Struct mz_transform::join_implementation::Characteristics
source · [−]pub struct Characteristics {
unique_key: bool,
key_length: usize,
arranged: bool,
filters: FilterCharacteristics,
input: Reverse<usize>,
}
Expand description
Characteristics of a join order candidate collection.
A candidate is described by a collection and a key, and may have various liabilities. Primarily, the candidate may risk substantial inflation of records, which is something that concerns us greatly. Additionally the candidate may be unarranged, and we would prefer candidates that do not require additional memory. Finally, we prefer lower id collections in the interest of consistent tie-breaking.
Fields
unique_key: bool
key_length: usize
arranged: bool
filters: FilterCharacteristics
input: Reverse<usize>
Implementations
Trait Implementations
sourceimpl Clone for Characteristics
impl Clone for Characteristics
sourcefn clone(&self) -> Characteristics
fn clone(&self) -> Characteristics
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresourceimpl Debug for Characteristics
impl Debug for Characteristics
sourceimpl Ord for Characteristics
impl Ord for Characteristics
sourcefn cmp(&self, other: &Characteristics) -> Ordering
fn cmp(&self, other: &Characteristics) -> Ordering
1.21.0 · sourcefn max(self, other: Self) -> Self
fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
1.21.0 · sourcefn min(self, other: Self) -> Self
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
Restrict a value to a certain interval. Read more
sourceimpl PartialEq<Characteristics> for Characteristics
impl PartialEq<Characteristics> for Characteristics
sourcefn eq(&self, other: &Characteristics) -> bool
fn eq(&self, other: &Characteristics) -> bool
sourceimpl PartialOrd<Characteristics> for Characteristics
impl PartialOrd<Characteristics> for Characteristics
sourcefn partial_cmp(&self, other: &Characteristics) -> Option<Ordering>
fn partial_cmp(&self, other: &Characteristics) -> Option<Ordering>
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl Eq for Characteristics
impl StructuralEq for Characteristics
impl StructuralPartialEq for Characteristics
Auto Trait Implementations
impl RefUnwindSafe for Characteristics
impl Send for Characteristics
impl Sync for Characteristics
impl Unpin for Characteristics
impl UnwindSafe for Characteristics
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.sourceimpl<T> FutureExt for T
impl<T> FutureExt for T
sourcefn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
sourcefn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
sourcefn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request
sourceimpl<T> Pointable for T
impl<T> Pointable for T
sourceimpl<T> ProgressEventTimestamp for Twhere
T: Data + Debug + Any,
impl<T> ProgressEventTimestamp for Twhere
T: Data + Debug + Any,
sourceimpl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
sourcefn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
See
RustType::from_proto
.sourcefn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
See
RustType::into_proto
.