (HandlerReadSelector::Key) — sql_yacc.yy handler_rkey_mode. A surface tag (no meta). The set is exactly = >= <= > <; <>/!= are ER_PARSE_ERROR on mysql:8.

Variants

Eq

= — the first row whose index value equals the key.

GreaterOrEqual

>= — the first row whose index value is greater than or equal to the key.

LessOrEqual

<= — the last row whose index value is less than or equal to the key.

Greater

> — the first row whose index value is strictly greater than the key.

Less

< — the last row whose index value is strictly less than the key.

Trait Implementations

impl Clone for HandlerKeyComparison

fn clone(&self) -> HandlerKeyComparison

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HandlerKeyComparison

impl Debug for HandlerKeyComparison

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HandlerKeyComparison

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for HandlerKeyComparison

impl Hash for HandlerKeyComparison

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 HandlerKeyComparison

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for HandlerKeyComparison

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 HandlerKeyComparison