SHOW SHARDING TABLE RULES USED KEY GENERATOR 语法用于查询指定逻辑库中使用指定分片主键生成器的分片规则。
ShowShardingTableRulesUsedKeyGenerator::=
'SHOW' 'SHARDING' 'TABLE' 'RULES' 'USED' 'KEY' 'GENERATOR' keyGeneratorName ('FROM' databaseName)?
keyGeneratorName ::=
identifier
databaseName ::=
identifier
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。| 列 | 说明 |
|---|---|
| type | 分片规则类型 |
| name | 分片规则名称 |
SHOW SHARDING TABLE RULES USED KEY GENERATOR snowflake_key_generator FROM sharding_db;
mysql> SHOW SHARDING TABLE RULES USED KEY GENERATOR snowflake_key_generator FROM sharding_db;
+-------+--------------+
| type | name |
+-------+--------------+
| table | t_order_item |
+-------+--------------+
1 row in set (0.00 sec)
SHOW SHARDING TABLE RULES USED KEY GENERATOR snowflake_key_generator;
mysql> SHOW SHARDING TABLE RULES USED KEY GENERATOR snowflake_key_generator;
+-------+--------------+
| type | name |
+-------+--------------+
| table | t_order_item |
+-------+--------------+
1 row in set (0.01 sec)
SHOW、SHARDING、TABLE、USED、KEY、GENERATOR、FROM