flow::plan::reduce

Struct AccumulablePlan

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pub struct AccumulablePlan {
    pub full_aggrs: Vec<AggregateExpr>,
    pub simple_aggrs: Vec<AggrWithIndex>,
    pub distinct_aggrs: Vec<AggrWithIndex>,
}
Expand description

Accumulable plan for the execution of a reduction.

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§full_aggrs: Vec<AggregateExpr>

All of the aggregations we were asked to compute, stored in order.

§simple_aggrs: Vec<AggrWithIndex>

All of the non-distinct accumulable aggregates. Each element represents: (index of aggr output, index of value among inputs, aggr expr) These will all be rendered together in one dataflow fragment.

Invariant: the output index is the index of the aggregation in full_aggrs which means output index is always smaller than the length of full_aggrs

§distinct_aggrs: Vec<AggrWithIndex>

Same as simple_aggrs but for all of the DISTINCT accumulable aggregations.

Trait Implementations§

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impl Clone for AccumulablePlan

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fn clone(&self) -> AccumulablePlan

Returns a copy 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 AccumulablePlan

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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 Ord for AccumulablePlan

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fn cmp(&self, other: &AccumulablePlan) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for AccumulablePlan

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fn eq(&self, other: &AccumulablePlan) -> 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 PartialOrd for AccumulablePlan

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fn partial_cmp(&self, other: &AccumulablePlan) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Eq for AccumulablePlan

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impl StructuralPartialEq for AccumulablePlan

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