SHOW SHARDING KEY GENERATOR
Description
SHOW SHARDING KEY GENERATOR syntax is used to query sharding key generators in specified database.
Syntax
ShowShardingKeyGenerators::=
'SHOW' 'SHARDING' 'KEY' ('GENERATOR' keyGeneratorName | 'GENERATORS') ('FROM' databaseName)?
keyGeneratorName ::=
identifier
databaseName ::=
identifierSupplement
- When databaseName is not specified, the default is the currently used DATABASE. If DATABASE is not used, No database selected will be prompted.
- Use
SHOW SHARDING KEY GENERATORSto query all sharding key generators. - Use
SHOW SHARDING KEY GENERATOR keyGeneratorNameto query the specified sharding key generator.
Return value description
| column | Description |
|---|---|
| name | Sharding key generator name |
| type | Sharding key generator type |
| props | Sharding key generator properties |
Example
- Query the sharding key generators of the specified logical database
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)- Query the sharding key generators of the current logical database
SHOW SHARDING KEY GENERATORS;mysql> SHOW SHARDING KEY GENERATORS;
+-------------------------+-----------+-------+
| name | type | props |
+-------------------------+-----------+-------+
| snowflake_key_generator | snowflake | |
+-------------------------+-----------+-------+
1 row in set (0.00 sec)- Query the specified sharding key generator
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)Reserved word
SHOW, SHARDING, KEY, GENERATOR, GENERATORS, FROM