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));
    }
    _ => {}
}

Modules

• private 🔒

Macros

• statistics_enum_func 🔒
• statistics_new_func 🔒
  Macro to generate methods to create Statistics.

Structs

• ValueStatistics
  Typed statistics for one column chunk

Enums

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

Functions

• from_thrift
  Converts Thrift definition into Statistics.
• to_thrift
  Convert Statistics into Thrift definition.

Type Aliases

• TypedStatistics
  Typed implementation for Statistics.