Enum databend_common_ast::ast::WindowFrameBound

pub enum WindowFrameBound {
    CurrentRow,
    Preceding(Option<Box<Expr>>),
    Following(Option<Box<Expr>>),
}

Specifies WindowFrame’s start_bound and end_bound

Variants

CurrentRow

CURRENT ROW

Preceding(Option<Box<Expr>>)

<N> PRECEDING or UNBOUNDED PRECEDING

Following(Option<Box<Expr>>)

<N> FOLLOWING or UNBOUNDED FOLLOWING.

Trait Implementations

impl Clone for WindowFrameBound

fn clone(&self) -> WindowFrameBound

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WindowFrameBound

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

Formats the value using the given formatter.

impl Drive for WindowFrameBound

fn drive<V: Visitor>(&self, visitor: &mut V)

impl DriveMut for WindowFrameBound

fn drive_mut<V: VisitorMut>(&mut self, visitor: &mut V)

impl PartialEq for WindowFrameBound

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for WindowFrameBound