Enum JoinAlgorithmHint 

pub enum JoinAlgorithmHint {
    HashJoin,
    MergeJoin,
    NestedLoop,
    IndexJoin,
    Auto,
}

Supported join algorithms for hints

Variants

HashJoin

Hash join (good for large datasets)

MergeJoin

Sort-merge join (good for pre-sorted data)

NestedLoop

Nested loop join (good for small datasets or selective filters)

IndexJoin

Index-based join

Auto

Let optimizer decide

Trait Implementations

impl Clone for JoinAlgorithmHint

fn clone(&self) -> JoinAlgorithmHint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinAlgorithmHint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JoinAlgorithmHint

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for JoinAlgorithmHint

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

Formats the value using the given formatter.

impl Hash for JoinAlgorithmHint

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 JoinAlgorithmHint

fn eq(&self, other: &JoinAlgorithmHint) -> 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 Serialize for JoinAlgorithmHint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for JoinAlgorithmHint

impl Eq for JoinAlgorithmHint

impl StructuralPartialEq for JoinAlgorithmHint