SHOW SHARDING BINDING TABLE RULE
语法用于查询指定逻辑库中指定分片表关联规则。
ShowShardingBindingTableRules::=
'SHOW' 'SHARDING' 'TABLE' 'REFERENCE' ('RULE' ruleName | 'RULES') ('FROM' databaseName)?
ruleName ::=
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 |
---|---|
name | 分片表关联规则名称 |
sharding_table_reference | 分片表关联关系 |
SHOW SHARDING TABLE REFERENCE RULES FROM sharding_db;
mysql> SHOW SHARDING TABLE REFERENCE RULES FROM sharding_db;
+-------+--------------------------+
| name | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b |
| ref_1 | t_c,t_d |
+-------+--------------------------+
2 rows in set (0.00 sec)
SHOW SHARDING TABLE REFERENCE RULES;
mysql> SHOW SHARDING TABLE REFERENCE RULES;
+-------+--------------------------+
| name | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b |
| ref_1 | t_c,t_d |
+-------+--------------------------+
2 rows in set (0.00 sec)
SHOW SHARDING TABLE REFERENCE RULE ref_0 FROM sharding_db;
mysql> SHOW SHARDING TABLE REFERENCE RULE ref_0 FROM sharding_db;
+-------+--------------------------+
| name | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b |
+-------+--------------------------+
1 row in set (0.00 sec)
SHOW SHARDING TABLE REFERENCE RULE ref_0;
mysql> SHOW SHARDING TABLE REFERENCE RULE ref_0;
+-------+--------------------------+
| name | sharding_table_reference |
+-------+--------------------------+
| ref_0 | t_a,t_b |
+-------+--------------------------+
1 row in set (0.00 sec)
SHOW
、SHARDING
、TABLE
、REFERENCE
、RULE
、RULES
、FROM