Module statistics

Contains definitions for working with Parquet statistics.

Though some common methods are available on enum, use pattern match to extract actual min and max values from statistics, see below:

Examples

use parquet::file::statistics::Statistics;

let stats = Statistics::int32(Some(1), Some(10), None, Some(3), true);
assert_eq!(stats.null_count_opt(), Some(3));
assert!(stats.is_min_max_deprecated());
assert!(stats.min_is_exact());
assert!(stats.max_is_exact());

match stats {
    Statistics::Int32(ref typed) => {
        assert_eq!(typed.min_opt(), Some(&1));
        assert_eq!(typed.max_opt(), Some(&10));
    }
    _ => {}
}

Structs

ValueStatistics

Typed statistics for one column chunk

Enums

Statistics

Strongly typed statistics for a column chunk within a row group.

Type Aliases

TypedStatistics

Typed implementation for Statistics.