Module rules 

Rules-based SQL reduction system.

This module defines reduction rules and operations for different AST node types, providing configurable reduction behavior for comprehensive SQL simplification.

Structs

ReductionCandidate

A reduction candidate: a path to a node and the operation to apply.

ReductionRule

Defines what actions can be performed on an AST node during reduction.

ReductionRules

Repository of reduction rules for different AST node types. Configures how different SQL constructs should be reduced.

Enums

ReductionOperation

Different types of reduction operations that can be applied.

Functions

apply_reduction_operation

Apply a reduction operation to an AST node. Returns the new AST root if the operation was successful.

generate_reduction_candidates

Generate all possible reduction candidates for a given AST. Systematically creates all viable reduction operations.