SHOW SHARDING KEY GENERATOR 语法用于查询指定逻辑库的分布式主键生成器。
ShowShardingKeyGenerators::=
'SHOW' 'SHARDING' 'KEY' ('GENERATOR' keyGeneratorName | 'GENERATORS') ('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。SHOW SHARDING KEY GENERATORS 查询全部分布式主键生成器；SHOW SHARDING KEY GENERATOR keyGeneratorName 查询指定名称的分布式主键生成器。| 列 | 说明 |
|---|---|
| name | 分布式主键生成器名称 |
| type | 分布式主键生成器类型 |
| props | 分布式主键生成器参数 |
SHOW SHARDING KEY GENERATORS FROM sharding_db;
mysql> SHOW SHARDING KEY GENERATORS FROM sharding_db;
+-------------------------+-----------+-------+
| name | type | props |
+-------------------------+-----------+-------+
| snowflake_key_generator | snowflake | |
+-------------------------+-----------+-------+
1 row in set (0.00 sec)
SHOW SHARDING KEY GENERATORS;
mysql> SHOW SHARDING KEY GENERATORS;
+-------------------------+-----------+-------+
| name | type | props |
+-------------------------+-----------+-------+
| snowflake_key_generator | snowflake | |
+-------------------------+-----------+-------+
1 row in set (0.00 sec)
SHOW SHARDING KEY GENERATOR snowflake_key_generator;
mysql> SHOW SHARDING KEY GENERATOR snowflake_key_generator;
+-------------------------+-----------+-------+
| name | type | props |
+-------------------------+-----------+-------+
| snowflake_key_generator | snowflake | |
+-------------------------+-----------+-------+
1 row in set (0.00 sec)
SHOW、SHARDING、KEY、GENERATOR、GENERATORS、FROM