Module statistics 

Statistics collection for cost-based query optimization.

This module provides statistics about:

• Tables/Labels: cardinality, size
• Columns/Properties: distinct values, min/max, null fraction, histograms
• Relationships: edge type statistics, degree distributions
• RDF: triple patterns, predicates, join selectivity

Structs

ColumnStatistics

Statistics for a column/property.

EdgeTypeStatistics

Statistics for an edge type.

Histogram

An equi-depth histogram.

HistogramBucket

An equi-depth histogram bucket.

IndexStatistics

Statistics about index access patterns for cost estimation.

LabelStatistics

Statistics for a single label (node type).

PredicateStatistics

Statistics for a specific predicate (property).

RdfStatistics

Statistics for an RDF triple store.

RdfStatisticsCollector

Collector for building RDF statistics from a triple store.

Statistics

Statistics for the entire database.

Enums

TriplePosition

Position in a triple pattern.

Type Aliases

PropertyKey

A property key identifier.

TableStatistics

Alias for table statistics (used in relational contexts).