Enum datafusion_expr::logical_plan::Partitioning

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pub enum Partitioning {
    RoundRobinBatch(usize),
    Hash(Vec<Expr>, usize),
    DistributeBy(Vec<Expr>),
}

Expand description

Logical partitioning schemes supported by the repartition operator.

Variants

`RoundRobinBatch(usize)`

Allocate batches using a round-robin algorithm and the specified number of partitions

`Hash(Vec<Expr>, usize)`

Allocate rows based on a hash of one of more expressions and the specified number of partitions.

`DistributeBy(Vec<Expr>)`

The DISTRIBUTE BY clause is used to repartition the data based on the input expressions

Trait Implementations

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impl Clone for Partitioning

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fn clone(&self) -> Partitioning

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl Debug for Partitioning

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl !RefUnwindSafe for Partitioning

impl Send for Partitioning

impl Sync for Partitioning

impl Unpin for Partitioning

impl !UnwindSafe for Partitioning

Blanket Implementations

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impl<T> Any for Twhere
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 Twhere
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 Twhere
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 Twhere
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> ToOwned for Twhere
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)

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

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impl<T, U> TryFrom for Twhere
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 Twhere
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.

Enum datafusion_expr::logical_plan::Partitioning

Variants

`RoundRobinBatch(usize)`

`Hash(Vec<Expr>, usize)`

`DistributeBy(Vec<Expr>)`

Trait Implementations

impl Clone for Partitioning

fn clone(&self) -> Partitioning

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

impl Debug for Partitioning

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

Auto Trait Implementations

impl !RefUnwindSafe for Partitioning

impl Send for Partitioning

impl Sync for Partitioning

impl Unpin for Partitioning

impl !UnwindSafe for Partitioning

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere
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 Twhere
U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

Enum datafusion_expr::logical_plan::Partitioning

Variants

RoundRobinBatch(usize)

Hash(Vec<Expr>, usize)

DistributeBy(Vec<Expr>)

Trait Implementations

impl Clone for Partitioning

fn clone(&self) -> Partitioning

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

impl Debug for Partitioning

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

Auto Trait Implementations

impl !RefUnwindSafe for Partitioning

impl Send for Partitioning

impl Sync for Partitioning

impl Unpin for Partitioning

impl !UnwindSafe for Partitioning

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere 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 Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

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

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

type Error = Infallible

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

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

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

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

`RoundRobinBatch(usize)`

`Hash(Vec<Expr>, usize)`

`DistributeBy(Vec<Expr>)`

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

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

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

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

impl<T> ToOwned for Twhere
T: Clone,

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

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