Struct mz_persist_types::stats::primitive::PrimitiveStats

source ·

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

Expand description

Statistics about a primitive non-optional column.

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. crate::stats::StructStats).

§upper: T

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

Struct mz_persist_types::stats::primitive::PrimitiveStatsCopy item path

Fields§

Trait Implementations§

impl<T: Clone> Clone for PrimitiveStats<T>

fn clone(&self) -> PrimitiveStats<T>

fn clone_from(&mut self, source: &Self)

impl ColumnStats for PrimitiveStats<String>

type Ref<'a> = &'a str

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<bool>

type Ref<'a> = bool

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<f32>

type Ref<'a> = f32

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<f64>

type Ref<'a> = f64

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<i16>

type Ref<'a> = i16

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<i32>

type Ref<'a> = i32

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<i64>

type Ref<'a> = i64

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<i8>

type Ref<'a> = i8

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<u16>

type Ref<'a> = u16

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<u32>

type Ref<'a> = u32

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<u64>

type Ref<'a> = u64

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnStats for PrimitiveStats<u8>

type Ref<'a> = u8

fn lower<'a>(&'a self) -> Option<Self::Ref<'a>>

fn upper<'a>(&'a self) -> Option<Self::Ref<'a>>

fn none_count(&self) -> usize

impl ColumnarStatsBuilder<&[u8]> for PrimitiveStats<Vec<u8>>

type ArrowColumn = GenericByteArray<GenericBinaryType<i32>>

type FinishedStats = PrimitiveStats<Vec<u8>>

fn from_column(col: &Self::ArrowColumn) -> Selfwhere Self: Sized,

fn finish(self) -> Self::FinishedStatswhere Self::FinishedStats: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>where Self: Sized,

impl ColumnarStatsBuilder<&str> for PrimitiveStats<String>

type ArrowColumn = GenericByteArray<GenericStringType<i32>>

type FinishedStats = PrimitiveStats<String>

fn from_column(col: &Self::ArrowColumn) -> Selfwhere Self: Sized,

fn finish(self) -> Self::FinishedStatswhere Self::FinishedStats: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>where Self: Sized,

impl ColumnarStatsBuilder<bool> for PrimitiveStats<bool>

type FinishedStats = PrimitiveStats<bool>

Struct mz_persist_types::stats::primitive::PrimitiveStats

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn finish(self) -> Self::FinishedStats
where Self::FinishedStats: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn finish(self) -> Self::FinishedStats
where Self::FinishedStats: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,

fn from_column_dyn(col: &dyn Array) -> Option<Self>
where Self: Sized,

fn from_column(col: &Self::ArrowColumn) -> Self
where Self: Sized,