Method is_singleton

datafusion/common/src/stats.rs:1092–1100

Column contains a single non null value (e.g constant).

(&self)

impl ColumnStatistics {
    /// Column contains a single non null value (e.g constant).
    pub fn is_singleton(&self) -> bool {
        match (&self.min_value, &self.max_value) {
            // Min and max values are the same and not infinity.
            (Precision::Exact(min), Precision::Exact(max)) => {
                !min.is_null() && !max.is_null() && (min == max)
            }
            (_, _) => false,
        }
    }

    /// Returns a [`ColumnStatistics`] instance having all [`Precision::Absent`] parameters.
    pub fn new_unknown() -> Self {