Unable to insert into database despite specifying a default constraint on column - mysql

Question

I have the following table in MySQL database:
mysql> describe student;
+------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+-------+
| name | varchar(50) | YES | | NULL | |
| dob | date | YES | | NULL | |
| reg_no | varchar(20) | NO | PRI | NULL | |
| department | varchar(50) | YES | | NULL | |
| branch | varchar(50) | YES | | NULL | |
| semester | int(11) | YES | | 1 | |
+------------+-------------+------+-----+---------+-------+
6 rows in set (0.01 sec)
When I try to insert into this database without specifying the last value (i.e.semester), it results in an error
mysql> insert into student values('John Smith','1990-01-01','123ABC','Chemistry','Organic Chemistry');
ERROR 1136 (21S01): Column count doesn't match value count at row 1
Why is this not working? Isn't that the whole point of having a default constraint? That the value specified as default gets assigned if it isn't present in the insert query.
If I write the query like this, it works:
mysql> insert into student values('John Smith','1990-01-01','123ABC','Chemistry','Organic Chemistry',DEFAULT);
Query OK, 1 row affected (0.01 sec)
What is happening? Is my syntax wrong? I would like to be able to insert the record without having to specify 'DEFAULT'

Answer 1

If you are not adding values to all the table columns you should specify which columns you add data.
Example:
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
So in your case,
INSERT INTO student(name, dob, regno, department, branch)
VALUES ('John Smith','1990-01-01','123ABC','Chemistry','Organic Chemistry');

Answer 2

your syntax is wrong while inserting default values,so instead of that query use insert into student(name,dob,reg_no,department,branch)values('John Smith','1990-01-01','123ABCF','Chemistry','Organic Chemistry');