和规则的创建、修改和删除； • RQL（Resource & Rule Query Language）负责资源和规 则的查询和展现； • RAL（Resource & Rule Administration Language）负责 Hint、事务类型切换、分片执行计划查询等增量功能的操作。 D i s t S Q L D i s t S Q L D i s t S Q L D i

Rule Query Language, is responsible for the query of resources and rules. RAL Resource & Rule Administration Language, is responsible for hint, circuit breaker, configuration import and export, scaling ---- --------+----------------+ 2 rows in set (0.01 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for hint, circuit breaker, configuration import and export, scaling control ---- ---+---------------------+ 1 rows in set (0.12 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling,

Rule Query Language, is responsible for the query of resources and rules. RAL Resource & Rule Administration Language, is responsible for hint, circuit breaker, configuration import and export, scaling ---- --------+----------------+ 2 rows in set (0.01 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for hint, circuit breaker, configuration import and export, scaling control SHARDING, ALGORITHMS, FROM Related links • Reserved word RAL Syntax RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling,

Rule Query Language) responsible for the query of resources and rules; • RAL (Resource & Rule Administration Language) responsible for the added‐on administrator fea‐ ture of hint, transaction type switch ---- --------+----------------+ 2 rows in set (0.01 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling, ---- ---+---------------------+ 1 rows in set (0.12 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling,

HTTP, file, big data – Focus business SDK, can work with Spring IOC • Admin Console – Job administration – Job event trace query – Registry center management 3 3 Environment Required 3.1 Java

Language，负责资源和规则的创建、修改和删除。 RQL Resource & Rule Query Language，负责资源和规则的查询和展现。 RAL Resource & Rule Administration Language，负责强制路由、熔断、配置导入导出、数据迁移控制等管理 功能。 RUL Resource & Rule Utility Language，负责 SQL 解析、SQL -------- --------+----------------+ 2 rows in set (0.01 sec) RAL 语法 RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管理语言，负责强制路 由、熔断、配置导入导出、数据迁移控制等管理功能。 4.2. ShardingSphere-Proxy -------- ---+---------------------+ 1 rows in set (0.12 sec) RAL 语法 RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管理语言，负责强制路 由、事务类型切换、弹性伸缩、分片执行计划查询等增量功能的操作。 保留字 资源定义 A

Language）负责资源和规则的创建、修改和删除； • RQL（Resource & Rule Query Language）负责资源和规则的查询和展现； • RAL（Resource & Rule Administration Language）负责 Hint、事务类型切换、分片执行计划查询 等管理功能。 3.3. DistSQL 14 Apache ShardingSphere document, v5 -------- --------+----------------+ 2 rows in set (0.01 sec) RAL 语法 RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管理语言，负责强制路 由、事务类型切换、弹性伸缩、分片执行计划查询等增量功能的操作。 强制路由 语句 说明 示例 document, v5.1.2 ---+---------------------+ 1 rows in set (0.12 sec) RAL 语法 RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管理语言，负责强制路 由、事务类型切换、弹性伸缩、分片执行计划查询等增量功能的操作。 保留字 资源定义 ADD

Rule Query Language) responsible for the query of resources and rules; • RAL (Resource & Rule Administration Language) responsible for the added‐on administrator fea‐ ture of hint, transaction type switch use method of RAL in combina‐ tion with use practices. RAL Definition RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling,

Rule Query Language) responsible for the query of resources and rules; • RAL (Resource & Rule Administration Language) responsible for the added‐on administrator fea‐ ture of hint, transaction type switch ---- --------+----------------+ 2 rows in set (0.01 sec) RAL Syntax RAL (Resource & Rule Administration Language) responsible for the added‐on feature of hint, transac‐ tion type switch, scaling,

Language）负责资源和规则的创建、修改和删除； • RQL（Resource & Rule Query Language）负责资源和规则的查询和展现； • RAL（Resource & Rule Administration Language）负责 Hint、事务类型切换、分片执行计划查询 等管理功能。 3.3.3 目标 打破中间件和数据库之间的界限，让开发者像使用数据库一样使用 Apache ShardingSphere，是 set (0.02 sec) RAL 语法 本章节将对 RAL 的语法进行详细说明，并以实际的列子介绍 RAL 的使用。 RAL 定义 RAL (Resource & Rule Administration Language) 为 Apache ShardingSphere 的管理语言，负责强制路 由、事务类型切换、弹性伸缩、分片执行计划查询等增量功能的操作。 5.2. ShardingSphere-Proxy