Method includes_current_row

src/expr/src/relation.rs:3922–3968

(&self)

    }

    fn includes_current_row(&self) -> bool {
        use WindowFrameBound::*;
        match self.start_bound {
            UnboundedPreceding => match self.end_bound {
                UnboundedPreceding => false,
                OffsetPreceding(0) => true,
                OffsetPreceding(_) => false,
                CurrentRow => true,
                OffsetFollowing(_) => true,
                UnboundedFollowing => true,
            },
            OffsetPreceding(0) => match self.end_bound {
                UnboundedPreceding => unreachable!(),
                OffsetPreceding(0) => true,
                // Any nonzero offsets here will create an empty window
                OffsetPreceding(_) => false,
                CurrentRow => true,
                OffsetFollowing(_) => true,
                UnboundedFollowing => true,
            },
            OffsetPreceding(_) => match self.end_bound {
                UnboundedPreceding => unreachable!(),
                // Window ends at the current row
                OffsetPreceding(0) => true,
                OffsetPreceding(_) => false,
                CurrentRow => true,
                OffsetFollowing(_) => true,
                UnboundedFollowing => true,
            },
            CurrentRow => true,
            OffsetFollowing(0) => match self.end_bound {
                UnboundedPreceding => unreachable!(),
                OffsetPreceding(_) => unreachable!(),
                CurrentRow => unreachable!(),
                OffsetFollowing(_) => true,
                UnboundedFollowing => true,
            },
            OffsetFollowing(_) => match self.end_bound {
                UnboundedPreceding => unreachable!(),
                OffsetPreceding(_) => unreachable!(),
                CurrentRow => unreachable!(),
                OffsetFollowing(_) => false,
                UnboundedFollowing => false,
            },
            UnboundedFollowing => false,
        }
    }
}

/// Describe how frame bounds are interpreted