Struct ColumnProfile 

pub struct ColumnProfile {
    pub name: String,
    pub data_type: String,
    pub null_count: u64,
    pub non_null_count: u64,
    pub distinct_count: Option<usize>,
    pub min: Option<f64>,
    pub max: Option<f64>,
}

Per-column summary produced while profiling a dataset.

Fields

name: String

Column name as declared in the Arrow schema.

data_type: String

Arrow data type rendered as a stable string.

null_count: u64

Number of null values observed in the column.

non_null_count: u64

Number of non-null values observed in the column.

distinct_count: Option<usize>

Count of distinct canonical values seen in the column, when exact distinct is enabled.

min: Option<f64>

Minimum numeric value, when the column parses as a number.

max: Option<f64>

Maximum numeric value, when the column parses as a number.

Trait Implementations

impl Debug for ColumnProfile

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

Formats the value using the given formatter.

impl Serialize for ColumnProfile

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

where __S: Serializer,

Serialize this value into the given Serde serializer.