The COUNT SINGLE TABLE syntax is used to query the number of single tables for specified database.
CountSingleTable::=
'COUNT' 'SINGLE' 'TABLE' ('FROM' databaseName)?
databaseName ::=
identifier
databaseName is not specified, the default is the currently used DATABASE. If DATABASE is not used, No database selected will be prompted.| Column | Description |
|---|---|
| rule_name | Single rule name |
| database | The database name where the single table is located |
| count | The count of single table |
COUNT SINGLE TABLE FROM sharding_db;
mysql> COUNT SINGLE TABLE FROM sharding_db;
+-----------+-------------+-------+
| rule_name | database | count |
+-----------+-------------+-------+
| single | sharding_db | 2 |
+-----------+-------------+-------+
1 row in set (0.02 sec)
COUNT, SINGLE, TABLE, FROM