Method is_unbounded

datafusion/expr/src/window_frame.rs:332–338

(&self)

impl WindowFrameBound {
    pub fn is_unbounded(&self) -> bool {
        match self {
            WindowFrameBound::Preceding(elem) => elem.is_null(),
            WindowFrameBound::CurrentRow => false,
            WindowFrameBound::Following(elem) => elem.is_null(),
        }
    }
}

impl WindowFrameBound {