Struct datafusion_expr::conditional_expressions::CaseBuilder

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pub struct CaseBuilder { /* private fields */ }

Expand description

Helper struct for building Expr::Case

Implementations

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impl CaseBuilder

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pub fn new(
 expr: Option<Box<Expr>>,
 when_expr: Vec<Expr>,
 then_expr: Vec<Expr>,
 else_expr: Option<Box<Expr>>
) -> Self

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pub fn when(&mut self, when: Expr, then: Expr) -> CaseBuilder

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pub fn otherwise(&mut self, else_expr: Expr) -> Result<Expr>

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pub fn end(&self) -> Result<Expr>

Auto Trait Implementations

impl !RefUnwindSafe for CaseBuilder

impl Send for CaseBuilder

impl Sync for CaseBuilder

impl Unpin for CaseBuilder

impl !UnwindSafe for CaseBuilder

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, 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.

Struct datafusion_expr::conditional_expressions::CaseBuilder

Implementations

impl CaseBuilder

pub fn new(
    expr: Option<Box<Expr>>,
    when_expr: Vec<Expr>,
    then_expr: Vec<Expr>,
    else_expr: Option<Box<Expr>>
) -> Self

pub fn when(&mut self, when: Expr, then: Expr) -> CaseBuilder

pub fn otherwise(&mut self, else_expr: Expr) -> Result<Expr>

pub fn end(&self) -> Result<Expr>

Auto Trait Implementations

impl !RefUnwindSafe for CaseBuilder

impl Send for CaseBuilder

impl Sync for CaseBuilder

impl Unpin for CaseBuilder

impl !UnwindSafe for CaseBuilder

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, 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>

Struct datafusion_expr::conditional_expressions::CaseBuilder

Implementations

impl CaseBuilder

pub fn new( expr: Option<Box<Expr>>, when_expr: Vec<Expr>, then_expr: Vec<Expr>, else_expr: Option<Box<Expr>>) -> Self

pub fn when(&mut self, when: Expr, then: Expr) -> CaseBuilder

pub fn otherwise(&mut self, else_expr: Expr) -> Result<Expr>

pub fn end(&self) -> Result<Expr>

Auto Trait Implementations

impl !RefUnwindSafe for CaseBuilder

impl Send for CaseBuilder

impl Sync for CaseBuilder

impl Unpin for CaseBuilder

impl !UnwindSafe for CaseBuilder

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, 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>

pub fn new(
expr: Option<Box<Expr>>,
when_expr: Vec<Expr>,
then_expr: Vec<Expr>,
else_expr: Option<Box<Expr>>
) -> Self

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

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