Strange MySQL behavior

I have 5.7 mysql server installed from Ubuntu 16.04 repos. I executed two queries:

Code:

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| jiradb             |
| mysql              |
| performance_schema |
| phpmyadmin         |
| svnadmin           |
| sys                |
+--------------------+
7 rows in set (0.00 sec)

and

Code:

mysql> SELECT table_schema AS "Database",  ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)"  FROM information_schema.TABLES  GROUP BY table_schema;
+--------------------+-----------+
| Database           | Size (MB) |
+--------------------+-----------+
| information_schema |      0.16 |
| mysql              |      2.48 |
| performance_schema |      0.00 |
| phpmyadmin         |      0.39 |
| svnadmin           |      0.78 |
| sys                |      0.02 |
+--------------------+-----------+
6 rows in set (0.03 sec)

As you can see the result of second query there is no "jiradb" database. It's strange. Anybody knows why it does not exist in second result? jiradb is newly created database.

 

Thank you till. I will check it.