Enum FrameBound 

pub enum FrameBound {
    UnboundedPreceding,
    Preceding(u64),
    CurrentRow,
    Following(u64),
    UnboundedFollowing,
}

One end of a window frame, for WindowSpec::rows_between and WindowSpec::range_between.

Variants

UnboundedPreceding

UNBOUNDED PRECEDING: the first row of the partition.

Preceding(u64)

n PRECEDING: n rows (or, for RANGE, values) before the current row.

CurrentRow

CURRENT ROW.

Following(u64)

n FOLLOWING: n rows (or, for RANGE, values) after the current row.

UnboundedFollowing

UNBOUNDED FOLLOWING: the last row of the partition.

Trait Implementations

impl Clone for FrameBound

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 FrameBound

impl Debug for FrameBound

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

Formats the value using the given formatter.