ExprProperties

datafusion_python::datafusion_expr::sort_properties

Struct ExprProperties

pub struct ExprProperties {
    pub sort_properties: SortProperties,
    pub range: Interval,
    pub preserves_lex_ordering: bool,
}

Expand description

Represents the properties of a PhysicalExpr, including its sorting, range, and whether it preserves lexicographical ordering.

Fields§

§sort_properties: SortProperties

Properties that describe the sorting behavior of the expression, such as whether it is ordered, unordered, or a singleton value.

§range: Interval

A closed interval representing the range of possible values for the expression. Used to compute reliable bounds.

§preserves_lex_ordering: bool

Indicates whether the expression preserves lexicographical ordering of its inputs. For example, string concatenation preserves ordering, while addition does not.

Implementations§

impl ExprProperties

pub fn new_unknown() -> ExprProperties

Creates a new ExprProperties instance with unknown sort properties, unknown range, and unknown lexicographical ordering preservation.

pub fn with_order(self, order: SortProperties) -> ExprProperties

Sets the sorting properties of the expression and returns the modified instance.

pub fn with_range(self, range: Interval) -> ExprProperties

Sets the range of the expression and returns the modified instance.

pub fn with_preserves_lex_ordering( self, preserves_lex_ordering: bool, ) -> ExprProperties

Sets whether the expression maintains lexicographical ordering and returns the modified instance.

Trait Implementations§

impl Clone for ExprProperties

fn clone(&self) -> ExprProperties

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for ExprProperties

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for ExprProperties

impl !RefUnwindSafe for ExprProperties

impl Send for ExprProperties

impl Sync for ExprProperties

impl Unpin for ExprProperties

impl !UnwindSafe for ExprProperties

Blanket Implementations§

impl<T> AlignerFor<1> for T

type Aligner = AlignTo1<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<1024> for T

type Aligner = AlignTo1024<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<128> for T

type Aligner = AlignTo128<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<16> for T

type Aligner = AlignTo16<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<16384> for T

type Aligner = AlignTo16384<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<2> for T

type Aligner = AlignTo2<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<2048> for T

type Aligner = AlignTo2048<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<256> for T

type Aligner = AlignTo256<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<32> for T

type Aligner = AlignTo32<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<32768> for T

type Aligner = AlignTo32768<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<4> for T

type Aligner = AlignTo4<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<4096> for T

type Aligner = AlignTo4096<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<512> for T

type Aligner = AlignTo512<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<64> for T

type Aligner = AlignTo64<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<8> for T

type Aligner = AlignTo8<T>

The AlignTo* type which aligns Self to ALIGNMENT.

impl<T> AlignerFor<8192> for T

type Aligner = AlignTo8192<T>

The AlignTo* type which aligns Self to ALIGNMENT.

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

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

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Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more

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Gets a muatble reference to a field, determined by offset. Read more

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impl<S> ROExtOps<Aligned> for S

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Replaces a field (determined by offset) with value, returning the previous value of the field. Read more

fn f_swap<F>(&mut self, offset: FieldOffset<S, F, Aligned>, right: &mut S)

Swaps a field (determined by offset) with the same field in right. Read more

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where F: Copy,

Gets a copy of a field (determined by offset). The field is determined by offset. Read more

impl<S> ROExtOps<Unaligned> for S

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Replaces a field (determined by offset) with value, returning the previous value of the field. Read more

fn f_swap<F>(&mut self, offset: FieldOffset<S, F, Unaligned>, right: &mut S)

Swaps a field (determined by offset) with the same field in right. Read more

fn f_get_copy<F>(&self, offset: FieldOffset<S, F, Unaligned>) -> F
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Gets a copy of a field (determined by offset). The field is determined by offset. Read more

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type Output = T

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fn eq_id(&self, other: &Self) -> bool

Compares the address of self with the address of other. Read more

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fn drop_(self)
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type Owned = T

The resulting type after obtaining ownership.

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Transmutes the element type of this pointer.. Read more

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