SHOW SHADOW RULE

语法

• 未指定 databaseName 时，默认是当前使用的 DATABASE。 如果也未使用 DATABASE 则会提示 No database selected。

返回值说明

• 查询指定逻辑库中的指定影子规则

SHOW SHADOW RULE shadow_rule FROM shadow_db;

mysql> SHOW SHADOW RULE shadow_rule FROM shadow_db;
| rule_name   | source_name | shadow_name | shadow_table         |
+-------------+-------------+-------------+----------------------+
| shadow_rule | ds_0        | ds_1        | t_order_item,t_order |
1 row in set (0.00 sec)

• 查询当前逻辑库中的指定影子规则

mysql> SHOW SHADOW RULE shadow_rule;
+-------------+-------------+-------------+----------------------+
| rule_name   | source_name | shadow_name | shadow_table         |
+-------------+-------------+-------------+----------------------+
| shadow_rule | ds_0        | ds_1        | t_order_item,t_order |
1 row in set (0.01 sec)

• 查询指定逻辑库中的影子规则

SHOW SHADOW RULES FROM shadow_db;

• 查询当前逻辑库中的影子规则

SHOW SHADOW RULES;

+-------------+-------------+-------------+----------------------+
| rule_name   | source_name | shadow_name | shadow_table         |
+-------------+-------------+-------------+----------------------+
| shadow_rule | ds_0        | ds_1        | t_order_item,t_order |
+-------------+-------------+-------------+----------------------+

保留字