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ExplainAccessDecisionV1

Struct ExplainAccessDecisionV1 

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pub struct ExplainAccessDecisionV1 {
    pub schema_version: u32,
    pub selected: ExplainSelectedAccessV1,
    pub candidates: Vec<ExplainAccessCandidateV1>,
    pub alternatives: Vec<ExplainEligibleAlternativeV1>,
    pub rejections: Vec<ExplainRejectedIndexV1>,
    pub residual: ExplainResidualSummaryV1,
}
Expand description

Stable JSON-facing access-decision projection for logical EXPLAIN.

This DTO is derived from the planner-owned access-choice snapshot and the selected explain access path. It is not an optimizer model and does not participate in access selection.

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§schema_version: u32

Schema version for this access-decision payload shape.

§selected: ExplainSelectedAccessV1

Selected access path summary.

§candidates: Vec<ExplainAccessCandidateV1>

Planner candidate summaries recorded for the selected access family.

§alternatives: Vec<ExplainEligibleAlternativeV1>

Eligible alternatives not selected by the planner.

§rejections: Vec<ExplainRejectedIndexV1>

Rejected index candidates and planner-owned reason strings.

§residual: ExplainResidualSummaryV1

Residual-work summary for the selected route when available.

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impl Clone for ExplainAccessDecisionV1

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fn clone(&self) -> ExplainAccessDecisionV1

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ExplainAccessDecisionV1

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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 ExplainAccessDecisionV1

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fn eq(&self, other: &ExplainAccessDecisionV1) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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 ExplainAccessDecisionV1

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impl StructuralPartialEq for ExplainAccessDecisionV1

Auto Trait 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
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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
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type Owned = T

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

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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
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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
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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>

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impl<V, T> VZip<V> for T
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fn vzip(self) -> V