Struct KnnExpr 

pub struct KnnExpr { /* private fields */ }

K-nearest-neighbour operator <field> <|k[,opt]|> <vector>. With no option it uses the field’s vector index (<|k|>); opt carries either a brute-force distance metric (<|k,EUCLIDEAN|>) or an HNSW search size (<|k,40|>). Usually built via the VectorSearch builder.

Implementations

impl KnnExpr

pub fn and(self, other: impl DynExpr + 'static) -> AndExpr

pub fn or(self, other: impl DynExpr + 'static) -> OrExpr

Trait Implementations

impl Debug for KnnExpr

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

Formats the value using the given formatter.

impl DynExpr for KnnExpr

fn render_dyn(&self, buf: &mut String)

Append this expression’s SurrealQL to buf with all values inlined.

fn render_dyn_params( &self, buf: &mut String, params: &mut BTreeMap<String, Value>, )

Render with $param placeholders, collecting values into params. Default falls back to inline rendering; Literal nodes override this to emit $pN placeholders and collect their value.