Struct Common 

pub struct Common { /* private fields */ }

What a native table’s frequency synopsis says about one value, as the planner asks for it.

Holds the reader for the reason Stripes does. The synopsis is small where it exists at all, but it exists per column and copying every column’s into every plan would be paying for the columns nothing filters on, which is most of them.

Implementations

impl Common

pub fn new(reader: Reader) -> Self

The frequencies of a table somebody has open.

Trait Implementations

impl Clone for Common

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Common

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

Formats the value using the given formatter.

impl Frequencies for Common

fn column(&self, name: &str) -> Option<usize>

Which column of this store’s own numbering the column called name is.

fn rows(&self) -> u64

How many rows the store holds altogether.

fn rows_with(&self, column: usize, value: &Bound) -> Stat<u64>

How many rows hold exactly value in that column.

fn remainder(&self, column: usize) -> Option<Remainder>

The rows and the values one column’s synopsis does not account for.