mz_persist_types::stats

Struct NoneStats

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pub struct NoneStats;
Expand description

Empty set of statistics.

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impl ColumnStats for NoneStats

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type Ref<'a> = ()

Type returned as the stat bounds.
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fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known. Read more
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fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.
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fn none_count(&self) -> usize

The number of Nones if this column is optional or 0 if it isn’t.
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impl Debug for NoneStats

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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 DynStats for NoneStats

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fn debug_json(&self) -> Value

Formats these statistics for use in INSPECT SHARD and debugging.
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fn into_columnar_stats(self) -> ColumnarStats

Return self as ColumnarStats.
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fn type_name(&self) -> &'static str

Returns the name of the erased type for use in error messages.
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impl RustType<()> for NoneStats

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fn into_proto(&self)

Convert a Self into a Proto value.
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fn from_proto(_proto: ()) -> 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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