show tables;
+------------------------+
| Tables_in_volkszaehler |
+------------------------+
| aggregate |
| daily |
| data |
+------------------------+
MariaDB [volkszaehler]> describe aggregate;
+------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| channel_id | int(11) | YES | MUL | NULL | |
| type | smallint(6) | NO | | NULL | |
| timestamp | bigint(20) | NO | | NULL | |
| value | double | NO | | NULL | |
| count | int(11) | NO | | NULL | |
+------------+-------------+------+-----+---------+----------------+
MariaDB [volkszaehler]> describe daily;
+-----------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------+--------------+------+-----+---------+-------+
| from_date | varchar(29) | YES | | NULL | |
| id | int(11) | NO | | 0 | |
| diff | varchar(62) | YES | | NULL | |
| type | varchar(255) | NO | | NULL | |
| value | longtext | NO | | NULL | |
+-----------+--------------+------+-----+---------+-------+
MariaDB [volkszaehler]> describe data;
+------------+------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| channel_id | int(11) | YES | MUL | NULL | |
| timestamp | bigint(20) | NO | MUL | NULL | |
| value | double | NO | | NULL | |
+------------+------------+------+-----+---------+----------------+