Enum OptimizerHintStyle 

pub enum OptimizerHintStyle {
    SingleLine {
        prefix: String,
    },
    MultiLine,
}

The commentary style of an optimizer hint

Variants

SingleLine

A hint corresponding to a single line comment, e.g. --+ LEADING(v.e v.d t)

Fields

prefix: String

the comment prefix, e.g. --

MultiLine

A hint corresponding to a multi line comment, e.g. /*+ LEADING(v.e v.d t) */

Trait Implementations

impl Clone for OptimizerHintStyle

fn clone(&self) -> OptimizerHintStyle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptimizerHintStyle

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

Formats the value using the given formatter.

impl Hash for OptimizerHintStyle

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 Ord for OptimizerHintStyle

fn cmp(&self, other: &OptimizerHintStyle) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for OptimizerHintStyle

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for OptimizerHintStyle

fn partial_cmp(&self, other: &OptimizerHintStyle) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Visit for OptimizerHintStyle

fn visit<V>(&self, visitor: &mut V) -> ControlFlow<<V as Visitor>::Break>

where V: Visitor,

Visit this node with the provided Visitor.

impl VisitMut for OptimizerHintStyle

fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>

where V: VisitorMut,

Mutably visit this node with the provided VisitorMut.

impl Eq for OptimizerHintStyle

impl StructuralPartialEq for OptimizerHintStyle