Struct datafusion_physical_expr::expressions::IsNullExpr

source · [−]

pub struct IsNullExpr { /* private fields */ }

Expand description

IS NULL expression

Implementations

source

impl IsNullExpr

source

pub fn new(arg: Arc<dyn PhysicalExpr>) -> Self

Create new not expression

source

pub fn arg(&self) -> &Arc<dyn PhysicalExpr>

Get the input expression

Trait Implementations

source

impl Debug for IsNullExpr

source

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

Formats the value using the given formatter. Read more

source

impl Display for IsNullExpr

source

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

Formats the value using the given formatter. Read more

source

impl PhysicalExpr for IsNullExpr

source

fn as_any(&self) -> &dyn Any

Return a reference to Any that can be used for downcasting

source

fn data_type(&self, _input_schema: &Schema) -> Result<DataType>

Get the data type of this expression, given the schema of the input

source

fn nullable(&self, _input_schema: &Schema) -> Result<bool>

Determine whether this expression is nullable, given the schema of the input

source

fn evaluate(&self, batch: &RecordBatch) -> Result<ColumnarValue>

Evaluate an expression against a RecordBatch

source

fn evaluate_selection(
 &self,
 batch: &RecordBatch,
 selection: &BooleanArray
) -> Result<ColumnarValue>

Evaluate an expression against a RecordBatch after first applying a validity array Read more

Auto Trait Implementations

impl !RefUnwindSafe for IsNullExpr

impl Send for IsNullExpr

impl Sync for IsNullExpr

impl Unpin for IsNullExpr

impl !UnwindSafe for IsNullExpr

Blanket Implementations

source

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

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

impl<T, U> Into for T where
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.

source

impl<T> Same<T> for T

type Output = T

Should always be Self

source

impl<T> ToString for T where
T: Display + ?Sized,

source

default fn to_string(&self) -> String

Converts the given value to a String. Read more

source

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

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

Performs the conversion.

source

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

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

Performs the conversion.

Struct datafusion_physical_expr::expressions::IsNullExpr

Implementations

impl IsNullExpr

pub fn new(arg: Arc<dyn PhysicalExpr>) -> Self

pub fn arg(&self) -> &Arc<dyn PhysicalExpr>

Trait Implementations

impl Debug for IsNullExpr

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

impl Display for IsNullExpr

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

impl PhysicalExpr for IsNullExpr

fn as_any(&self) -> &dyn Any

fn data_type(&self, _input_schema: &Schema) -> Result<DataType>

fn nullable(&self, _input_schema: &Schema) -> Result<bool>

fn evaluate(&self, batch: &RecordBatch) -> Result<ColumnarValue>

fn evaluate_selection( &self, batch: &RecordBatch, selection: &BooleanArray) -> Result<ColumnarValue>

Auto Trait Implementations

impl !RefUnwindSafe for IsNullExpr

impl Send for IsNullExpr

impl Sync for IsNullExpr

impl Unpin for IsNullExpr

impl !UnwindSafe for IsNullExpr

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

fn into(self) -> U

impl<T> Same<T> for T

type Output = T

impl<T> ToString for T where T: Display + ?Sized,

default fn to_string(&self) -> String

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

type Error = Infallible

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

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

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

fn vzip(self) -> V

fn evaluate_selection(
&self,
batch: &RecordBatch,
selection: &BooleanArray
) -> Result<ColumnarValue>

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> ToString for T where
T: Display + ?Sized,

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>,