Module bridge 

SQL Execution Bridge

Unified SQL execution pipeline that routes all SQL through a single AST.

Architecture

┌─────────────┐     ┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│   SQL Text  │ --> │   Lexer     │ --> │   Parser    │ --> │    AST      │
└─────────────┘     └─────────────┘     └─────────────┘     └─────────────┘
                                                                   │
                    ┌──────────────────────────────────────────────┘
                    │
                    v
┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│  Executor   │ <-- │  Planner    │ <-- │  Validator  │
└─────────────┘     └─────────────┘     └─────────────┘
      │
      v
┌─────────────┐
│   Result    │
└─────────────┘

Benefits

1. Single parser: All SQL goes through one lexer/parser
2. Type-safe AST: Structured representation of all queries
3. Dialect normalization: MySQL/PostgreSQL/SQLite → canonical AST
4. Extensible: Add new features by extending AST, not string parsing

Structs

SqlBridge

Unified SQL executor that routes through AST

Enums

ExecutionResult

Execution result types

Traits

SqlConnection

Storage connection trait for executing SQL against actual storage