Detect empty databases

[macbre]

mysql> select table_schema, count(*) as tables from information_schema.tables where table_type = 'BASE TABLE' group by table_schema;
+--------------------+--------+
| table_schema       | tables |
+--------------------+--------+
| index_digest       |     33 |
| mysql              |     31 |
| performance_schema |     87 |
| sys                |      1 |
+--------------------+--------+
4 rows in set (0,01 sec)

--check-empty-databases - pass this flag to enable empty_database check