Struct datafusion::physical_plan::expressions::NthValue

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pub struct NthValue { /* private fields */ }

Expand description

nth_value expression

Implementations

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impl NthValue

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pub fn first(
 name: impl Into<String>,
 expr: Arc<dyn PhysicalExpr>,
 data_type: DataType
) -> Self

Create a new FIRST_VALUE window aggregate function

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pub fn last(
 name: impl Into<String>,
 expr: Arc<dyn PhysicalExpr>,
 data_type: DataType
) -> Self

Create a new LAST_VALUE window aggregate function

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pub fn nth(
 name: impl Into<String>,
 expr: Arc<dyn PhysicalExpr>,
 data_type: DataType,
 n: u32
) -> Result<Self>

Create a new NTH_VALUE window aggregate function

Trait Implementations

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impl Debug for NthValue

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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 NthValue

impl Send for NthValue

impl Sync for NthValue

impl Unpin for NthValue

impl !UnwindSafe for NthValue

Blanket Implementations

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

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pub 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

pub 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

pub 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

pub fn from(t: T) -> T

Performs the conversion.

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

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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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

pub 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

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

Performs the conversion.

Struct datafusion::physical_plan::expressions::NthValue

Implementations

impl NthValue

pub fn first(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType
) -> Self

pub fn last(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType
) -> Self

pub fn nth(
    name: impl Into<String>,
    expr: Arc<dyn PhysicalExpr>,
    data_type: DataType,
    n: u32
) -> Result<Self>

Trait Implementations

impl Debug for NthValue

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

Auto Trait Implementations

impl !RefUnwindSafe for NthValue

impl Send for NthValue

impl Sync for NthValue

impl Unpin for NthValue

impl !UnwindSafe for NthValue

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

impl<T> Same<T> for T

type Output = T

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

type Error = Infallible

pub 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

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

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

pub fn vzip(self) -> V

Struct datafusion::physical_plan::expressions::NthValue

Implementations

impl NthValue

pub fn first( name: impl Into<String>, expr: Arc<dyn PhysicalExpr>, data_type: DataType) -> Self

pub fn last( name: impl Into<String>, expr: Arc<dyn PhysicalExpr>, data_type: DataType) -> Self

pub fn nth( name: impl Into<String>, expr: Arc<dyn PhysicalExpr>, data_type: DataType, n: u32) -> Result<Self>

Trait Implementations

impl Debug for NthValue

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

Auto Trait Implementations

impl !RefUnwindSafe for NthValue

impl Send for NthValue

impl Sync for NthValue

impl Unpin for NthValue

impl !UnwindSafe for NthValue

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

impl<T> Same<T> for T

type Output = T

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

type Error = Infallible

pub 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

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

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

pub fn vzip(self) -> V

pub fn first(
name: impl Into<String>,
expr: Arc<dyn PhysicalExpr>,
data_type: DataType
) -> Self

pub fn last(
name: impl Into<String>,
expr: Arc<dyn PhysicalExpr>,
data_type: DataType
) -> Self

pub fn nth(
name: impl Into<String>,
expr: Arc<dyn PhysicalExpr>,
data_type: DataType,
n: u32
) -> Result<Self>

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, 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>,