Struct datafusion_physical_expr::analysis::ExprBoundaries

pub struct ExprBoundaries {
    pub column: Column,
    pub interval: Interval,
    pub distinct_count: Option<usize>,
}

Represents the boundaries of the resulting value from a physical expression, if it were to be an expression, if it were to be evaluated.

Fields

column: Column

interval: Interval

Minimum and maximum values this expression can have.

distinct_count: Option<usize>

Maximum number of distinct values this expression can produce, if known.

Implementations

impl ExprBoundaries

pub fn from_column(stats: &ColumnStatistics, col: String, index: usize) -> Self

Create a new ExprBoundaries object from column level statistics.

Trait Implementations

impl Clone for ExprBoundaries

fn clone(&self) -> ExprBoundaries

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprBoundaries

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

Formats the value using the given formatter.

impl PartialEq<ExprBoundaries> for ExprBoundaries

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ExprBoundaries