Struct polars::export::arrow::io::parquet::read::statistics::Utf8Statistics

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pub struct Utf8Statistics {
    pub null_count: Option<i64>,
    pub distinct_count: Option<i64>,
    pub min_value: Option<String>,
    pub max_value: Option<String>,
}

This is supported on crate feature io_parquet only.

Expand description

Statistics of a string parquet column

Fields

null_count: Option<i64>

number of nulls

distinct_count: Option<i64>

number of dictinct values

min_value: Option<String>

Minimum

max_value: Option<String>

Maximum

Trait Implementations

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impl Clone for Utf8Statistics

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fn clone(&self) -> Utf8Statistics

Returns a copy 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 Utf8Statistics

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

Formats the value using the given formatter. Read more

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impl PartialEq<Utf8Statistics> for Utf8Statistics

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fn eq(&self, other: &Utf8Statistics) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &Utf8Statistics) -> bool

This method tests for !=.

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impl Statistics for Utf8Statistics

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fn data_type(&self) -> &DataType

returns the DataType of the statistics.

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fn as_any(&self) -> &(dyn Any + 'static)

Returns dyn Any can used to downcast to a physical type.

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fn null_count(&self) -> Option<i64>

Return the null count statistic

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impl<'_> TryFrom<&'_ BinaryStatistics> for Utf8Statistics

type Error = ArrowError

The type returned in the event of a conversion error.

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fn try_from(stats: &BinaryStatistics) -> Result<Utf8Statistics, ArrowError>

Performs the conversion.

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impl StructuralPartialEq for Utf8Statistics

Auto Trait Implementations

impl RefUnwindSafe for Utf8Statistics

impl Send for Utf8Statistics

impl Sync for Utf8Statistics

impl Unpin for Utf8Statistics

impl UnwindSafe for Utf8Statistics

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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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> Pointable for T

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const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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Struct polars::export::arrow::io::parquet::read::statistics::Utf8Statistics

Fields

Trait Implementations

impl Clone for Utf8Statistics

fn clone(&self) -> Utf8Statistics

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

impl Debug for Utf8Statistics

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

impl PartialEq<Utf8Statistics> for Utf8Statistics

fn eq(&self, other: &Utf8Statistics) -> bool

fn ne(&self, other: &Utf8Statistics) -> bool

impl Statistics for Utf8Statistics

fn data_type(&self) -> &DataType

fn as_any(&self) -> &(dyn Any + 'static)

fn null_count(&self) -> Option<i64>

impl<'_> TryFrom<&'_ BinaryStatistics> for Utf8Statistics

type Error = ArrowError

fn try_from(stats: &BinaryStatistics) -> Result<Utf8Statistics, ArrowError>

impl StructuralPartialEq for Utf8Statistics

Auto Trait Implementations

impl RefUnwindSafe for Utf8Statistics

impl Send for Utf8Statistics

impl Sync for Utf8Statistics

impl Unpin for Utf8Statistics

impl UnwindSafe for Utf8Statistics

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

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

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

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

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

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,