Struct ColumnQuality

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pub struct ColumnQuality {
    pub name: String,
    pub total_count: usize,
    pub null_count: usize,
    pub null_ratio: f64,
    pub unique_count: usize,
    pub unique_ratio: f64,
    pub duplicate_count: usize,
    pub duplicate_ratio: f64,
    pub outlier_count: Option<usize>,
    pub numeric_stats: Option<NumericStats>,
}

Expand description

Quality statistics for a single column

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§name: String

Column name

§total_count: usize

Total row count

§null_count: usize

Null/missing count

§null_ratio: f64

Null ratio (0-1)

§unique_count: usize

Number of unique values

§unique_ratio: f64

Unique ratio (unique/total)

§duplicate_count: usize

Number of duplicate values (non-unique occurrences)

§duplicate_ratio: f64

Duplicate ratio

§outlier_count: Option<usize>

Number of outliers (for numeric columns)

§numeric_stats: Option<NumericStats>

Basic stats for numeric columns

Implementations§

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impl ColumnQuality

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pub fn is_constant(&self) -> bool

Check if column is constant (single unique value)

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pub fn is_mostly_null(&self, threshold: f64) -> bool

Check if column is mostly null

Trait Implementations§

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impl Clone for ColumnQuality

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fn clone(&self) -> ColumnQuality

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for ColumnQuality

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for ColumnQuality

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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