| set readwrite_splitting hint source = [auto / write] | 针对当前连接，设置读写分离的路由策略（自动路由或强制到写库） | set readwrite_splitting hint source = write | RAL |
| set sharding hint database_value = yy | 针对当前连接，设置 hint 仅对数据库分片有效，并添加分片值，yy：数据库分片值 | set sharding hint database_value = 100 | RAL |
| add sharding hint database_value xx = yy | 针对当前连接，为表 xx 添加分片值 yy，xx：逻辑表名称，yy：数据库分片值 | add sharding hint database_value t_order= 100 | RAL |
| add sharding hint table_value xx = yy | 针对当前连接，为表 xx 添加分片值 yy，xx：逻辑表名称，yy：表分片值 | add sharding hint table_value t_order = 100 | RAL |
| clear hint | 针对当前连接，清除 hint 所有设置 | clear hint | RAL |
| clear [sharding hint / readwrite_splitting hint] | 针对当前连接，清除 sharding 或 readwrite_splitting 的 hint 设置 | clear readwrite_splitting hint | RAL |
| show [sharding / readwrite_splitting] hint status | 针对当前连接，查询 sharding 或 readwrite_splitting 的 hint 设置 | show readwrite_splitting hint status | RAL |