对sql解析结果，进行revert，生成反向sql，以及undo日志

描述

贡献者指南

技术栈

javasql

领域

backenddatabase

议题类型

feature

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

3-5 days

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

needs investigation

前置要求

Basic SQL understandingJavaDistributed transaction concepts

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

30

研究方向

Examine the current SQL parsing logic in the repository, particularly how undo logs are generated and used during rollback. Look at the transaction manager's rollback mechanism. Identify the classes responsible for parsing SQL and generating reverse SQL. The issue requires implementing a revert function that produces the opposite SQL statement and corresponding undo log entries. Start by understanding the existing undo log structure and how it is persisted.