mz_persist_types::stats

Struct ColumnNullStats

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pub struct ColumnNullStats {
    pub count: usize,
}
Expand description

Statistics about the null values in a column.

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§count: usize

Number of nulls in the column.

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impl Clone for ColumnNullStats

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fn clone(&self) -> ColumnNullStats

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 ColumnNullStats

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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 RustType<ProtoOptionStats> for ColumnNullStats

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fn into_proto(&self) -> ProtoOptionStats

Convert a Self into a Proto value.
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fn from_proto(proto: ProtoOptionStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value. Read more
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fn into_proto_owned(self) -> Proto

A zero clone version of Self::into_proto that types can optionally implement, otherwise, the default implementation delegates to Self::into_proto.
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impl Copy for ColumnNullStats

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

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Performs the cast.
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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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fn from(t: T) -> T

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Calls U::from(self).

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

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const ALIGN: usize = _

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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See RustType::from_proto.
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