Struct AnalyzeJoin 

pub struct AnalyzeJoin {
    pub exists: String,
    pub flip: bool,
    pub reason: &'static str,
}

One flippable EXISTS join’s routing decision.

Fields

exists: String

The child (subquery) table the EXISTS correlates to.

flip: bool

true ⇒ child-driven (flipped: hydrate from the distinct child keys); false ⇒ parent-driven (scan parents).

reason: &'static str

Human label for flip ("child-driven" / "parent-driven").

Trait Implementations

impl Clone for AnalyzeJoin

fn clone(&self) -> AnalyzeJoin

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnalyzeJoin

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

Formats the value using the given formatter.

impl Serialize for AnalyzeJoin

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

where __S: Serializer,

Serialize this value into the given Serde serializer.