pub enum ScalarFunctionDefinition {
BuiltIn(BuiltinScalarFunction),
UDF(Arc<ScalarUDF>),
Name(Arc<str>),
}
Expand description
Defines which implementation of a function for DataFusion to call.
Variants§
BuiltIn(BuiltinScalarFunction)
Resolved to a BuiltinScalarFunction
There is plan to migrate BuiltinScalarFunction
to UDF-based implementation (issue#8045)
This variant is planned to be removed in long term
UDF(Arc<ScalarUDF>)
Resolved to a user defined function
Name(Arc<str>)
A scalar function constructed with name. This variant can not be executed directly and instead must be resolved to one of the other variants prior to physical planning.
Implementations§
source§impl ScalarFunctionDefinition
impl ScalarFunctionDefinition
sourcepub fn is_volatile(&self) -> Result<bool, DataFusionError>
pub fn is_volatile(&self) -> Result<bool, DataFusionError>
Whether this function is volatile, i.e. whether it can return different results when evaluated multiple times with the same input.
Trait Implementations§
source§impl Clone for ScalarFunctionDefinition
impl Clone for ScalarFunctionDefinition
source§fn clone(&self) -> ScalarFunctionDefinition
fn clone(&self) -> ScalarFunctionDefinition
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 ScalarFunctionDefinition
impl Debug for ScalarFunctionDefinition
source§impl Hash for ScalarFunctionDefinition
impl Hash for ScalarFunctionDefinition
source§impl PartialEq for ScalarFunctionDefinition
impl PartialEq for ScalarFunctionDefinition
source§fn eq(&self, other: &ScalarFunctionDefinition) -> bool
fn eq(&self, other: &ScalarFunctionDefinition) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl Eq for ScalarFunctionDefinition
impl StructuralPartialEq for ScalarFunctionDefinition
Auto Trait Implementations§
impl Freeze for ScalarFunctionDefinition
impl !RefUnwindSafe for ScalarFunctionDefinition
impl Send for ScalarFunctionDefinition
impl Sync for ScalarFunctionDefinition
impl Unpin for ScalarFunctionDefinition
impl !UnwindSafe for ScalarFunctionDefinition
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.