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QueryStep

qualia_core_db::specialized_libs::statistical_computing

Struct QueryStep 

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pub struct QueryStep {
    pub operation: QueryOperation,
    pub estimated_cost: f64,
    pub estimated_rows: usize,
}
Expand description

A single step in an optimized query plan: the operation plus its estimated cost and output row count.

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§operation: QueryOperation§estimated_cost: f64§estimated_rows: usize

Trait Implementations§

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impl Clone for QueryStep

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fn clone(&self) -> QueryStep

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 QueryStep

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

Formats the value using the given formatter. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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