Enum QualityIssue 

pub enum QualityIssue {
    HighNullRatio {
        column: String,
        null_ratio: f64,
        threshold: f64,
    },
    HighDuplicateRatio {
        column: String,
        duplicate_ratio: f64,
        threshold: f64,
    },
    LowCardinality {
        column: String,
        unique_count: usize,
        total_count: usize,
    },
    OutliersDetected {
        column: String,
        outlier_count: usize,
        outlier_ratio: f64,
    },
    DuplicateRows {
        duplicate_count: usize,
        duplicate_ratio: f64,
    },
    ConstantColumn {
        column: String,
        value: String,
    },
    EmptySchema,
    EmptyDataset,
}

Types of data quality issues

Variants

HighNullRatio

Column has high percentage of null/missing values

Fields

column: String

Column name

null_ratio: f64

Actual null ratio

threshold: f64

Configured threshold

HighDuplicateRatio

Column has high percentage of duplicate values

Fields

column: String

Column name

duplicate_ratio: f64

Actual duplicate ratio

threshold: f64

Configured threshold

LowCardinality

Column has very low cardinality (potential constant)

Fields

column: String

Column name

unique_count: usize

Number of unique values

total_count: usize

Total row count

OutliersDetected

Column has potential outliers (IQR method)

Fields

column: String

Column name

outlier_count: usize

Number of outliers

outlier_ratio: f64

Ratio of outliers

DuplicateRows

Dataset has duplicate rows

Fields

duplicate_count: usize

Number of duplicate rows

duplicate_ratio: f64

Ratio of duplicate rows

ConstantColumn

Column has constant value (zero variance)

Fields

column: String

Column name

value: String

The constant value

EmptySchema

Schema has no columns

EmptyDataset

Dataset is empty

Implementations

impl QualityIssue

pub fn severity(&self) -> u8

Get severity level (1-5, higher is worse)

pub fn column(&self) -> Option<&str>

Get column name if applicable

Trait Implementations

impl Clone for QualityIssue

fn clone(&self) -> QualityIssue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QualityIssue

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

Formats the value using the given formatter.

impl PartialEq for QualityIssue

fn eq(&self, other: &QualityIssue) -> 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 StructuralPartialEq for QualityIssue