Module operators 

Physical operators for query execution.

This module provides the physical operators that form the execution tree:

• Scan: Read nodes/edges from storage
• Filter: Apply predicates to filter rows
• Project: Select and transform columns
• Join: Hash join and nested loop join
• Aggregate: Group by and aggregation functions

Structs

FilterOperator

A filter operator that applies a predicate to filter rows.

ProjectOperator

A project operator that selects and transforms columns.

ScanOperator

A scan operator that reads nodes from storage.

Enums

OperatorError

Error during operator execution.

Traits

Operator

Trait for physical operators.

Type Aliases

OperatorResult

Result of executing an operator.