Method find_stat_column

datafusion/pruning/src/pruning_predicate.rs:777–798

(
        &self,
        column: &phys_expr::Column,
        statistics_type: StatisticsType,
    )

    }

    fn find_stat_column(
        &self,
        column: &phys_expr::Column,
        statistics_type: StatisticsType,
    ) -> Option<usize> {
        match statistics_type {
            StatisticsType::RowCount => {
                // Use the first row count we find, if any
                self.columns
                    .iter()
                    .enumerate()
                    .find(|(_i, (_c, t, _f))| t == &statistics_type)
                    .map(|(i, (_c, _t, _f))| i)
            }
            _ => self
                .columns
                .iter()
                .enumerate()
                .find(|(_i, (c, t, _f))| c == column && t == &statistics_type)
                .map(|(i, (_c, _t, _f))| i),
        }
    }

    /// Rewrites column_expr so that all appearances of column
    /// are replaced with a reference to either the min or max