How can I create a stored procedure to delete values from a MySQL table?

We can create a stored procedure with IN operator to delete values from a MySQL table. To make it understand we are taking an example of a table named ‘student_info’ having the following data −

mysql> Select * from student_info; +------+---------+------------+------------+ | id   | Name    | Address    | Subject    | +------+---------+------------+------------+ | 100  | Aarav   | Delhi      | Computers  | | 101  | YashPal | Amritsar   | History    | | 105  | Gaurav  | Jaipur     | Literature | | 110  | Rahul   | Chandigarh | History    | +------+---------+------------+------------+ 4 rows in set (0.00 sec)

Now, by creating the procedure named ‘delete_studentinfo’ as follow, we can delete the values from ‘student_info’ table −

mysql> DELIMITER // ; mysql> Create Procedure Delete_studentinfo ( IN p_id INT)     -> BEGIN     -> DELETE FROM student_info     -> WHERE ID=p_id;     -> END // Query OK, 0 rows affected (0.11 sec) mysql> DELIMITER ; //

Now, invoke the procedure with the values we want to delete from the table as follows −

mysql> CALL Delete_studentinfo(100); Query OK, 1 row affected (1.09 sec) mysql> Select * from student_info; +------+---------+------------+------------+ | id   | Name    | Address    | Subject    | +------+---------+------------+------------+ | 101  | YashPal | Amritsar   | History    | | 105  | Gaurav  | Jaipur     | Literature | | 110  | Rahul   | Chandigarh | History    | | 125  | Raman   | Bangalore  | Computers  | +------+---------+------------+------------+ 4 rows in set (0.01 sec)

The above result set shows that the record having id = 100 deleted from the table.