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ExplainPlan

Struct ExplainPlan 

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pub struct ExplainPlan { /* private fields */ }
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ExplainPlan

Stable, deterministic representation of a planned query for observability.

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impl ExplainPlan

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pub const fn mode(&self) -> QueryMode

Return query mode projected by this explain plan.

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pub const fn access(&self) -> &ExplainAccessPath

Borrow projected access-path shape.

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pub const fn predicate(&self) -> &ExplainPredicate

Borrow projected predicate shape.

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pub const fn order_by(&self) -> &ExplainOrderBy

Borrow projected ORDER BY shape.

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pub const fn distinct(&self) -> bool

Return whether DISTINCT is enabled.

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pub const fn grouping(&self) -> &ExplainGrouping

Borrow projected grouped-shape metadata.

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pub const fn order_pushdown(&self) -> &ExplainOrderPushdown

Borrow projected ORDER pushdown status.

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pub const fn page(&self) -> &ExplainPagination

Borrow projected pagination status.

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pub const fn delete_limit(&self) -> &ExplainDeleteLimit

Borrow projected delete-limit status.

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pub const fn consistency(&self) -> MissingRowPolicy

Return missing-row consistency policy.

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impl ExplainPlan

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pub fn fingerprint(&self) -> PlanFingerprint

Compute a stable fingerprint for this explain plan.

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impl ExplainPlan

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pub fn continuation_signature( &self, entity_path: &'static str, ) -> ContinuationSignature

Compute the continuation signature for this explain plan.

Included fields:

  • entity path
  • mode (load/delete)
  • access path
  • normalized predicate
  • canonical order-by (including implicit PK tie-break)
  • distinct flag
  • grouped shape (group keys, aggregate terminals, grouped limits)
  • projection identity section (semantic projection hash when available)

Excluded fields:

  • pagination window (limit, offset)
  • delete limits
  • cursor boundary/token state

Trait Implementations§

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impl Clone for ExplainPlan

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fn clone(&self) -> ExplainPlan

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExplainPlan

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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 PartialEq for ExplainPlan

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fn eq(&self, other: &ExplainPlan) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for ExplainPlan

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impl StructuralPartialEq for ExplainPlan

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V