MySQL - размер БД

Узнать размер БД средствами MySQL:

MariaDB [(none)]> SELECT table_schema "database_name", sum( data_length + index_length )/1048576 "Database size in MB" FROM information_schema. TABLES GROUP BY table_schema;
+--------------------+---------------------+
| database_name      | Database size in MB |
+--------------------+---------------------+
| information_schema |              0.1250 |
| mail               |              0.1250 |
| mysql              |              0.6053 |
| openfire           |              0.2624 |
| sveta              |              0.0031 |
+--------------------+---------------------+
5 rows in set (0.24 sec)