Struct GroupEstimate 

#[non_exhaustive]
pub struct GroupEstimate {
    pub estimate: u64,
    pub low: u64,
    pub high: u64,
    pub sample_rows: usize,
    pub rows: usize,
    pub exact: bool,
    pub time: Duration,
}

One probe’s answer.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

estimate: u64

The Chao1 estimate (or the exact count), in groups.

low: u64

The low end of its range (equal to estimate when counted exactly).

high: u64

The high end of its range.

sample_rows: usize

Rows in the last sample (the whole input when counted exactly).

rows: usize

Rows of the input (the whole input, also when the sample was drawn from a part of it).

exact: bool

True when every row was counted (inputs of at most 4,096 rows).

time: Duration

Wall time of the probe.

Trait Implementations

impl Clone for GroupEstimate

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for GroupEstimate

impl Debug for GroupEstimate

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

Formats the value using the given formatter.

impl PartialEq for GroupEstimate

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for GroupEstimate