Struct polars_io :: predicates :: ColumnStats Copy item path

impl ColumnStats

pub fn new( field: Field, null_count: Option<Series>, min_value: Option<Series>, max_value: Option<Series> ) -> Self

Constructs a new ColumnStats.

pub fn from_field(field: Field) -> Self

Constructs a new ColumnStats with only the Field information and no statistics.

pub fn from_column_literal(s: Series) -> Self

Constructs a new ColumnStats from a single-value Series.

pub fn dtype(&self) -> &DataType

Returns the DataType of the column.

pub fn get_null_count_state(&self) -> Option<&Series>

Returns the null count of each row group of the column.

pub fn get_min_state(&self) -> Option<&Series>

Returns the minimum value of each row group of the column.

pub fn get_max_state(&self) -> Option<&Series>

Returns the maximum value of each row group of the column.

pub fn null_count(&self) -> Option<usize>

Returns the null count of the column.

pub fn to_min_max(&self) -> Option<Series>

Returns the minimum and maximum values of the column as a single Series.

pub fn to_min(&self) -> Option<&Series>

Returns the minimum value of the column as a single-value Series.

Returns None if no maximum value is available.

pub fn to_max(&self) -> Option<&Series>

Returns the maximum value of the column as a single-value Series.

Returns None if no maximum value is available.

Trait Implementations§

impl Debug for ColumnStats

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

Formats the value using the given formatter. Read more

impl<'de> Deserialize<'de> for ColumnStats

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl Serialize for ColumnStats

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more

Auto Trait Implementations§

impl !UnwindSafe for ColumnStats

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

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

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

fn in_current_span(self) -> Instrumented<Self>

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

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> IntoEither for T

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

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