+---------------+-------------+------+-----+---------+-------+
| Field         | Type        | Null | Key | Default | Extra |
+---------------+-------------+------+-----+---------+-------+
| hour          | int(2)      | NO   | PRI | NULL    |       |
| day           | date        | NO   | PRI | NULL    |       |
| system_id     | varchar(21) | NO   | PRI |         |       |
| submitted     | bigint(20)  | NO   |     | 0       |       |
| accepted      | bigint(20)  | NO   |     | 0       |       |
| rejected      | bigint(20)  | NO   |     | 0       |       |
| delivered     | bigint(20)  | NO   |     | 0       |       |
| undelivered   | bigint(20)  | NO   |     | 0       |       |
| expired       | bigint(20)  | NO   |     | 0       |       |
| creation_date | datetime    | NO   |     | NULL    |       |
| created_by    | varchar(20) | NO   |     |         |       |
+---------------+-------------+------+-----+---------+-------+
11 rows in set (0.00 sec)