table::stats

Struct ColumnStatistics

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pub struct ColumnStatistics {
    pub null_count: Option<usize>,
    pub max_value: Option<Value>,
    pub min_value: Option<Value>,
    pub distinct_count: Option<usize>,
}
Expand description

Statistics for a column within a relation

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§null_count: Option<usize>

Number of null values on column

§max_value: Option<Value>

Maximum value of column

§min_value: Option<Value>

Minimum value of column

§distinct_count: Option<usize>

Number of distinct values

Trait Implementations§

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impl Clone for ColumnStatistics

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fn clone(&self) -> ColumnStatistics

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 ColumnStatistics

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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 Default for ColumnStatistics

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fn default() -> ColumnStatistics

Returns the “default value” for a type. Read more
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impl PartialEq for ColumnStatistics

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fn eq(&self, other: &ColumnStatistics) -> 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 ColumnStatistics

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impl StructuralPartialEq for ColumnStatistics

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