How MySQL stored GENERATED COLUMNS can work with built-in functions?

It can be illustrated with the help of an example in which we are creating a stored generated column in the table named ‘employee_data_stored’. As we know that stored generated column can be generated by using the keyword ‘stored’.

Example

mysql> Create table employee_data_stored(ID INT AUTO_INCREMENT PRIMARY KEY, First_name VARCHAR(50) NOT NULL, Last_name VARCHAR(50) NOT NULL, FULL_NAME VARCHAR(90) GENERATED ALWAYS AS(CONCAT(First_name,' ',Last_name)) STORED); Query OK, 0 rows affected (0.52 sec) mysql> DESCRIBE employee_data_stored; +------------+-------------+------+-----+---------+------------------+ | Field      | Type        | Null | Key | Default | Extra            | +------------+-------------+------+-----+---------+------------------+ | ID         | int(11)     | NO   | PRI | NULL    | auto_increment   | | First_name | varchar(50) | NO   |     | NULL    |                  | | Last_name  | varchar(50) | NO   |     | NULL    |                  | | FULL_NAME  | varchar(90) | YES  |     | NULL    | STORED GENERATED | +------------+-------------+------+-----+---------+------------------+ 4 rows in set (0.00 sec) mysql> INSERT INTO employee_data_stored(first_name, Last_name) values('Gaurav','Kumar'); Query OK, 1 row affected (0.04 sec) mysql> INSERT INTO employee_data_stored(first_name, Last_name) values('Raman','Singh'); Query OK, 1 row affected (0.09 sec) mysql> Select * from employee_data_stored; +----+------------+-----------+--------------+ | ID | First_name | Last_name | FULL_NAME    | +----+------------+-----------+--------------+ | 1  | Gaurav     | Kumar     | Gaurav Kumar | | 2  | Raman      | Singh     | Raman Singh  | +----+------------+-----------+--------------+ 2 rows in set (0.00 sec)