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StatisticsArgs

datafusion_physical_plan::statistics

Struct StatisticsArgs 

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pub struct StatisticsArgs { /* private fields */ }
Expand description

Arguments passed to ExecutionPlan::statistics_from_inputs carrying external information that operators can use when computing their statistics.

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impl StatisticsArgs

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pub fn new() -> Self

Creates new statistics arguments.

By default the partition is set to None (statistics should be computed for the entire plan).

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pub fn set_partition(&mut self, partition: Option<usize>)

Set the partition to compute statistics

  • None means statistics should be computed for the entire plan.
  • Some(idx) means statistics should be computed for the specified partition index.
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pub fn with_partition(self, partition: Option<usize>) -> Self

Builder Style API for Self::set_partition

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

Return the partition to compute statistics

Trait Implementations§

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impl Clone for StatisticsArgs

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fn clone(&self) -> StatisticsArgs

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for StatisticsArgs

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

Formats the value using the given formatter. Read more
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impl Default for StatisticsArgs

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fn default() -> StatisticsArgs

Returns the “default value” for a type. Read more

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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

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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, U> Into<U> 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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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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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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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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impl<T, U> TryFrom<U> for T
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type Error = Infallible

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

Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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