Struct mz_transform::fusion::project::Project

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pub struct Project;
Expand description

Fuses Project operators with parent operators when possible.

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impl Project

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pub fn action(relation: &mut MirRelationExpr)

Fuses Project operators with parent operators when possible.

Trait Implementations§

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impl Debug for Project

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

Formats the value using the given formatter. Read more
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impl Transform for Project

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fn transform( &self, relation: &mut MirRelationExpr, _: TransformArgs<'_> ) -> Result<(), TransformError>

Transform a relation into a functionally equivalent relation.
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fn debug(&self) -> String

A string describing the transform. Read more

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

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fn type_id(&self) -> TypeId

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fn borrow(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

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fn instrument(self, span: Span) -> Instrumented<Self>

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That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_request(self) -> Request<T>

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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unsafe fn drop(ptr: usize)

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impl<P, R> ProtoType<R> for Pwhere R: RustType<P>,

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fn into_rust(self) -> Result<R, TryFromProtoError>

See RustType::from_proto.
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fn from_rust(rust: &R) -> P

See RustType::into_proto.
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type Output = T

Should always be Self
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type Error = <U as TryFrom<T>>::Error

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

Performs the conversion.
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