MySQL edit and update records including employee salary


The UPDATE command is used in MySQL to update records. With it, the SET command is used to set new values. Let us first create a table −

mysql> create table DemoTable
(
   EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   EmployeeName varchar(50),
   EmployeeSalary int
);
Query OK, 0 rows affected (0.57 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Chris',56780);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Robert',45670);
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('Mike',87654);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable(EmployeeName,EmployeeSalary) values('David',34569);
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+------------+--------------+----------------+
| EmployeeId | EmployeeName | EmployeeSalary |
+------------+--------------+----------------+
|          1 | Chris        |          56780 |
|          2 | Robert       |          45670 |
|          3 | Mike         |          87654 |
|          4 | David        |          34569 |
+------------+--------------+----------------+
4 rows in set (0.00 sec)

Following is the query to update records and set new values −

mysql> update DemoTable
   set EmployeeSalary=EmployeeSalary+12346;
Query OK, 4 rows affected (0.14 sec)
Rows matched: 4 Changed: 4 Warnings: 0

Let us check the table records −

mysql> select *from DemoTable;

This will produce the following output −

+------------+--------------+----------------+
| EmployeeId | EmployeeName | EmployeeSalary |
+------------+--------------+----------------+
|          1 | Chris        | 69126          |
|          2 | Robert       | 58016          |
|          3 | Mike         | 100000         |
|          4 | David        | 46915          |
+------------+--------------+----------------+
4 rows in set (0.00 sec)

Updated on: 04-Oct-2019

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