create database illegal-database;

Error: 1001(Unsupported), SQL statement is not supported: create database illegal-database;, keyword: -

create database 'illegal-database';

Affected Rows: 1

show databases;

+--------------------+
| Schemas            |
+--------------------+
| illegal-database   |
| information_schema |
| public             |
| test_public_schema |
+--------------------+