pub enum WindowFunctionDefinition {
AggregateFunction(AggregateFunction),
BuiltInWindowFunction(BuiltInWindowFunction),
AggregateUDF(Arc<AggregateUDF>),
WindowUDF(Arc<WindowUDF>),
}
Expand description
WindowFunction Defines which implementation of an aggregate function DataFusion should call.
Variants§
AggregateFunction(AggregateFunction)
A built in aggregate function that leverages an aggregate function
BuiltInWindowFunction(BuiltInWindowFunction)
A a built-in window function
AggregateUDF(Arc<AggregateUDF>)
A user defined aggregate function
WindowUDF(Arc<WindowUDF>)
A user defined aggregate function
Implementations§
source§impl WindowFunctionDefinition
impl WindowFunctionDefinition
sourcepub fn return_type(
&self,
input_expr_types: &[DataType]
) -> Result<DataType, DataFusionError>
pub fn return_type( &self, input_expr_types: &[DataType] ) -> Result<DataType, DataFusionError>
Returns the datatype of the window function
Trait Implementations§
source§impl Clone for WindowFunctionDefinition
impl Clone for WindowFunctionDefinition
source§fn clone(&self) -> WindowFunctionDefinition
fn clone(&self) -> WindowFunctionDefinition
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for WindowFunctionDefinition
impl Debug for WindowFunctionDefinition
source§impl Display for WindowFunctionDefinition
impl Display for WindowFunctionDefinition
source§impl Hash for WindowFunctionDefinition
impl Hash for WindowFunctionDefinition
source§impl PartialEq for WindowFunctionDefinition
impl PartialEq for WindowFunctionDefinition
source§fn eq(&self, other: &WindowFunctionDefinition) -> bool
fn eq(&self, other: &WindowFunctionDefinition) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl TryFrom<&WindowFunction> for WindowFunctionDefinition
impl TryFrom<&WindowFunction> for WindowFunctionDefinition
§type Error = DataFusionError
type Error = DataFusionError
The type returned in the event of a conversion error.
source§fn try_from(
expr: &WindowFunction
) -> Result<WindowFunctionDefinition, <WindowFunctionDefinition as TryFrom<&WindowFunction>>::Error>
fn try_from( expr: &WindowFunction ) -> Result<WindowFunctionDefinition, <WindowFunctionDefinition as TryFrom<&WindowFunction>>::Error>
Performs the conversion.
impl Eq for WindowFunctionDefinition
impl StructuralPartialEq for WindowFunctionDefinition
Auto Trait Implementations§
impl Freeze for WindowFunctionDefinition
impl !RefUnwindSafe for WindowFunctionDefinition
impl Send for WindowFunctionDefinition
impl Sync for WindowFunctionDefinition
impl Unpin for WindowFunctionDefinition
impl !UnwindSafe for WindowFunctionDefinition
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moreCreates a shared type from an unshared type.