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Update mysql-schema.md
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hfxsd committed Sep 30, 2024
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Expand Up @@ -87,7 +87,7 @@ aliases: ['/docs-cn/dev/system-tables/system-table-overview/','/docs-cn/dev/refe
## DDL 相关系统表

* `tidb_ddl_history` 记录了 DDL 语句的历史记录
* `tidb_ddl_jobs` TiDB 内部存放的正在执行的 DDL 的元数据,用于执行 DDL
* `tidb_ddl_job` TiDB 内部存放的正在执行的 DDL 的元数据,用于执行 DDL
* `tidb_ddl_reorg` TiDB 内部存放的正在执行的物理 DDL(例如加索引)的元数据,用于执行物理 DDL

## 分布式执行框架相关系统表
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