Module stats 

Statistics Information Module

Provide the functionality for managing and collecting statistical information required by the query optimizer.

Module Structure

“Manager” refers to a statistical information manager that oversees and manages all statistical data in a centralized manner. tag – Statistics on tag usage “Edge” – Statistical information about the type of edges “Property” – Statistical information about properties. histogram – Statistical information in the form of a histogram. “Feedback” – A module for collecting runtime statistics and feedback.

Re-exports

pub use collector::CollectedSummary;

pub use collector::StatisticsCollector;

pub use edge::EdgeTypeStatistics;

pub use edge::HotVertexInfo;

pub use edge::SkewnessLevel;

pub use feedback::generate_query_fingerprint;

pub use feedback::normalize_query;

pub use feedback::CardinalityFeedbackManager;

pub use feedback::DecisionFeedbackStore;

pub use feedback::DecorrelationAdvice;

pub use feedback::FeedbackDrivenSelectivity;

pub use feedback::OperatorFeedback;

pub use feedback::QueryExecutionFeedback;

pub use feedback::QueryFeedbackHistory;

pub use feedback::SelectivityFeedbackManager;

pub use histogram::RangeCondition;

pub use histogram::ValueHistogram;

pub use histogram::ValueHistogramBucket;

pub use manager::StatisticsManager;

pub use property::PropertyCombinationStats;

pub use property::PropertyStatistics;

pub use tag::TagStatistics;

pub use view::StatsView;

Modules

collector

Statistics collection module

edge

Border Type Statistics Module

feedback

Runtime statistics feedback module

histogram

ValueHistogram Statistics Module

manager

Statistical Information Manager Module

property

Attribute Statistics Information Module

tag

Tag statistics module

view

Per-query statistics accessor scoped to a single space.