Struct Built 

pub struct Built {
    pub column: usize,
    pub rows: u64,
    pub distinct: u64,
    pub exact: bool,
    pub order: Order,
    pub summary_bytes: usize,
    pub sketch_bytes: usize,
    pub stripes: usize,
    pub column_bytes: u64,
    pub built: bool,
    pub build: Duration,
}

What one column’s statistics cost and what they say.

Fields

column: usize

Which column was summarized.

rows: u64

Rows in the column, nulls included.

distinct: u64

Distinct non-null values, as the summary reports them.

exact: bool

Whether that distinct count is exact rather than a sketch estimate.

order: Order

Which way the values run.

summary_bytes: usize

What the summary section takes in the file.

sketch_bytes: usize

What the sketches section takes in the file.

stripes: usize

How many per stripe sketches went in it, which is zero for a column the per stripe rule did not promote and is most of them.

column_bytes: u64

What the column takes in the file, which is what the budget is a share of.

built: bool

Whether the sections were kept. False means they were built, measured, and found to cost more than section 3.8 allows, so the file does not have them and every query plans as though statistics had never been implemented.

build: Duration

How long the build took, the reading of the column included.

Implementations

impl Built

pub fn bytes(&self) -> usize

Both sections together, which is what the budget spends.

Trait Implementations

impl Clone for Built

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 Built

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

Formats the value using the given formatter.