Struct FieldStats 

pub struct FieldStats {
    pub name: String,
    pub kind: FieldKind,
    pub null_rate: f32,
    pub cardinality: usize,
    pub top_k: Vec<String>,
}

Per-field statistics collected from a sample of records.

Fields

name: String

kind: FieldKind

null_rate: f32

Fraction of records where this field is absent or null.

cardinality: usize

Approximate number of distinct values (exact for samples ≤ 1 M).

top_k: Vec<String>

Up to 10 most-common values, most frequent first.

Trait Implementations

impl Clone for FieldStats

fn clone(&self) -> FieldStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldStats

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FieldStats

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for FieldStats

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

where __S: Serializer,

Serialize this value into the given Serde serializer.