Method min_values

datafusion-examples/examples/query_planning/pruning.rs:151–160

(&self, column: &Column)

    }

    fn min_values(&self, column: &Column) -> Option<ArrayRef> {
        // The pruning predicate evaluates the bounds for multiple expressions
        // at once, so  return an array with an element for the minimum value in
        // each file
        match column.name.as_str() {
            "x" => Some(i32_array(self.x_values.iter().map(|(min, _)| min))),
            "y" => Some(i32_array(self.y_values.iter().map(|(min, _)| min))),
            name => panic!("unknown column name: {name}"),
        }
    }

    fn max_values(&self, column: &Column) -> Option<ArrayRef> {
        // similarly to min_values, return an array with an element for the