Struct mz_persist_types::stats::PrimitiveStats

pub struct PrimitiveStats<T> {
    pub lower: T,
    pub upper: T,
}

Statistics about a column of some non-optional parquet type.

Fields

lower: T

An inclusive lower bound on the data contained in the column.

This will often be a tight bound, but it’s not guaranteed. Persist reserves the right to (for example) invent smaller bounds for long byte strings. SUBTLE: This means that this exact value may not be present in the column.

Similarly, if the column is empty, this will contain T: Default. Emptiness will be indicated in statistics higher up (i.e. StructStats).

upper: T

Same as Self::lower but an (also inclusive) upper bound.

Trait Implementations

impl ColumnStats<String> for PrimitiveStats<String>

fn lower<'a>(&'a self) -> Option<<String as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<String as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<Vec<u8>> for PrimitiveStats<Vec<u8>>

fn lower<'a>(&'a self) -> Option<<Vec<u8> as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<Vec<u8> as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<bool> for PrimitiveStats<bool>

fn lower<'a>(&'a self) -> Option<<bool as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<bool as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<f32> for PrimitiveStats<f32>

fn lower<'a>(&'a self) -> Option<<f32 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<f32 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<f64> for PrimitiveStats<f64>

fn lower<'a>(&'a self) -> Option<<f64 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<f64 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<i16> for PrimitiveStats<i16>

fn lower<'a>(&'a self) -> Option<<i16 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<i16 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<i32> for PrimitiveStats<i32>

fn lower<'a>(&'a self) -> Option<<i32 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<i32 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<i64> for PrimitiveStats<i64>

fn lower<'a>(&'a self) -> Option<<i64 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<i64 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<i8> for PrimitiveStats<i8>

fn lower<'a>(&'a self) -> Option<<i8 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<i8 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<u16> for PrimitiveStats<u16>

fn lower<'a>(&'a self) -> Option<<u16 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<u16 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<u32> for PrimitiveStats<u32>

fn lower<'a>(&'a self) -> Option<<u32 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<u32 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<u64> for PrimitiveStats<u64>

fn lower<'a>(&'a self) -> Option<<u64 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<u64 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl ColumnStats<u8> for PrimitiveStats<u8>

fn lower<'a>(&'a self) -> Option<<u8 as Data>::Ref<'a>>

An inclusive lower bound on the data contained in the column, if known.

fn upper<'a>(&'a self) -> Option<<u8 as Data>::Ref<'a>>

Same as Self::lower but an (also inclusive) upper bound.

fn none_count(&self) -> usize

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

impl<T: Serialize> Debug for PrimitiveStats<T>

where PrimitiveStats<T>: RustType<ProtoPrimitiveStats>,

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

Formats the value using the given formatter.

impl Debug for PrimitiveStats<Vec<u8>>

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

Formats the value using the given formatter.

impl<T: Serialize> DynStats for PrimitiveStats<T>

where PrimitiveStats<T>: RustType<ProtoPrimitiveStats> + Send + Sync + 'static,

fn as_any(&self) -> &dyn Any

Returns self as a dyn Any for downcasting.

fn into_proto(&self) -> ProtoDynStats

See mz_proto::RustType::into_proto.

fn debug_json(&self) -> Value

Formats these statistics for use in INSPECT SHARD and debugging.

fn type_name(&self) -> &'static str

Returns the name of the erased type for use in error messages.

impl DynStats for PrimitiveStats<Vec<u8>>

fn as_any(&self) -> &dyn Any

Returns self as a dyn Any for downcasting.

fn into_proto(&self) -> ProtoDynStats

See mz_proto::RustType::into_proto.

fn debug_json(&self) -> Value

Formats these statistics for use in INSPECT SHARD and debugging.

fn type_name(&self) -> &'static str

Returns the name of the erased type for use in error messages.

impl RustType<ProtoPrimitiveBytesStats> for PrimitiveStats<Vec<u8>>

fn into_proto(&self) -> ProtoPrimitiveBytesStats

Convert a Self into a Proto value.

fn from_proto( proto: ProtoPrimitiveBytesStats ) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<String>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<bool>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<f32>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<f64>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<i16>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<i32>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<i64>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<i8>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<u16>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<u32>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<u64>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl RustType<ProtoPrimitiveStats> for PrimitiveStats<u8>

fn into_proto(&self) -> ProtoPrimitiveStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoPrimitiveStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl StatsFrom<BinaryArray<i32>> for PrimitiveStats<Vec<u8>>

fn stats_from(col: &BinaryArray<i32>, validity: ValidityRef) -> Self

Computes statistics from a column of data.

impl StatsFrom<Bitmap> for PrimitiveStats<bool>

fn stats_from(col: &Bitmap, validity: ValidityRef) -> Self

Computes statistics from a column of data.

impl<T> StatsFrom<Buffer<T>> for PrimitiveStats<T>

where T: NativeType + Simd, T::Simd: SimdOrd<T>,

fn stats_from(col: &Buffer<T>, validity: ValidityRef) -> Self

Computes statistics from a column of data.

impl StatsFrom<Utf8Array<i32>> for PrimitiveStats<String>

fn stats_from(col: &Utf8Array<i32>, validity: ValidityRef) -> Self

Computes statistics from a column of data.