Enum WindowBound 

pub enum WindowBound {
    UnboundedPreceding,
    Preceding(ExprRef),
    CurrentRow,
    Following(ExprRef),
    UnboundedFollowing,
}

One end of a window frame.

Variants

UnboundedPreceding

UNBOUNDED PRECEDING, the first row of the partition.

Preceding(ExprRef)

n PRECEDING, holding the offset expression.

CurrentRow

CURRENT ROW.

Following(ExprRef)

n FOLLOWING, holding the offset expression.

UnboundedFollowing

UNBOUNDED FOLLOWING, the last row of the partition.

Trait Implementations

impl Clone for WindowBound

fn clone(&self) -> WindowBound

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WindowBound

impl Debug for WindowBound

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

Formats the value using the given formatter.

impl Eq for WindowBound

impl PartialEq for WindowBound

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WindowBound