单表 #
语法说明 #
SHOW DEFAULT SINGLE TABLE STORAGE UNIT [FROM databaseName]
SHOW SINGLE (TABLES | table) [FROM databaseName]
COUNT SINGLE_TABLE RULE [FROM databaseName]
table:
TABLE tableName
返回值说明 #
Single Table Storage Unit #
| 列 | 说明 |
|---|---|
| storage_unit_name | 存储单元名称 |
Single Table #
| 列 | 说明 |
|---|---|
| table_name | 单表名称 |
| resource_name | 单表所在的数据源名称 |
Single Table Rule Count #
| 列 | 说明 |
|---|---|
| rule_name | 规则名称 |
| database | 单表所在的数据库名称 |
| count | 规则个数 |
示例 #
SHOW DEFAULT SINGLE TABLE STORAGE UNIT
sql> SHOW DEFAULT SINGLE TABLE STORAGE UNIT;
+-------------------+
| storage_unit_name |
+-------------------+
| ds_0 |
+-------------------+
1 row in set (0.01 sec)
SHOW SINGLE TABLE tableName
sql> SHOW SINGLE TABLE t_single_0;
+----------------+---------------+
| table_name | resource_name |
+----------------+---------------+
| t_single_0 | ds_0 |
+----------------+---------------+
1 row in set (0.01 sec)
SHOW SINGLE TABLES
mysql> SHOW SINGLE TABLES;
+--------------+---------------+
| table_name | resource_name |
+--------------+---------------+
| t_single_0 | ds_0 |
| t_single_1 | ds_1 |
+--------------+---------------+
2 rows in set (0.02 sec)
COUNT SINGLE_TABLE RULE
mysql> COUNT SINGLE_TABLE RULE;
+--------------+----------+-------+
| rule_name | database | count |
+--------------+----------+-------+
| t_single_0 | ds | 2 |
+--------------+----------+-------+
1 row in set (0.02 sec)