riaDB [mbakraa]> SHOW COLUMNS FROM tbl_comment;
+---------------------+--------------+------+-----+-------------------+----------------+
| Field               | Type         | Null | Key | Default           | Extra          |
+---------------------+--------------+------+-----+-------------------+----------------+
| comment_id          | int(11)      | NO   | PRI | NULL              | auto_increment |
| parent_comment_id   | int(11)      | NO   |     | NULL              |                |
| comment             | varchar(200) | NO   |     | NULL              |                |
| comment_sender_name | varchar(40)  | NO   |     | NULL              |                |
| date                | timestamp    | NO   |     | CURRENT_TIMESTAMP |                |
+---------------------+--------------+------+-----+-------------------+----------------+
5 rows in set (0.00 sec)


MariaDB [mbakraa]> SELECT * FROM tbl_comment;
+------------+-------------------+---------------------+---------------------+---------------------+
| comment_id | parent_comment_id | comment             | comment_sender_name | date                |
+------------+-------------------+---------------------+---------------------+---------------------+
|          1 |                 0 | Very good site!.    | Mohammed            | 2018-05-10 19:26:34 |
|          2 |                 1 | asd                 | sa                  | 2018-05-10 19:37:55 |
|          3 |                 0 | s                   | a                   | 2018-05-10 19:38:02 |
|          4 |                 1 | asd                 | asd                 | 2018-05-10 19:38:17 |
|          5 |                 2 | asd                 | asd                 | 2018-05-10 19:38:25 |
|          6 |                 0 | Hi guys. Great job! | Jhon Quail          | 2018-05-10 19:40:42 |
+------------+-------------------+---------------------+---------------------+---------------------+
6 rows in set (0.00 sec)